./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba --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 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 --- 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-b5237d8 [2022-11-22 02:23:01,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:23:01,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:23:01,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:23:01,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:23:01,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:23:01,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:23:01,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:23:01,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:23:01,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:23:01,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:23:01,565 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:23:01,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:23:01,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:23:01,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:23:01,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:23:01,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:23:01,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:23:01,571 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:23:01,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:23:01,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:23:01,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:23:01,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:23:01,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:23:01,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:23:01,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:23:01,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:23:01,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:23:01,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:23:01,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:23:01,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:23:01,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:23:01,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:23:01,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:23:01,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:23:01,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:23:01,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:23:01,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:23:01,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:23:01,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:23:01,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:23:01,626 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:23:01,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:23:01,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:23:01,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:23:01,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:23:01,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:23:01,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:23:01,669 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:23:01,669 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:23:01,669 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:23:01,669 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:23:01,671 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:23:01,671 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:23:01,671 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:23:01,671 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:23:01,671 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:23:01,672 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:23:01,672 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:23:01,672 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:23:01,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:23:01,673 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:23:01,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:23:01,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:23:01,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:23:01,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:23:01,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:23:01,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:23:01,675 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:23:01,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:23:01,675 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:23:01,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:23:01,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:23:01,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:23:01,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:23:01,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:23:01,677 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:23:01,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:23:01,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:23:01,677 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:23:01,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:23:01,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:23:01,678 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:23:01,678 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_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b548755c8e9cfcfe9ed8b47fb1ac823ac6821056e7770bffa975fdbf413b243 [2022-11-22 02:23:02,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:23:02,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:23:02,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:23:02,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:23:02,069 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:23:02,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2022-11-22 02:23:05,102 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:23:05,472 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:23:05,473 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c [2022-11-22 02:23:05,493 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/data/5d046f65c/631b93fbc4174f34a6c4f0483e5a48f4/FLAG9772de914 [2022-11-22 02:23:05,508 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/data/5d046f65c/631b93fbc4174f34a6c4f0483e5a48f4 [2022-11-22 02:23:05,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:23:05,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:23:05,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:23:05,514 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:23:05,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:23:05,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:23:05" (1/1) ... [2022-11-22 02:23:05,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a79db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:05, skipping insertion in model container [2022-11-22 02:23:05,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:23:05" (1/1) ... [2022-11-22 02:23:05,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:23:05,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:23:06,052 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_2c151ac7-c08d-4666-89f0-54630176a390/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2022-11-22 02:23:06,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:23:06,303 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:23:06,339 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_2c151ac7-c08d-4666-89f0-54630176a390/sv-benchmarks/c/product-lines/email_spec0_productSimulator.cil.c[14867,14880] [2022-11-22 02:23:06,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:23:06,500 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:23:06,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06 WrapperNode [2022-11-22 02:23:06,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:23:06,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:23:06,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:23:06,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:23:06,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,610 INFO L138 Inliner]: procedures = 151, calls = 282, calls flagged for inlining = 67, calls inlined = 64, statements flattened = 1303 [2022-11-22 02:23:06,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:23:06,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:23:06,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:23:06,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:23:06,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,685 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:23:06,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:23:06,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:23:06,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:23:06,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (1/1) ... [2022-11-22 02:23:06,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:23:06,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:23:06,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:23:06,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:23:06,805 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-22 02:23:06,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-22 02:23:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-22 02:23:06,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-22 02:23:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-22 02:23:06,806 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-22 02:23:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-22 02:23:06,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-22 02:23:06,806 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-22 02:23:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-22 02:23:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-22 02:23:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-22 02:23:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-22 02:23:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-22 02:23:06,807 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-22 02:23:06,807 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-22 02:23:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-22 02:23:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-22 02:23:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-22 02:23:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-22 02:23:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-22 02:23:06,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-22 02:23:06,808 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-22 02:23:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-22 02:23:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-22 02:23:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-22 02:23:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-22 02:23:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-22 02:23:06,809 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-22 02:23:06,809 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-22 02:23:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-22 02:23:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-22 02:23:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-22 02:23:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-22 02:23:06,810 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-22 02:23:06,810 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-22 02:23:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-22 02:23:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-22 02:23:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-22 02:23:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-22 02:23:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-22 02:23:06,811 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-22 02:23:06,811 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-22 02:23:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-22 02:23:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-22 02:23:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-22 02:23:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-22 02:23:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:23:06,812 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-22 02:23:06,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-22 02:23:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-22 02:23:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-22 02:23:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-22 02:23:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-22 02:23:06,813 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-22 02:23:06,813 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-22 02:23:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-22 02:23:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-22 02:23:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-22 02:23:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-22 02:23:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-22 02:23:06,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-22 02:23:06,814 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-22 02:23:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-22 02:23:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-22 02:23:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-22 02:23:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-22 02:23:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-22 02:23:06,815 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-22 02:23:06,815 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-22 02:23:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-22 02:23:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-22 02:23:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-22 02:23:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-22 02:23:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-22 02:23:06,816 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-22 02:23:06,816 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-22 02:23:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-22 02:23:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-22 02:23:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-22 02:23:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:23:06,817 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-22 02:23:06,817 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-22 02:23:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-22 02:23:06,822 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-22 02:23:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-22 02:23:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-22 02:23:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-22 02:23:06,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-22 02:23:06,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:23:06,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:23:07,149 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:23:07,152 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:23:08,364 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:23:09,102 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:23:09,103 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:23:09,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:23:09 BoogieIcfgContainer [2022-11-22 02:23:09,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:23:09,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:23:09,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:23:09,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:23:09,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:23:05" (1/3) ... [2022-11-22 02:23:09,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e535a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:23:09, skipping insertion in model container [2022-11-22 02:23:09,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:06" (2/3) ... [2022-11-22 02:23:09,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e535a5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:23:09, skipping insertion in model container [2022-11-22 02:23:09,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:23:09" (3/3) ... [2022-11-22 02:23:09,124 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_productSimulator.cil.c [2022-11-22 02:23:09,153 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:23:09,156 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:23:09,237 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:23:09,245 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;@695af02b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:23:09,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:23:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-22 02:23:09,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-22 02:23:09,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:09,285 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:23:09,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:23:09,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:09,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1210651593, now seen corresponding path program 1 times [2022-11-22 02:23:09,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:23:09,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402196093] [2022-11-22 02:23:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:09,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:23:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:23:10,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:23:10,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402196093] [2022-11-22 02:23:10,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402196093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:23:10,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:23:10,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:23:10,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137962349] [2022-11-22 02:23:10,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:23:10,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:23:10,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:23:10,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:23:10,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:23:10,128 INFO L87 Difference]: Start difference. First operand has 377 states, 223 states have (on average 1.3318385650224216) internal successors, (297), 243 states have internal predecessors, (297), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:23:10,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:10,462 INFO L93 Difference]: Finished difference Result 726 states and 996 transitions. [2022-11-22 02:23:10,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:23:10,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 127 [2022-11-22 02:23:10,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:10,488 INFO L225 Difference]: With dead ends: 726 [2022-11-22 02:23:10,489 INFO L226 Difference]: Without dead ends: 374 [2022-11-22 02:23:10,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:23:10,502 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 6 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:10,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1371 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:23:10,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-11-22 02:23:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-11-22 02:23:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 221 states have (on average 1.2895927601809956) internal successors, (285), 240 states have internal predecessors, (285), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-22 02:23:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 502 transitions. [2022-11-22 02:23:10,581 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 502 transitions. Word has length 127 [2022-11-22 02:23:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:10,583 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 502 transitions. [2022-11-22 02:23:10,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:23:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 502 transitions. [2022-11-22 02:23:10,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 02:23:10,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:10,591 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:23:10,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:23:10,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:23:10,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:10,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1349484640, now seen corresponding path program 1 times [2022-11-22 02:23:10,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:23:10,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751246035] [2022-11-22 02:23:10,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:10,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:23:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:23:10,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:23:10,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751246035] [2022-11-22 02:23:10,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751246035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:23:10,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:23:10,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:23:10,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696326744] [2022-11-22 02:23:10,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:23:10,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:23:10,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:23:10,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:23:10,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:23:10,896 INFO L87 Difference]: Start difference. First operand 374 states and 502 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:23:11,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:11,082 INFO L93 Difference]: Finished difference Result 592 states and 780 transitions. [2022-11-22 02:23:11,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:23:11,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 133 [2022-11-22 02:23:11,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:11,094 INFO L225 Difference]: With dead ends: 592 [2022-11-22 02:23:11,094 INFO L226 Difference]: Without dead ends: 376 [2022-11-22 02:23:11,100 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 [2022-11-22 02:23:11,102 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 0 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:11,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 901 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:23:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-22 02:23:11,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2022-11-22 02:23:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 223 states have (on average 1.2869955156950672) internal successors, (287), 242 states have internal predecessors, (287), 109 states have call successors, (109), 43 states have call predecessors, (109), 43 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-22 02:23:11,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 504 transitions. [2022-11-22 02:23:11,161 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 504 transitions. Word has length 133 [2022-11-22 02:23:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:11,163 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 504 transitions. [2022-11-22 02:23:11,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:23:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 504 transitions. [2022-11-22 02:23:11,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-22 02:23:11,169 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:11,170 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:23:11,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:23:11,171 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:23:11,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:11,181 INFO L85 PathProgramCache]: Analyzing trace with hash 724788588, now seen corresponding path program 1 times [2022-11-22 02:23:11,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:23:11,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463827579] [2022-11-22 02:23:11,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:11,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:23:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:23:11,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:23:11,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463827579] [2022-11-22 02:23:11,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463827579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:23:11,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:23:11,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:23:11,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059207305] [2022-11-22 02:23:11,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:23:11,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:23:11,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:23:11,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:23:11,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:23:11,369 INFO L87 Difference]: Start difference. First operand 376 states and 504 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:23:11,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:23:11,536 INFO L93 Difference]: Finished difference Result 751 states and 1028 transitions. [2022-11-22 02:23:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:23:11,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 138 [2022-11-22 02:23:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:23:11,542 INFO L225 Difference]: With dead ends: 751 [2022-11-22 02:23:11,543 INFO L226 Difference]: Without dead ends: 443 [2022-11-22 02:23:11,546 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 [2022-11-22 02:23:11,552 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 84 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:23:11,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 913 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:23:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-11-22 02:23:11,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 438. [2022-11-22 02:23:11,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 271 states have (on average 1.3431734317343174) internal successors, (364), 292 states have internal predecessors, (364), 123 states have call successors, (123), 43 states have call predecessors, (123), 43 states have return successors, (122), 121 states have call predecessors, (122), 122 states have call successors, (122) [2022-11-22 02:23:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 609 transitions. [2022-11-22 02:23:11,609 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 609 transitions. Word has length 138 [2022-11-22 02:23:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:23:11,610 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 609 transitions. [2022-11-22 02:23:11,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:23:11,611 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 609 transitions. [2022-11-22 02:23:11,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-22 02:23:11,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:23:11,619 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:23:11,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:23:11,620 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:23:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:23:11,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1961562236, now seen corresponding path program 1 times [2022-11-22 02:23:11,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:23:11,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458949693] [2022-11-22 02:23:11,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:11,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:23:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:23:11,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:23:11,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458949693] [2022-11-22 02:23:11,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458949693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:23:11,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507826673] [2022-11-22 02:23:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:23:11,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:23:11,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:23:11,878 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:23:11,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:23:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:23:12,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:23:12,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:23:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:23:12,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:23:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:23:12,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507826673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:23:12,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [18804554] [2022-11-22 02:23:12,550 INFO L159 IcfgInterpreter]: Started Sifa with 116 locations of interest [2022-11-22 02:23:12,551 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:23:12,555 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:23:12,560 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:23:12,560 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:23:59,087 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-22 02:24:00,450 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-22 02:24:02,482 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 479 for LOIs [2022-11-22 02:24:51,199 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 454 for LOIs [2022-11-22 02:24:51,522 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-22 02:24:53,239 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 449 for LOIs [2022-11-22 02:24:53,679 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 477 for LOIs [2022-11-22 02:24:54,683 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 467 for LOIs [2022-11-22 02:24:56,063 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 465 for LOIs [2022-11-22 02:24:57,644 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 463 for LOIs [2022-11-22 02:25:04,280 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 264 for LOIs [2022-11-22 02:25:04,446 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 260 for LOIs [2022-11-22 02:25:05,344 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 449 for LOIs [2022-11-22 02:25:05,690 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 260 for LOIs [2022-11-22 02:25:06,313 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 247 for LOIs [2022-11-22 02:25:06,358 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 246 for LOIs [2022-11-22 02:25:06,409 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 443 for LOIs [2022-11-22 02:25:07,335 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:26:36,575 WARN L233 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 720 DAG size of output: 492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:07,233 WARN L233 SmtUtils]: Spent 9.15s on a formula simplification. DAG size of input: 548 DAG size of output: 393 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:17,000 WARN L233 SmtUtils]: Spent 9.20s on a formula simplification. DAG size of input: 550 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:25,734 WARN L233 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 550 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:34,391 WARN L233 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 548 DAG size of output: 356 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:45,374 WARN L233 SmtUtils]: Spent 9.07s on a formula simplification. DAG size of input: 549 DAG size of output: 394 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:27:58,858 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 443 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:28:05,373 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 458 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:28:11,126 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 541 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:28:25,956 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 537 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:28:47,957 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 467 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:28:53,992 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 471 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:29:00,013 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 469 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:29:32,104 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 516 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:29:52,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [18804554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:29:52,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:29:52,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [84] imperfect sequences [4, 4, 4] total 90 [2022-11-22 02:29:52,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73328995] [2022-11-22 02:29:52,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:29:52,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2022-11-22 02:29:52,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:29:52,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2022-11-22 02:29:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=7688, Unknown=0, NotChecked=0, Total=8010 [2022-11-22 02:29:52,783 INFO L87 Difference]: Start difference. First operand 438 states and 609 transitions. Second operand has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2022-11-22 02:31:01,523 WARN L233 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 721 DAG size of output: 576 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:12,270 WARN L233 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 722 DAG size of output: 577 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:24,087 WARN L233 SmtUtils]: Spent 11.26s on a formula simplification. DAG size of input: 730 DAG size of output: 581 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:33,480 WARN L233 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 646 DAG size of output: 568 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:39,529 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 560 DAG size of output: 542 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:31:47,568 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 439 DAG size of output: 390 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:33:04,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:33:04,073 INFO L93 Difference]: Finished difference Result 1266 states and 1840 transitions. [2022-11-22 02:33:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-22 02:33:04,074 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) Word has length 139 [2022-11-22 02:33:04,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:33:04,079 INFO L225 Difference]: With dead ends: 1266 [2022-11-22 02:33:04,080 INFO L226 Difference]: Without dead ends: 849 [2022-11-22 02:33:04,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 325 SyntacticMatches, 6 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4413 ImplicationChecksByTransitivity, 384.9s TimeCoverageRelationStatistics Valid=468, Invalid=10874, Unknown=0, NotChecked=0, Total=11342 [2022-11-22 02:33:04,085 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 624 mSDsluCounter, 11682 mSDsCounter, 0 mSdLazyCounter, 18787 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 12128 SdHoareTripleChecker+Invalid, 18910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 18787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:33:04,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 12128 Invalid, 18910 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [123 Valid, 18787 Invalid, 0 Unknown, 0 Unchecked, 90.3s Time] [2022-11-22 02:33:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-22 02:33:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 682. [2022-11-22 02:33:04,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 475 states have (on average 1.3621052631578947) internal successors, (647), 497 states have internal predecessors, (647), 143 states have call successors, (143), 66 states have call predecessors, (143), 63 states have return successors, (147), 137 states have call predecessors, (147), 142 states have call successors, (147) [2022-11-22 02:33:04,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 937 transitions. [2022-11-22 02:33:04,430 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 937 transitions. Word has length 139 [2022-11-22 02:33:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:33:04,431 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 937 transitions. [2022-11-22 02:33:04,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 53 states have internal predecessors, (74), 28 states have call successors, (30), 18 states have call predecessors, (30), 11 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2022-11-22 02:33:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 937 transitions. [2022-11-22 02:33:04,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-22 02:33:04,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:33:04,435 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:33:04,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:33:04,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:33:04,636 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:33:04,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:33:04,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1087718300, now seen corresponding path program 1 times [2022-11-22 02:33:04,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:33:04,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117963320] [2022-11-22 02:33:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:33:04,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:33:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:33:04,760 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-22 02:33:04,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:33:04,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117963320] [2022-11-22 02:33:04,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117963320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:33:04,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:33:04,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:33:04,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599513713] [2022-11-22 02:33:04,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:33:04,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:33:04,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:33:04,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:33:04,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:33:04,763 INFO L87 Difference]: Start difference. First operand 682 states and 937 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:33:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:33:05,521 INFO L93 Difference]: Finished difference Result 1700 states and 2396 transitions. [2022-11-22 02:33:05,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:33:05,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2022-11-22 02:33:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:33:05,533 INFO L225 Difference]: With dead ends: 1700 [2022-11-22 02:33:05,533 INFO L226 Difference]: Without dead ends: 1069 [2022-11-22 02:33:05,535 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 [2022-11-22 02:33:05,536 INFO L413 NwaCegarLoop]: 787 mSDtfsCounter, 468 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:33:05,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1200 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:33:05,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2022-11-22 02:33:06,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1065. [2022-11-22 02:33:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 711 states have (on average 1.3558368495077355) internal successors, (964), 750 states have internal predecessors, (964), 248 states have call successors, (248), 108 states have call predecessors, (248), 105 states have return successors, (271), 241 states have call predecessors, (271), 246 states have call successors, (271) [2022-11-22 02:33:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1483 transitions. [2022-11-22 02:33:06,121 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1483 transitions. Word has length 141 [2022-11-22 02:33:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:33:06,122 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1483 transitions. [2022-11-22 02:33:06,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:33:06,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1483 transitions. [2022-11-22 02:33:06,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-22 02:33:06,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:33:06,127 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:33:06,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:33:06,128 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:33:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:33:06,128 INFO L85 PathProgramCache]: Analyzing trace with hash 600468868, now seen corresponding path program 1 times [2022-11-22 02:33:06,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:33:06,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295202861] [2022-11-22 02:33:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:33:06,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:33:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:33:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-22 02:33:06,257 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:33:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295202861] [2022-11-22 02:33:06,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295202861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:33:06,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:33:06,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:33:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994552911] [2022-11-22 02:33:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:33:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:33:06,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:33:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:33:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:33:06,261 INFO L87 Difference]: Start difference. First operand 1065 states and 1483 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:33:07,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:33:07,081 INFO L93 Difference]: Finished difference Result 2845 states and 4052 transitions. [2022-11-22 02:33:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:33:07,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2022-11-22 02:33:07,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:33:07,094 INFO L225 Difference]: With dead ends: 2845 [2022-11-22 02:33:07,094 INFO L226 Difference]: Without dead ends: 1820 [2022-11-22 02:33:07,098 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 [2022-11-22 02:33:07,101 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 478 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:33:07,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1255 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:33:07,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2022-11-22 02:33:07,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1818. [2022-11-22 02:33:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1178 states have (on average 1.3497453310696095) internal successors, (1590), 1248 states have internal predecessors, (1590), 451 states have call successors, (451), 191 states have call predecessors, (451), 188 states have return successors, (519), 441 states have call predecessors, (519), 447 states have call successors, (519) [2022-11-22 02:33:07,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2560 transitions. [2022-11-22 02:33:07,598 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2560 transitions. Word has length 141 [2022-11-22 02:33:07,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:33:07,598 INFO L495 AbstractCegarLoop]: Abstraction has 1818 states and 2560 transitions. [2022-11-22 02:33:07,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-22 02:33:07,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2560 transitions. [2022-11-22 02:33:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-22 02:33:07,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:33:07,606 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:33:07,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:33:07,607 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:33:07,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:33:07,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1977659173, now seen corresponding path program 1 times [2022-11-22 02:33:07,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:33:07,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870050104] [2022-11-22 02:33:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:33:07,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:33:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:33:07,706 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-22 02:33:07,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:33:07,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870050104] [2022-11-22 02:33:07,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870050104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:33:07,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:33:07,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:33:07,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845712476] [2022-11-22 02:33:07,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:33:07,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:33:07,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:33:07,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:33:07,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:33:07,709 INFO L87 Difference]: Start difference. First operand 1818 states and 2560 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 02:33:08,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:33:08,704 INFO L93 Difference]: Finished difference Result 4566 states and 6436 transitions. [2022-11-22 02:33:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:33:08,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 143 [2022-11-22 02:33:08,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:33:08,723 INFO L225 Difference]: With dead ends: 4566 [2022-11-22 02:33:08,723 INFO L226 Difference]: Without dead ends: 3060 [2022-11-22 02:33:08,730 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 [2022-11-22 02:33:08,733 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 434 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:33:08,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1121 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:33:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3060 states. [2022-11-22 02:33:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3060 to 3056. [2022-11-22 02:33:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3056 states, 2010 states have (on average 1.3343283582089551) internal successors, (2682), 2095 states have internal predecessors, (2682), 718 states have call successors, (718), 330 states have call predecessors, (718), 327 states have return successors, (836), 702 states have call predecessors, (836), 710 states have call successors, (836) [2022-11-22 02:33:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3056 states to 3056 states and 4236 transitions. [2022-11-22 02:33:09,571 INFO L78 Accepts]: Start accepts. Automaton has 3056 states and 4236 transitions. Word has length 143 [2022-11-22 02:33:09,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:33:09,571 INFO L495 AbstractCegarLoop]: Abstraction has 3056 states and 4236 transitions. [2022-11-22 02:33:09,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 3 states have call successors, (31), 2 states have call predecessors, (31), 1 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-22 02:33:09,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3056 states and 4236 transitions. [2022-11-22 02:33:09,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-22 02:33:09,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:33:09,585 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:33:09,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:33:09,586 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__VerifyErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:33:09,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:33:09,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1546409337, now seen corresponding path program 1 times [2022-11-22 02:33:09,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:33:09,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707305269] [2022-11-22 02:33:09,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:33:09,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:33:09,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:33:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:33:09,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:33:09,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707305269] [2022-11-22 02:33:09,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707305269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:33:09,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138124728] [2022-11-22 02:33:09,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:33:09,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:33:09,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:33:09,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:33:09,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c151ac7-c08d-4666-89f0-54630176a390/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:33:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:33:10,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:33:10,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:33:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:33:10,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:33:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-22 02:33:10,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138124728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:33:10,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [579812117] [2022-11-22 02:33:10,338 INFO L159 IcfgInterpreter]: Started Sifa with 121 locations of interest [2022-11-22 02:33:10,338 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:33:10,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:33:10,339 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:33:10,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:33:47,478 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 487 for LOIs [2022-11-22 02:33:48,687 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 490 for LOIs [2022-11-22 02:33:50,468 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 479 for LOIs [2022-11-22 02:34:36,542 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 454 for LOIs [2022-11-22 02:34:36,846 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 487 for LOIs [2022-11-22 02:34:38,495 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 457 for LOIs [2022-11-22 02:34:38,814 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 477 for LOIs [2022-11-22 02:34:39,809 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 467 for LOIs [2022-11-22 02:34:44,725 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 274 for LOIs [2022-11-22 02:34:44,906 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 274 for LOIs [2022-11-22 02:34:48,078 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 266 for LOIs [2022-11-22 02:34:48,227 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Verify with input of size 262 for LOIs [2022-11-22 02:34:49,022 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 449 for LOIs [2022-11-22 02:34:49,534 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Forward with input of size 262 for LOIs [2022-11-22 02:34:50,332 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__AutoResponder with input of size 249 for LOIs [2022-11-22 02:34:50,383 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 248 for LOIs [2022-11-22 02:34:50,435 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 449 for LOIs [2022-11-22 02:34:51,304 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 437 for LOIs [2022-11-22 02:34:51,595 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:36:08,542 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 457 DAG size of output: 278 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:36:14,668 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 480 DAG size of output: 298 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:36:24,144 WARN L233 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 720 DAG size of output: 492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)