./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:08:52,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:08:52,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:08:52,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:08:52,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:08:52,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:08:52,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:08:52,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:08:52,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:08:52,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:08:52,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:08:52,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:08:52,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:08:52,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:08:52,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:08:52,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:08:52,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:08:52,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:08:52,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:08:52,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:08:52,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:08:52,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:08:52,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:08:52,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:08:52,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:08:52,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:08:52,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:08:52,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:08:52,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:08:52,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:08:52,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:08:52,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:08:52,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:08:52,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:08:52,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:08:52,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:08:52,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:08:52,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:08:52,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:08:52,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:08:52,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:08:52,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:08:52,707 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:08:52,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:08:52,708 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:08:52,708 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:08:52,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:08:52,709 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:08:52,709 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:08:52,710 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:08:52,710 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:08:52,710 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:08:52,710 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:08:52,711 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:08:52,711 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:08:52,711 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:08:52,711 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:08:52,712 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:08:52,712 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:08:52,712 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:08:52,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:08:52,713 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:08:52,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:08:52,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:08:52,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:08:52,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:08:52,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:08:52,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:08:52,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:08:52,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:08:52,715 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:08:52,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:08:52,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:08:52,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:08:52,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:08:52,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:08:52,717 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:08:52,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:08:52,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:08:52,717 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:08:52,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:08:52,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:08:52,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:08:52,718 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_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4506e3d5e012e1662dc0aa7741c8e3f8f99dc7c5ccf1f202c2f95071bfbf64 [2022-11-20 20:08:52,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:08:52,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:08:52,982 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:08:52,983 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:08:52,984 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:08:52,985 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2022-11-20 20:08:56,089 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:08:56,530 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:08:56,530 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c [2022-11-20 20:08:56,569 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/data/c470d7cb4/6d7b1a71e35d46569d1af6aad8786bac/FLAG91ce8fa52 [2022-11-20 20:08:56,584 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/data/c470d7cb4/6d7b1a71e35d46569d1af6aad8786bac [2022-11-20 20:08:56,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:08:56,592 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:08:56,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:08:56,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:08:56,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:08:56,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:08:56" (1/1) ... [2022-11-20 20:08:56,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f3d677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:56, skipping insertion in model container [2022-11-20 20:08:56,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:08:56" (1/1) ... [2022-11-20 20:08:56,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:08:56,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:08:56,979 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_050990c8-71cb-435a-abe8-5fd1b055b176/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2022-11-20 20:08:57,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:08:57,417 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:08:57,459 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_050990c8-71cb-435a-abe8-5fd1b055b176/sv-benchmarks/c/product-lines/email_spec27_productSimulator.cil.c[11237,11250] [2022-11-20 20:08:57,547 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:08:57,584 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:08:57,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57 WrapperNode [2022-11-20 20:08:57,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:08:57,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:08:57,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:08:57,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:08:57,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,678 INFO L138 Inliner]: procedures = 151, calls = 284, calls flagged for inlining = 66, calls inlined = 63, statements flattened = 1304 [2022-11-20 20:08:57,678 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:08:57,679 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:08:57,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:08:57,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:08:57,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,745 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,761 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:08:57,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:08:57,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:08:57,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:08:57,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (1/1) ... [2022-11-20 20:08:57,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:08:57,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:08:57,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:08:57,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:08:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 20:08:57,869 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 20:08:57,869 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__before__Keys [2022-11-20 20:08:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__before__Keys [2022-11-20 20:08:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Sign [2022-11-20 20:08:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Sign [2022-11-20 20:08:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-20 20:08:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-20 20:08:57,870 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:08:57,870 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:08:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-20 20:08:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-20 20:08:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:08:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:08:57,871 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Verify [2022-11-20 20:08:57,871 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Verify [2022-11-20 20:08:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:08:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:08:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__before__Keys [2022-11-20 20:08:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__before__Keys [2022-11-20 20:08:57,872 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:08:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:08:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:08:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:08:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:08:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:08:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Decrypt [2022-11-20 20:08:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Decrypt [2022-11-20 20:08:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__Encrypt [2022-11-20 20:08:57,874 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__Encrypt [2022-11-20 20:08:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:08:57,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:08:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 20:08:57,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 20:08:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:08:57,874 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:08:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:08:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Forward [2022-11-20 20:08:57,875 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Forward [2022-11-20 20:08:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:08:57,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:08:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-20 20:08:57,876 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-20 20:08:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:08:57,876 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:08:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__before__Encrypt [2022-11-20 20:08:57,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__before__Encrypt [2022-11-20 20:08:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:08:57,876 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 20:08:57,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 20:08:57,880 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 20:08:57,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 20:08:57,880 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__before__AddressBook [2022-11-20 20:08:57,881 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__before__AddressBook [2022-11-20 20:08:57,881 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Encrypt [2022-11-20 20:08:57,881 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Encrypt [2022-11-20 20:08:57,882 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__AutoResponder [2022-11-20 20:08:57,882 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__AutoResponder [2022-11-20 20:08:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-20 20:08:57,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-20 20:08:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:08:57,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:08:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:08:57,883 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:08:57,883 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:08:57,883 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:08:57,884 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-20 20:08:57,884 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-20 20:08:57,884 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 20:08:57,884 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 20:08:57,884 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:08:57,884 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:08:57,884 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:08:57,885 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:08:57,885 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__before__Keys [2022-11-20 20:08:57,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__before__Keys [2022-11-20 20:08:57,885 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__before__Verify [2022-11-20 20:08:57,885 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__before__Verify [2022-11-20 20:08:57,885 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:08:57,885 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:08:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:08:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:08:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:08:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:08:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:08:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__before__Sign [2022-11-20 20:08:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__before__Sign [2022-11-20 20:08:57,886 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2022-11-20 20:08:57,886 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2022-11-20 20:08:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-20 20:08:57,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-20 20:08:57,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:08:57,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:08:58,255 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:08:58,258 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:08:59,428 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:09:00,144 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:09:00,144 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:09:00,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:09:00 BoogieIcfgContainer [2022-11-20 20:09:00,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:09:00,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:09:00,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:09:00,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:09:00,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:08:56" (1/3) ... [2022-11-20 20:09:00,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed8823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:09:00, skipping insertion in model container [2022-11-20 20:09:00,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:08:57" (2/3) ... [2022-11-20 20:09:00,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed8823c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:09:00, skipping insertion in model container [2022-11-20 20:09:00,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:09:00" (3/3) ... [2022-11-20 20:09:00,166 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_productSimulator.cil.c [2022-11-20 20:09:00,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:09:00,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:09:00,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:09:00,282 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;@c0c0c43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:09:00,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:09:00,290 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) [2022-11-20 20:09:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 20:09:00,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:00,320 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:00,320 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:00,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2020671514, now seen corresponding path program 1 times [2022-11-20 20:09:00,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:00,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872020986] [2022-11-20 20:09:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:00,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 20:09:01,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:01,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872020986] [2022-11-20 20:09:01,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872020986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:01,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:01,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:09:01,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322190593] [2022-11-20 20:09:01,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:01,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:09:01,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:01,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:09:01,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:09:01,197 INFO L87 Difference]: Start difference. First operand has 385 states, 227 states have (on average 1.330396475770925) internal successors, (302), 247 states have internal predecessors, (302), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (112), 111 states have call predecessors, (112), 112 states have call successors, (112) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 20:09:01,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:01,604 INFO L93 Difference]: Finished difference Result 742 states and 1022 transitions. [2022-11-20 20:09:01,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:09:01,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 121 [2022-11-20 20:09:01,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:01,620 INFO L225 Difference]: With dead ends: 742 [2022-11-20 20:09:01,620 INFO L226 Difference]: Without dead ends: 382 [2022-11-20 20:09:01,627 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 [2022-11-20 20:09:01,630 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 6 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:01,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1401 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:09:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-20 20:09:01,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-20 20:09:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 225 states have (on average 1.288888888888889) internal successors, (290), 244 states have internal predecessors, (290), 112 states have call successors, (112), 44 states have call predecessors, (112), 44 states have return successors, (111), 110 states have call predecessors, (111), 111 states have call successors, (111) [2022-11-20 20:09:01,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 513 transitions. [2022-11-20 20:09:01,710 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 513 transitions. Word has length 121 [2022-11-20 20:09:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:01,711 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 513 transitions. [2022-11-20 20:09:01,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-20 20:09:01,712 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 513 transitions. [2022-11-20 20:09:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 20:09:01,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:01,718 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:01,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:09:01,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:01,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash -484212045, now seen corresponding path program 1 times [2022-11-20 20:09:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:01,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179359750] [2022-11-20 20:09:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:01,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 20:09:01,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:01,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179359750] [2022-11-20 20:09:01,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179359750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:01,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:01,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:09:01,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539601717] [2022-11-20 20:09:01,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:01,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:09:01,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:09:01,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:01,962 INFO L87 Difference]: Start difference. First operand 382 states and 513 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 20:09:02,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:02,182 INFO L93 Difference]: Finished difference Result 735 states and 995 transitions. [2022-11-20 20:09:02,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:09:02,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 127 [2022-11-20 20:09:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:02,186 INFO L225 Difference]: With dead ends: 735 [2022-11-20 20:09:02,187 INFO L226 Difference]: Without dead ends: 382 [2022-11-20 20:09:02,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:02,191 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 478 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:02,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 470 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:09:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-20 20:09:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-20 20:09:02,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 226 states have (on average 1.2743362831858407) internal successors, (288), 243 states have internal predecessors, (288), 110 states have call successors, (110), 45 states have call predecessors, (110), 45 states have return successors, (109), 108 states have call predecessors, (109), 109 states have call successors, (109) [2022-11-20 20:09:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 507 transitions. [2022-11-20 20:09:02,230 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 507 transitions. Word has length 127 [2022-11-20 20:09:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:02,230 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 507 transitions. [2022-11-20 20:09:02,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 20:09:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 507 transitions. [2022-11-20 20:09:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 20:09:02,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:02,236 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:02,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:09:02,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:02,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:02,237 INFO L85 PathProgramCache]: Analyzing trace with hash 2138652357, now seen corresponding path program 1 times [2022-11-20 20:09:02,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:02,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743418337] [2022-11-20 20:09:02,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:02,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 20:09:02,354 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:02,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743418337] [2022-11-20 20:09:02,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743418337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:02,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:02,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:09:02,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348608303] [2022-11-20 20:09:02,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:02,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:09:02,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:02,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:09:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:02,358 INFO L87 Difference]: Start difference. First operand 382 states and 507 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 20:09:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:02,636 INFO L93 Difference]: Finished difference Result 1076 states and 1451 transitions. [2022-11-20 20:09:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:09:02,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 140 [2022-11-20 20:09:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:02,646 INFO L225 Difference]: With dead ends: 1076 [2022-11-20 20:09:02,646 INFO L226 Difference]: Without dead ends: 723 [2022-11-20 20:09:02,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:02,659 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 479 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:02,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 986 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:09:02,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-20 20:09:02,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 721. [2022-11-20 20:09:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 426 states have (on average 1.272300469483568) internal successors, (542), 456 states have internal predecessors, (542), 205 states have call successors, (205), 89 states have call predecessors, (205), 89 states have return successors, (216), 202 states have call predecessors, (216), 203 states have call successors, (216) [2022-11-20 20:09:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 963 transitions. [2022-11-20 20:09:02,743 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 963 transitions. Word has length 140 [2022-11-20 20:09:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:02,745 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 963 transitions. [2022-11-20 20:09:02,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 20:09:02,751 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 963 transitions. [2022-11-20 20:09:02,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-20 20:09:02,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:02,758 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:02,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:09:02,759 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:02,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:02,762 INFO L85 PathProgramCache]: Analyzing trace with hash -935937360, now seen corresponding path program 1 times [2022-11-20 20:09:02,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:02,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490952604] [2022-11-20 20:09:02,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:02,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:02,889 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 20:09:02,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:02,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490952604] [2022-11-20 20:09:02,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490952604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:02,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:02,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:09:02,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617585868] [2022-11-20 20:09:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:02,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:09:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:09:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:02,892 INFO L87 Difference]: Start difference. First operand 721 states and 963 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 20:09:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:03,033 INFO L93 Difference]: Finished difference Result 723 states and 964 transitions. [2022-11-20 20:09:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:09:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-11-20 20:09:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:03,037 INFO L225 Difference]: With dead ends: 723 [2022-11-20 20:09:03,037 INFO L226 Difference]: Without dead ends: 382 [2022-11-20 20:09:03,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:03,039 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 459 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:03,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 473 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:09:03,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-20 20:09:03,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-11-20 20:09:03,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 227 states have (on average 1.2555066079295154) internal successors, (285), 242 states have internal predecessors, (285), 108 states have call successors, (108), 46 states have call predecessors, (108), 46 states have return successors, (107), 106 states have call predecessors, (107), 107 states have call successors, (107) [2022-11-20 20:09:03,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 500 transitions. [2022-11-20 20:09:03,066 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 500 transitions. Word has length 146 [2022-11-20 20:09:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:03,066 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 500 transitions. [2022-11-20 20:09:03,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 20:09:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 500 transitions. [2022-11-20 20:09:03,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-20 20:09:03,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:03,070 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:03,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 20:09:03,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:03,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash 2062767192, now seen corresponding path program 1 times [2022-11-20 20:09:03,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:03,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259296802] [2022-11-20 20:09:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:03,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:03,185 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 20:09:03,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:03,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259296802] [2022-11-20 20:09:03,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259296802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:03,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:03,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:09:03,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410963095] [2022-11-20 20:09:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:03,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:09:03,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:09:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:03,190 INFO L87 Difference]: Start difference. First operand 382 states and 500 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 20:09:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:03,357 INFO L93 Difference]: Finished difference Result 725 states and 947 transitions. [2022-11-20 20:09:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:09:03,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 146 [2022-11-20 20:09:03,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:03,360 INFO L225 Difference]: With dead ends: 725 [2022-11-20 20:09:03,360 INFO L226 Difference]: Without dead ends: 385 [2022-11-20 20:09:03,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:03,368 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 442 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:03,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 458 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:09:03,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-20 20:09:03,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 379. [2022-11-20 20:09:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 227 states have (on average 1.2070484581497798) internal successors, (274), 237 states have internal predecessors, (274), 105 states have call successors, (105), 46 states have call predecessors, (105), 46 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-20 20:09:03,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 483 transitions. [2022-11-20 20:09:03,400 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 483 transitions. Word has length 146 [2022-11-20 20:09:03,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:03,400 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 483 transitions. [2022-11-20 20:09:03,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (33), 2 states have call predecessors, (33), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-20 20:09:03,402 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 483 transitions. [2022-11-20 20:09:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-20 20:09:03,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:03,405 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:03,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:09:03,405 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:03,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:03,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1683507357, now seen corresponding path program 1 times [2022-11-20 20:09:03,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:03,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23225846] [2022-11-20 20:09:03,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:03,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:09:03,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23225846] [2022-11-20 20:09:03,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23225846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:03,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:03,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:09:03,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627938218] [2022-11-20 20:09:03,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:03,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:09:03,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:09:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:03,634 INFO L87 Difference]: Start difference. First operand 379 states and 483 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 20:09:03,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:03,783 INFO L93 Difference]: Finished difference Result 601 states and 760 transitions. [2022-11-20 20:09:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:09:03,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 163 [2022-11-20 20:09:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:03,789 INFO L225 Difference]: With dead ends: 601 [2022-11-20 20:09:03,789 INFO L226 Difference]: Without dead ends: 381 [2022-11-20 20:09:03,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:03,793 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 0 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:03,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 857 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:09:03,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-20 20:09:03,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-11-20 20:09:03,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 229 states have (on average 1.205240174672489) internal successors, (276), 239 states have internal predecessors, (276), 105 states have call successors, (105), 46 states have call predecessors, (105), 46 states have return successors, (104), 103 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-20 20:09:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 485 transitions. [2022-11-20 20:09:03,823 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 485 transitions. Word has length 163 [2022-11-20 20:09:03,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:03,824 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 485 transitions. [2022-11-20 20:09:03,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 20:09:03,825 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 485 transitions. [2022-11-20 20:09:03,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-11-20 20:09:03,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:03,828 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:03,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 20:09:03,828 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:03,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:03,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1897140614, now seen corresponding path program 1 times [2022-11-20 20:09:03,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:03,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129645605] [2022-11-20 20:09:03,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:03,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:09:04,012 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:04,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129645605] [2022-11-20 20:09:04,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129645605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:04,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:09:04,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:09:04,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329874776] [2022-11-20 20:09:04,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:04,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:09:04,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:04,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:09:04,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:04,016 INFO L87 Difference]: Start difference. First operand 381 states and 485 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 20:09:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:04,205 INFO L93 Difference]: Finished difference Result 760 states and 993 transitions. [2022-11-20 20:09:04,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:09:04,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 168 [2022-11-20 20:09:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:04,209 INFO L225 Difference]: With dead ends: 760 [2022-11-20 20:09:04,209 INFO L226 Difference]: Without dead ends: 448 [2022-11-20 20:09:04,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:09:04,213 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 76 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:04,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 871 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:09:04,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-20 20:09:04,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2022-11-20 20:09:04,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 277 states have (on average 1.2490974729241877) internal successors, (346), 287 states have internal predecessors, (346), 119 states have call successors, (119), 46 states have call predecessors, (119), 46 states have return successors, (118), 117 states have call predecessors, (118), 118 states have call successors, (118) [2022-11-20 20:09:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 583 transitions. [2022-11-20 20:09:04,251 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 583 transitions. Word has length 168 [2022-11-20 20:09:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:04,252 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 583 transitions. [2022-11-20 20:09:04,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-20 20:09:04,252 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 583 transitions. [2022-11-20 20:09:04,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 20:09:04,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:04,256 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:04,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 20:09:04,256 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1701849785, now seen corresponding path program 1 times [2022-11-20 20:09:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:04,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678108445] [2022-11-20 20:09:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:04,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:04,500 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:09:04,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:04,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678108445] [2022-11-20 20:09:04,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678108445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:09:04,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675705761] [2022-11-20 20:09:04,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:04,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:09:04,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:09:04,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:09:04,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:09:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:04,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:09:04,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:09:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:09:05,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:09:05,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675705761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:09:05,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:09:05,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-20 20:09:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414195577] [2022-11-20 20:09:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:09:05,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:09:05,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:09:05,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:09:05,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:09:05,176 INFO L87 Difference]: Start difference. First operand 443 states and 583 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-20 20:09:05,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:09:05,439 INFO L93 Difference]: Finished difference Result 1056 states and 1389 transitions. [2022-11-20 20:09:05,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:09:05,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 169 [2022-11-20 20:09:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:09:05,445 INFO L225 Difference]: With dead ends: 1056 [2022-11-20 20:09:05,445 INFO L226 Difference]: Without dead ends: 843 [2022-11-20 20:09:05,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:09:05,448 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 372 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:09:05,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 928 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:09:05,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-20 20:09:05,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-20 20:09:05,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 529 states have (on average 1.2495274102079394) internal successors, (661), 546 states have internal predecessors, (661), 222 states have call successors, (222), 89 states have call predecessors, (222), 89 states have return successors, (229), 218 states have call predecessors, (229), 220 states have call successors, (229) [2022-11-20 20:09:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1112 transitions. [2022-11-20 20:09:05,538 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1112 transitions. Word has length 169 [2022-11-20 20:09:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:09:05,539 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1112 transitions. [2022-11-20 20:09:05,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 3 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2022-11-20 20:09:05,540 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1112 transitions. [2022-11-20 20:09:05,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 20:09:05,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:09:05,544 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:09:05,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:09:05,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:09:05,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:09:05,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:09:05,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1165925271, now seen corresponding path program 1 times [2022-11-20 20:09:05,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:09:05,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409463429] [2022-11-20 20:09:05,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:05,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:09:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:05,969 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 20:09:05,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:09:05,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409463429] [2022-11-20 20:09:05,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409463429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:09:05,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216858224] [2022-11-20 20:09:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:09:05,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:09:05,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:09:05,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:09:06,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:09:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:09:06,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 1578 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:09:06,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:09:06,475 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 20:09:06,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:09:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 20:09:06,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216858224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:09:06,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1329353035] [2022-11-20 20:09:06,660 INFO L159 IcfgInterpreter]: Started Sifa with 139 locations of interest [2022-11-20 20:09:06,661 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:09:06,665 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:09:06,670 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:09:06,670 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:11:05,417 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-11-20 20:11:06,633 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-20 20:11:06,951 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2022-11-20 20:11:07,267 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-11-20 20:11:08,681 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2022-11-20 20:11:10,554 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2022-11-20 20:11:10,599 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-11-20 20:11:11,387 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 437 for LOIs [2022-11-20 20:11:11,683 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 277 for LOIs [2022-11-20 20:11:13,316 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 239 for LOIs [2022-11-20 20:11:13,358 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-11-20 20:11:13,546 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 289 for LOIs [2022-11-20 20:11:13,729 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 289 for LOIs [2022-11-20 20:11:16,356 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 273 for LOIs [2022-11-20 20:11:17,128 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 255 for LOIs [2022-11-20 20:11:17,716 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 255 for LOIs [2022-11-20 20:11:17,754 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 255 for LOIs [2022-11-20 20:11:17,799 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 421 for LOIs [2022-11-20 20:11:18,485 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:12:49,081 WARN L233 SmtUtils]: Spent 9.21s on a formula simplification. DAG size of input: 732 DAG size of output: 515 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:05,852 WARN L233 SmtUtils]: Spent 10.19s on a formula simplification. DAG size of input: 721 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:14,618 WARN L233 SmtUtils]: Spent 7.87s on a formula simplification. DAG size of input: 727 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:22,870 WARN L233 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 731 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:42,415 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 512 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:51,471 WARN L233 SmtUtils]: Spent 7.93s on a formula simplification. DAG size of input: 556 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:13:59,036 WARN L233 SmtUtils]: Spent 6.97s on a formula simplification. DAG size of input: 554 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:14:23,157 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 557 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:25,120 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 494 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:48,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1329353035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:15:48,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:15:48,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [4, 4, 4] total 101 [2022-11-20 20:15:48,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267300040] [2022-11-20 20:15:48,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:15:48,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-20 20:15:48,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:15:48,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-20 20:15:48,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=9738, Unknown=0, NotChecked=0, Total=10100 [2022-11-20 20:15:48,395 INFO L87 Difference]: Start difference. First operand 841 states and 1112 transitions. Second operand has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-20 20:16:06,754 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 542 DAG size of output: 498 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:12,994 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 541 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:19,146 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 540 DAG size of output: 502 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:25,308 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 539 DAG size of output: 504 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:31,492 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 538 DAG size of output: 506 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:37,834 WARN L233 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 537 DAG size of output: 508 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:06,096 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 491 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:11,922 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 489 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:22,416 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 483 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:29,053 WARN L233 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 484 DAG size of output: 360 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:36,142 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 485 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:58,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:18:58,090 INFO L93 Difference]: Finished difference Result 1994 states and 2720 transitions. [2022-11-20 20:18:58,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-20 20:18:58,091 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) Word has length 164 [2022-11-20 20:18:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:18:58,099 INFO L225 Difference]: With dead ends: 1994 [2022-11-20 20:18:58,099 INFO L226 Difference]: Without dead ends: 1180 [2022-11-20 20:18:58,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 391 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5026 ImplicationChecksByTransitivity, 355.5s TimeCoverageRelationStatistics Valid=513, Invalid=13059, Unknown=0, NotChecked=0, Total=13572 [2022-11-20 20:18:58,108 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 531 mSDsluCounter, 13752 mSDsCounter, 0 mSdLazyCounter, 21815 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 14216 SdHoareTripleChecker+Invalid, 21914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 21815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:18:58,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 14216 Invalid, 21914 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [99 Valid, 21815 Invalid, 0 Unknown, 0 Unchecked, 102.3s Time] [2022-11-20 20:18:58,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-20 20:18:58,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1006. [2022-11-20 20:18:58,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 656 states have (on average 1.2698170731707317) internal successors, (833), 673 states have internal predecessors, (833), 244 states have call successors, (244), 111 states have call predecessors, (244), 105 states have return successors, (251), 234 states have call predecessors, (251), 242 states have call successors, (251) [2022-11-20 20:18:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1328 transitions. [2022-11-20 20:18:58,529 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1328 transitions. Word has length 164 [2022-11-20 20:18:58,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:18:58,529 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1328 transitions. [2022-11-20 20:18:58,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 64 states have (on average 1.375) internal successors, (88), 61 states have internal predecessors, (88), 29 states have call successors, (36), 19 states have call predecessors, (36), 13 states have return successors, (27), 25 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-20 20:18:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1328 transitions. [2022-11-20 20:18:58,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-20 20:18:58,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:18:58,536 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:18:58,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:18:58,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:18:58,746 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:18:58,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:18:58,746 INFO L85 PathProgramCache]: Analyzing trace with hash -289588233, now seen corresponding path program 1 times [2022-11-20 20:18:58,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:18:58,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632834903] [2022-11-20 20:18:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:18:58,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:18:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:18:58,894 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 20:18:58,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:18:58,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632834903] [2022-11-20 20:18:58,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632834903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:18:58,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:18:58,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:18:58,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868979882] [2022-11-20 20:18:58,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:18:58,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:18:58,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:18:58,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:18:58,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:18:58,898 INFO L87 Difference]: Start difference. First operand 1006 states and 1328 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 20:18:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:18:59,686 INFO L93 Difference]: Finished difference Result 1520 states and 2013 transitions. [2022-11-20 20:18:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:18:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 166 [2022-11-20 20:18:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:18:59,693 INFO L225 Difference]: With dead ends: 1520 [2022-11-20 20:18:59,693 INFO L226 Difference]: Without dead ends: 966 [2022-11-20 20:18:59,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:18:59,696 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 448 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 20:18:59,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1178 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 20:18:59,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-11-20 20:19:00,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 964. [2022-11-20 20:19:00,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 627 states have (on average 1.277511961722488) internal successors, (801), 644 states have internal predecessors, (801), 235 states have call successors, (235), 107 states have call predecessors, (235), 101 states have return successors, (233), 225 states have call predecessors, (233), 233 states have call successors, (233) [2022-11-20 20:19:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1269 transitions. [2022-11-20 20:19:00,162 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1269 transitions. Word has length 166 [2022-11-20 20:19:00,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:19:00,162 INFO L495 AbstractCegarLoop]: Abstraction has 964 states and 1269 transitions. [2022-11-20 20:19:00,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-11-20 20:19:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1269 transitions. [2022-11-20 20:19:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-20 20:19:00,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:19:00,169 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:19:00,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 20:19:00,169 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [incoming__before__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:19:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:19:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2083567838, now seen corresponding path program 1 times [2022-11-20 20:19:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:19:00,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36857523] [2022-11-20 20:19:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:19:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:19:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:19:00,401 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 20:19:00,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:19:00,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36857523] [2022-11-20 20:19:00,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36857523] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:19:00,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171641099] [2022-11-20 20:19:00,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:19:00,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:19:00,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:19:00,404 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:19:00,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_050990c8-71cb-435a-abe8-5fd1b055b176/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:19:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:19:00,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 1609 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:19:00,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:19:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 20:19:00,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:19:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-20 20:19:01,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171641099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:19:01,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [405992539] [2022-11-20 20:19:01,092 INFO L159 IcfgInterpreter]: Started Sifa with 144 locations of interest [2022-11-20 20:19:01,092 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:19:01,093 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:19:01,093 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:19:01,093 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:21:02,930 INFO L197 IcfgInterpreter]: Interpreting procedure setup_bob__before__Keys with input of size 500 for LOIs [2022-11-20 20:21:04,162 INFO L197 IcfgInterpreter]: Interpreting procedure select_one with input of size 459 for LOIs [2022-11-20 20:21:04,490 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 439 for LOIs [2022-11-20 20:21:04,794 INFO L197 IcfgInterpreter]: Interpreting procedure setup_rjh__before__Keys with input of size 494 for LOIs [2022-11-20 20:21:06,262 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 275 for LOIs [2022-11-20 20:21:08,222 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 245 for LOIs [2022-11-20 20:21:08,268 INFO L197 IcfgInterpreter]: Interpreting procedure setup_chuck__before__Keys with input of size 248 for LOIs [2022-11-20 20:21:09,071 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 438 for LOIs [2022-11-20 20:21:09,375 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 275 for LOIs [2022-11-20 20:21:10,941 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 239 for LOIs [2022-11-20 20:21:10,984 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Sign with input of size 291 for LOIs [2022-11-20 20:21:12,063 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__AddressBook with input of size 283 for LOIs [2022-11-20 20:21:12,240 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__before__Encrypt with input of size 283 for LOIs [2022-11-20 20:21:14,900 INFO L197 IcfgInterpreter]: Interpreting procedure incoming__before__Decrypt with input of size 275 for LOIs [2022-11-20 20:21:15,717 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 257 for LOIs [2022-11-20 20:21:16,305 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable__before__Encrypt with input of size 257 for LOIs [2022-11-20 20:21:16,345 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 257 for LOIs [2022-11-20 20:21:16,392 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 465 for LOIs [2022-11-20 20:21:21,805 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 262 for LOIs [2022-11-20 20:21:21,859 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:22:30,980 WARN L233 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 513 DAG size of output: 505 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:22:36,467 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 517 DAG size of output: 509 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)