./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/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_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/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_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/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 25a137cac87a0e16e274f725e7bbd21e6c99dd9079b93c306fff086ae4fee1e1 --- 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 19:55:56,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:55:56,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:55:56,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:55:56,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:55:56,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:55:56,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:55:56,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:55:56,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:55:56,482 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:55:56,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:55:56,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:55:56,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:55:56,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:55:56,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:55:56,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:55:56,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:55:56,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:55:56,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:55:56,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:55:56,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:55:56,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:55:56,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:55:56,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:55:56,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:55:56,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:55:56,522 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:55:56,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:55:56,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:55:56,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:55:56,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:55:56,530 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:55:56,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:55:56,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:55:56,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:55:56,541 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:55:56,542 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:55:56,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:55:56,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:55:56,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:55:56,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:55:56,548 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 19:55:56,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:55:56,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:55:56,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:55:56,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:55:56,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:55:56,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:55:56,598 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:55:56,599 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:55:56,599 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:55:56,599 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:55:56,601 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:55:56,601 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:55:56,601 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:55:56,601 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:55:56,602 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:55:56,602 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:55:56,602 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:55:56,603 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:55:56,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:55:56,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:55:56,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:55:56,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:55:56,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:55:56,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:55:56,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:55:56,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:55:56,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:55:56,612 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:55:56,614 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:55:56,615 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:55:56,615 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:55:56,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:55:56,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:55:56,616 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:55:56,616 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:55:56,617 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:55:56,617 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:55:56,617 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:55:56,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:55:56,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:55:56,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:55:56,618 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_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 25a137cac87a0e16e274f725e7bbd21e6c99dd9079b93c306fff086ae4fee1e1 [2022-11-20 19:55:56,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:55:56,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:55:56,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:55:56,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:55:56,985 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:55:56,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec1_product28.cil.c [2022-11-20 19:56:00,288 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:56:00,642 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:56:00,642 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c [2022-11-20 19:56:00,679 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/data/e51093fae/a44cc470e6194bdd89521116e3f5b853/FLAGf52c5ffe5 [2022-11-20 19:56:00,696 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/data/e51093fae/a44cc470e6194bdd89521116e3f5b853 [2022-11-20 19:56:00,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:56:00,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:56:00,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:56:00,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:56:00,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:56:00,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:56:00" (1/1) ... [2022-11-20 19:56:00,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7304690a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:00, skipping insertion in model container [2022-11-20 19:56:00,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:56:00" (1/1) ... [2022-11-20 19:56:00,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:56:00,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:56:01,382 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_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c[51091,51104] [2022-11-20 19:56:01,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:56:01,454 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:56:01,559 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_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/sv-benchmarks/c/product-lines/email_spec1_product28.cil.c[51091,51104] [2022-11-20 19:56:01,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:56:01,609 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:56:01,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01 WrapperNode [2022-11-20 19:56:01,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:56:01,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:56:01,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:56:01,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:56:01,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,798 INFO L138 Inliner]: procedures = 128, calls = 208, calls flagged for inlining = 55, calls inlined = 45, statements flattened = 854 [2022-11-20 19:56:01,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:56:01,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:56:01,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:56:01,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:56:01,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,853 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:56:01,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:56:01,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:56:01,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:56:01,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (1/1) ... [2022-11-20 19:56:01,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:56:01,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:56:01,918 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:56:01,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:56:01,959 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 19:56:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 19:56:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 19:56:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 19:56:01,960 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 19:56:01,960 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 19:56:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 19:56:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 19:56:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 19:56:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 19:56:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 19:56:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 19:56:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 19:56:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 19:56:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 19:56:01,962 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 19:56:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 19:56:01,963 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 19:56:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 19:56:01,963 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 19:56:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 19:56:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 19:56:01,964 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 19:56:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 19:56:01,964 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 19:56:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:56:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 19:56:01,964 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 19:56:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 19:56:01,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 19:56:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 19:56:01,965 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 19:56:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 19:56:01,966 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 19:56:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 19:56:01,966 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 19:56:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 19:56:01,966 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 19:56:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 19:56:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 19:56:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 19:56:01,967 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 19:56:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 19:56:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 19:56:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:56:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 19:56:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 19:56:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:56:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:56:02,193 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:56:02,196 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:56:03,299 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:56:03,910 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:56:03,911 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:56:03,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:03 BoogieIcfgContainer [2022-11-20 19:56:03,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:56:03,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:56:03,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:56:03,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:56:03,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:56:00" (1/3) ... [2022-11-20 19:56:03,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdb04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:56:03, skipping insertion in model container [2022-11-20 19:56:03,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:56:01" (2/3) ... [2022-11-20 19:56:03,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdb04a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:56:03, skipping insertion in model container [2022-11-20 19:56:03,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:56:03" (3/3) ... [2022-11-20 19:56:03,938 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product28.cil.c [2022-11-20 19:56:03,963 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:56:03,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:56:04,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:56:04,063 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;@641044aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:56:04,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:56:04,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 19:56:04,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 19:56:04,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:04,095 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:04,096 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:04,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash -366416056, now seen corresponding path program 1 times [2022-11-20 19:56:04,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:04,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218981987] [2022-11-20 19:56:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:04,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:04,551 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 19:56:04,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:04,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218981987] [2022-11-20 19:56:04,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218981987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:56:04,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:56:04,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:56:04,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604108767] [2022-11-20 19:56:04,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:56:04,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 19:56:04,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:56:04,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 19:56:04,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:56:04,595 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 19:56:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:56:04,780 INFO L93 Difference]: Finished difference Result 277 states and 362 transitions. [2022-11-20 19:56:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 19:56:04,783 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-20 19:56:04,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:56:04,800 INFO L225 Difference]: With dead ends: 277 [2022-11-20 19:56:04,801 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 19:56:04,811 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 19:56:04,818 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:56:04,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 209 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:56:04,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 19:56:04,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-20 19:56:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 107 states have internal predecessors, (136), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-20 19:56:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2022-11-20 19:56:04,924 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 61 [2022-11-20 19:56:04,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:56:04,927 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2022-11-20 19:56:04,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 19:56:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2022-11-20 19:56:04,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 19:56:04,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:04,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:04,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:56:04,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:04,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1966702880, now seen corresponding path program 1 times [2022-11-20 19:56:04,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:04,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646999747] [2022-11-20 19:56:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:04,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:05,360 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 19:56:05,361 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:05,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646999747] [2022-11-20 19:56:05,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646999747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:56:05,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:56:05,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:56:05,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096015929] [2022-11-20 19:56:05,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:56:05,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:56:05,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:56:05,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:56:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:56:05,367 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 19:56:05,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:56:05,523 INFO L93 Difference]: Finished difference Result 273 states and 350 transitions. [2022-11-20 19:56:05,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:56:05,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2022-11-20 19:56:05,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:56:05,527 INFO L225 Difference]: With dead ends: 273 [2022-11-20 19:56:05,527 INFO L226 Difference]: Without dead ends: 179 [2022-11-20 19:56:05,528 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 19:56:05,530 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:56:05,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 411 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:56:05,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-20 19:56:05,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-20 19:56:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-20 19:56:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-11-20 19:56:05,551 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 62 [2022-11-20 19:56:05,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:56:05,552 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-11-20 19:56:05,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 19:56:05,553 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-11-20 19:56:05,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 19:56:05,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:05,556 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:05,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:56:05,557 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:05,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:05,557 INFO L85 PathProgramCache]: Analyzing trace with hash -219073548, now seen corresponding path program 1 times [2022-11-20 19:56:05,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:05,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479358799] [2022-11-20 19:56:05,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:05,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:05,672 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 19:56:05,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:05,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479358799] [2022-11-20 19:56:05,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479358799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:56:05,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:56:05,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:56:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837721233] [2022-11-20 19:56:05,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:56:05,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:56:05,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:56:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:56:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:56:05,676 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 19:56:05,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:56:05,791 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2022-11-20 19:56:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:56:05,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-20 19:56:05,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:56:05,795 INFO L225 Difference]: With dead ends: 388 [2022-11-20 19:56:05,795 INFO L226 Difference]: Without dead ends: 227 [2022-11-20 19:56:05,797 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 19:56:05,798 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 57 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:56:05,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 419 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:56:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-20 19:56:05,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2022-11-20 19:56:05,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 141 states have internal predecessors, (191), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-20 19:56:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2022-11-20 19:56:05,826 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 67 [2022-11-20 19:56:05,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:56:05,826 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2022-11-20 19:56:05,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 19:56:05,827 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2022-11-20 19:56:05,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 19:56:05,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:56:05,829 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:56:05,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 19:56:05,829 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:56:05,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:56:05,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1057679852, now seen corresponding path program 1 times [2022-11-20 19:56:05,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:56:05,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747839885] [2022-11-20 19:56:05,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:05,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:56:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:06,034 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 19:56:06,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:56:06,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747839885] [2022-11-20 19:56:06,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747839885] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:56:06,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625313612] [2022-11-20 19:56:06,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:56:06,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:56:06,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:56:06,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:56:06,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 19:56:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:56:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:56:06,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:56:06,520 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 19:56:06,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:56:06,629 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 19:56:06,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625313612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:56:06,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1582943590] [2022-11-20 19:56:06,658 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-11-20 19:56:06,658 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:56:06,667 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:56:06,678 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:56:06,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:56:41,397 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-20 19:56:41,770 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 19:56:42,263 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:57:24,267 WARN L233 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 496 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:57:31,040 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 508 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:57:41,597 WARN L233 SmtUtils]: Spent 9.13s on a formula simplification. DAG size of input: 518 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:58:05,655 WARN L233 SmtUtils]: Spent 23.70s on a formula simplification. DAG size of input: 585 DAG size of output: 457 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:58:16,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1582943590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:16,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 19:58:16,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-20 19:58:16,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597136451] [2022-11-20 19:58:16,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:16,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 19:58:16,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:16,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 19:58:16,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2022-11-20 19:58:16,009 INFO L87 Difference]: Start difference. First operand 222 states and 312 transitions. Second operand has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 19:58:30,102 WARN L233 SmtUtils]: Spent 11.94s on a formula simplification. DAG size of input: 583 DAG size of output: 429 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:58:37,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:37,699 INFO L93 Difference]: Finished difference Result 524 states and 786 transitions. [2022-11-20 19:58:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 19:58:37,700 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 68 [2022-11-20 19:58:37,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:37,703 INFO L225 Difference]: With dead ends: 524 [2022-11-20 19:58:37,703 INFO L226 Difference]: Without dead ends: 320 [2022-11-20 19:58:37,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 105.9s TimeCoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2022-11-20 19:58:37,705 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 146 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 1794 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:37,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 2972 Invalid, 1806 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 1794 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-20 19:58:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-11-20 19:58:37,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 245. [2022-11-20 19:58:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.4) internal successors, (224), 163 states have internal predecessors, (224), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-20 19:58:37,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 345 transitions. [2022-11-20 19:58:37,884 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 345 transitions. Word has length 68 [2022-11-20 19:58:37,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:37,884 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 345 transitions. [2022-11-20 19:58:37,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.25) internal successors, (36), 15 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 19:58:37,885 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 345 transitions. [2022-11-20 19:58:37,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 19:58:37,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:37,887 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:58:37,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:58:38,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:58:38,095 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:58:38,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2050418478, now seen corresponding path program 1 times [2022-11-20 19:58:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:38,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550313481] [2022-11-20 19:58:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:38,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:38,229 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 19:58:38,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:38,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550313481] [2022-11-20 19:58:38,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550313481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:58:38,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:58:38,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 19:58:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828002494] [2022-11-20 19:58:38,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:58:38,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:58:38,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:58:38,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:58:38,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:58:38,232 INFO L87 Difference]: Start difference. First operand 245 states and 345 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 19:58:38,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:58:38,557 INFO L93 Difference]: Finished difference Result 583 states and 854 transitions. [2022-11-20 19:58:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:58:38,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2022-11-20 19:58:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:58:38,560 INFO L225 Difference]: With dead ends: 583 [2022-11-20 19:58:38,560 INFO L226 Difference]: Without dead ends: 362 [2022-11-20 19:58:38,561 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 19:58:38,562 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 19:58:38,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 430 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 19:58:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-20 19:58:38,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2022-11-20 19:58:38,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 247 states have (on average 1.45748987854251) internal successors, (360), 250 states have internal predecessors, (360), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-20 19:58:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2022-11-20 19:58:38,795 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 73 [2022-11-20 19:58:38,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:58:38,795 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2022-11-20 19:58:38,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 19:58:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2022-11-20 19:58:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 19:58:38,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:58:38,798 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:58:38,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 19:58:38,798 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:58:38,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:58:38,799 INFO L85 PathProgramCache]: Analyzing trace with hash -768206959, now seen corresponding path program 1 times [2022-11-20 19:58:38,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:58:38,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545870933] [2022-11-20 19:58:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:38,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:58:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:38,942 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 19:58:38,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:58:38,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545870933] [2022-11-20 19:58:38,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545870933] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 19:58:38,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409864088] [2022-11-20 19:58:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:58:38,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:58:38,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:58:38,944 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:58:38,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 19:58:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:58:39,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 990 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 19:58:39,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:58:39,335 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 19:58:39,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:58:39,419 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 19:58:39,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409864088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:58:39,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1527481462] [2022-11-20 19:58:39,423 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-20 19:58:39,424 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 19:58:39,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 19:58:39,425 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 19:58:39,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 19:59:35,307 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 19:59:35,640 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-20 19:59:35,955 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 19:59:50,930 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 444 DAG size of output: 243 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 19:59:57,295 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:00:13,526 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 474 DAG size of output: 283 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:00:19,344 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 486 DAG size of output: 290 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:00:26,795 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 496 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:00:34,842 WARN L233 SmtUtils]: Spent 7.79s on a formula simplification. DAG size of input: 508 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:00:46,982 WARN L233 SmtUtils]: Spent 10.55s on a formula simplification. DAG size of input: 518 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:01:05,861 WARN L233 SmtUtils]: Spent 18.53s on a formula simplification. DAG size of input: 587 DAG size of output: 409 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:01:25,123 WARN L233 SmtUtils]: Spent 13.75s on a formula simplification. DAG size of input: 586 DAG size of output: 447 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:01:35,922 WARN L233 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 585 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:01:41,551 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 555 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:01:47,333 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 557 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:01:55,477 WARN L233 SmtUtils]: Spent 7.61s on a formula simplification. DAG size of input: 588 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:01:55,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1527481462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:01:55,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:01:55,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-20 20:01:55,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143837507] [2022-11-20 20:01:55,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:01:55,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 20:01:55,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:01:55,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 20:01:55,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2022-11-20 20:01:55,720 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 20:02:12,225 WARN L233 SmtUtils]: Spent 14.64s on a formula simplification. DAG size of input: 509 DAG size of output: 412 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:02:20,129 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 531 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:02:28,210 WARN L233 SmtUtils]: Spent 7.82s on a formula simplification. DAG size of input: 535 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:02:36,272 WARN L233 SmtUtils]: Spent 7.73s on a formula simplification. DAG size of input: 533 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:02:44,889 WARN L233 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 457 DAG size of output: 445 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:02:52,904 WARN L233 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 535 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:02:59,946 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 480 DAG size of output: 399 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:03:07,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:03:07,773 INFO L93 Difference]: Finished difference Result 798 states and 1243 transitions. [2022-11-20 20:03:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 20:03:07,774 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2022-11-20 20:03:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:03:07,778 INFO L225 Difference]: With dead ends: 798 [2022-11-20 20:03:07,778 INFO L226 Difference]: Without dead ends: 504 [2022-11-20 20:03:07,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 194 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 200.5s TimeCoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 20:03:07,781 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 202 mSDsluCounter, 2844 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 3062 SdHoareTripleChecker+Invalid, 1983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:03:07,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 3062 Invalid, 1983 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-11-20 20:03:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-20 20:03:08,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 418. [2022-11-20 20:03:08,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 304 states have (on average 1.5032894736842106) internal successors, (457), 309 states have internal predecessors, (457), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-20 20:03:08,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 634 transitions. [2022-11-20 20:03:08,221 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 634 transitions. Word has length 74 [2022-11-20 20:03:08,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:03:08,222 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 634 transitions. [2022-11-20 20:03:08,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 20:03:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 634 transitions. [2022-11-20 20:03:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 20:03:08,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:03:08,226 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:03:08,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 20:03:08,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:03:08,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:03:08,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:03:08,434 INFO L85 PathProgramCache]: Analyzing trace with hash -348689353, now seen corresponding path program 1 times [2022-11-20 20:03:08,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:03:08,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507867524] [2022-11-20 20:03:08,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:03:08,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:03:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:03:08,624 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 20:03:08,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:03:08,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507867524] [2022-11-20 20:03:08,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507867524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:03:08,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535241297] [2022-11-20 20:03:08,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:03:08,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:03:08,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:03:08,627 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:03:08,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e7dd061-b6ea-4b0c-ba2d-b3f4fa2f7530/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:03:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:03:09,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:03:09,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:03:09,039 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 20:03:09,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:03:09,128 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 20:03:09,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535241297] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:03:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1794754137] [2022-11-20 20:03:09,133 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-20 20:03:09,133 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:03:09,133 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:03:09,134 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:03:09,134 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:05:05,797 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:05:06,151 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-20 20:05:06,489 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-20 20:05:06,818 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2022-11-20 20:05:07,596 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2022-11-20 20:05:07,669 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 20:05:08,007 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 241 for LOIs [2022-11-20 20:05:16,304 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 212 for LOIs [2022-11-20 20:05:16,344 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 230 for LOIs [2022-11-20 20:05:16,425 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 235 for LOIs [2022-11-20 20:05:16,476 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 431 for LOIs [2022-11-20 20:05:18,280 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:05:36,989 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 467 DAG size of output: 263 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:06:07,307 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 508 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:06:17,725 WARN L233 SmtUtils]: Spent 9.02s on a formula simplification. DAG size of input: 518 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:06:23,476 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 537 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:06:39,789 WARN L233 SmtUtils]: Spent 10.23s on a formula simplification. DAG size of input: 533 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:06:46,550 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 526 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:07:00,692 WARN L233 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 528 DAG size of output: 307 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:07:18,422 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 531 DAG size of output: 353 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:08:10,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1794754137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:08:10,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:08:10,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [4, 4, 4] total 59 [2022-11-20 20:08:10,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263120267] [2022-11-20 20:08:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:08:10,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-20 20:08:10,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:08:10,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-20 20:08:10,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3258, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 20:08:10,507 INFO L87 Difference]: Start difference. First operand 418 states and 634 transitions. Second operand has 54 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 32 states have internal predecessors, (39), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 20:08:19,939 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 502 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:08:26,848 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 532 DAG size of output: 370 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:08:33,879 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 537 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:08:40,776 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 514 DAG size of output: 385 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:08:47,084 WARN L233 SmtUtils]: Spent 5.17s on a formula simplification. DAG size of input: 475 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:08:59,553 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 373 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)