./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/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_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/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_715e8fbd-2b7a-4380-9544-0d28684f3ce5/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 6fc432013ed2168eea9a323e37470d64fe5b972a8b4d9d4e2e5fdd67cd32ffed --- 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 20:13:46,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:13:46,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:13:46,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:13:46,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:13:46,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:13:46,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:13:46,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:13:46,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:13:46,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:13:46,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:13:46,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:13:46,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:13:46,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:13:46,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:13:46,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:13:46,603 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:13:46,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:13:46,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:13:46,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:13:46,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:13:46,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:13:46,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:13:46,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:13:46,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:13:46,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:13:46,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:13:46,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:13:46,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:13:46,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:13:46,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:13:46,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:13:46,640 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:13:46,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:13:46,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:13:46,643 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:13:46,643 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:13:46,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:13:46,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:13:46,645 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:13:46,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:13:46,647 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:13:46,682 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:13:46,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:13:46,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:13:46,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:13:46,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:13:46,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:13:46,685 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:13:46,685 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:13:46,685 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:13:46,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:13:46,686 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:13:46,687 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:13:46,687 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:13:46,687 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:13:46,687 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:13:46,688 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:13:46,688 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:13:46,688 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:13:46,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:13:46,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:13:46,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:13:46,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:13:46,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:13:46,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:13:46,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:13:46,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:13:46,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:13:46,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:13:46,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:13:46,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:13:46,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:13:46,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:13:46,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:13:46,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:13:46,694 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:13:46,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:13:46,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:13:46,694 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:13:46,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:13:46,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:13:46,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:13:46,695 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_715e8fbd-2b7a-4380-9544-0d28684f3ce5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fc432013ed2168eea9a323e37470d64fe5b972a8b4d9d4e2e5fdd67cd32ffed [2022-11-20 20:13:47,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:13:47,047 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:13:47,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:13:47,051 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:13:47,051 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:13:47,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c [2022-11-20 20:13:50,161 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:13:50,599 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:13:50,600 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c [2022-11-20 20:13:50,618 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/data/69c1f0ef2/f4725793c31443b2a9fa242ca1f10057/FLAG36bbce4a0 [2022-11-20 20:13:50,633 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/data/69c1f0ef2/f4725793c31443b2a9fa242ca1f10057 [2022-11-20 20:13:50,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:13:50,638 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:13:50,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:13:50,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:13:50,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:13:50,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:13:50" (1/1) ... [2022-11-20 20:13:50,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4320be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:50, skipping insertion in model container [2022-11-20 20:13:50,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:13:50" (1/1) ... [2022-11-20 20:13:50,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:13:50,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:13:51,361 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_715e8fbd-2b7a-4380-9544-0d28684f3ce5/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c[63802,63815] [2022-11-20 20:13:51,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:13:51,393 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:13:51,578 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_715e8fbd-2b7a-4380-9544-0d28684f3ce5/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c[63802,63815] [2022-11-20 20:13:51,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:13:51,610 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:13:51,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51 WrapperNode [2022-11-20 20:13:51,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:13:51,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:13:51,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:13:51,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:13:51,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,707 INFO L138 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 868 [2022-11-20 20:13:51,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:13:51,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:13:51,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:13:51,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:13:51,721 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,755 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:13:51,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:13:51,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:13:51,766 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:13:51,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (1/1) ... [2022-11-20 20:13:51,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:13:51,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:13:51,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:13:51,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:13:51,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 20:13:51,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 20:13:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:13:51,851 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:13:51,851 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:13:51,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:13:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:13:51,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:13:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:13:51,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:13:51,852 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-20 20:13:51,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-20 20:13:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:13:51,854 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:13:51,854 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:13:51,854 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:13:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-20 20:13:51,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-20 20:13:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:13:51,855 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:13:51,855 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:13:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-20 20:13:51,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-20 20:13:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:13:51,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:13:51,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:13:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-20 20:13:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-20 20:13:51,857 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 20:13:51,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 20:13:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:13:51,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:13:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:13:51,858 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:13:51,858 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:13:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:13:51,859 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-20 20:13:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-20 20:13:51,859 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:13:51,859 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:13:51,860 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:13:51,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:13:51,860 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:13:51,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:13:51,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:13:51,861 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:13:51,861 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:13:51,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:13:51,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:13:52,121 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:13:52,124 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:13:53,119 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:13:53,614 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:13:53,615 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:13:53,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:13:53 BoogieIcfgContainer [2022-11-20 20:13:53,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:13:53,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:13:53,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:13:53,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:13:53,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:13:50" (1/3) ... [2022-11-20 20:13:53,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d362564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:13:53, skipping insertion in model container [2022-11-20 20:13:53,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:13:51" (2/3) ... [2022-11-20 20:13:53,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d362564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:13:53, skipping insertion in model container [2022-11-20 20:13:53,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:13:53" (3/3) ... [2022-11-20 20:13:53,629 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product28.cil.c [2022-11-20 20:13:53,651 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:13:53,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:13:53,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:13:53,738 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;@22b969af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:13:53,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:13:53,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 20:13:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 20:13:53,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:53,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:13:53,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:13:53,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash -237789091, now seen corresponding path program 1 times [2022-11-20 20:13:53,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:53,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328213464] [2022-11-20 20:13:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:53,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:13:54,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:54,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328213464] [2022-11-20 20:13:54,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328213464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:13:54,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:13:54,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:13:54,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025672401] [2022-11-20 20:13:54,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:13:54,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:13:54,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:13:54,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:13:54,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:13:54,272 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:13:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:13:54,479 INFO L93 Difference]: Finished difference Result 277 states and 362 transitions. [2022-11-20 20:13:54,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:13:54,483 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-20 20:13:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:13:54,500 INFO L225 Difference]: With dead ends: 277 [2022-11-20 20:13:54,500 INFO L226 Difference]: Without dead ends: 177 [2022-11-20 20:13:54,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:13:54,514 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:13:54,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:13:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-20 20:13:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-20 20:13:54,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 107 states have internal predecessors, (136), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-20 20:13:54,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2022-11-20 20:13:54,588 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 61 [2022-11-20 20:13:54,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:13:54,589 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2022-11-20 20:13:54,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:13:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2022-11-20 20:13:54,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 20:13:54,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:54,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:13:54,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:13:54,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:13:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2041869761, now seen corresponding path program 1 times [2022-11-20 20:13:54,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:54,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328156459] [2022-11-20 20:13:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:13:54,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:54,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328156459] [2022-11-20 20:13:54,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328156459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:13:54,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:13:54,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:13:54,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819924482] [2022-11-20 20:13:54,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:13:54,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:13:54,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:13:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:13:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:13:54,908 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:13:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:13:55,080 INFO L93 Difference]: Finished difference Result 273 states and 350 transitions. [2022-11-20 20:13:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:13:55,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2022-11-20 20:13:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:13:55,088 INFO L225 Difference]: With dead ends: 273 [2022-11-20 20:13:55,089 INFO L226 Difference]: Without dead ends: 179 [2022-11-20 20:13:55,095 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 20:13:55,099 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:13:55,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:13:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-20 20:13:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-20 20:13:55,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-20 20:13:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-11-20 20:13:55,143 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 62 [2022-11-20 20:13:55,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:13:55,144 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-11-20 20:13:55,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:13:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-11-20 20:13:55,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 20:13:55,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:55,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:13:55,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:13:55,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:13:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:55,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1503020543, now seen corresponding path program 1 times [2022-11-20 20:13:55,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:55,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617792560] [2022-11-20 20:13:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:55,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:13:55,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:55,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617792560] [2022-11-20 20:13:55,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617792560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:13:55,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:13:55,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:13:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381096253] [2022-11-20 20:13:55,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:13:55,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:13:55,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:13:55,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:13:55,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:13:55,369 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:13:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:13:55,517 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2022-11-20 20:13:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:13:55,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-20 20:13:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:13:55,523 INFO L225 Difference]: With dead ends: 388 [2022-11-20 20:13:55,523 INFO L226 Difference]: Without dead ends: 227 [2022-11-20 20:13:55,527 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 20:13:55,533 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 57 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:13:55,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 420 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:13:55,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-20 20:13:55,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2022-11-20 20:13:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 141 states have internal predecessors, (191), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-20 20:13:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2022-11-20 20:13:55,574 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 67 [2022-11-20 20:13:55,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:13:55,575 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2022-11-20 20:13:55,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 20:13:55,576 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2022-11-20 20:13:55,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 20:13:55,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:13:55,585 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:13:55,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:13:55,586 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:13:55,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:13:55,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1949167652, now seen corresponding path program 1 times [2022-11-20 20:13:55,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:13:55,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405210604] [2022-11-20 20:13:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:55,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:13:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:13:55,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:13:55,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405210604] [2022-11-20 20:13:55,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405210604] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:13:55,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868408284] [2022-11-20 20:13:55,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:13:55,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:13:55,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:13:55,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:13:55,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:13:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:13:56,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:13:56,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:13:56,313 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:13:56,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:13:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:13:56,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868408284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:13:56,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [949092524] [2022-11-20 20:13:56,462 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-11-20 20:13:56,463 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:13:56,467 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:13:56,473 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:13:56,477 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:14:26,276 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:14:26,716 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-20 20:14:27,105 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:14:42,053 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:14:48,779 WARN L233 SmtUtils]: Spent 6.63s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:14:55,994 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:02,879 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:10,443 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:16,060 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 486 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:28,114 WARN L233 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 508 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:35,225 WARN L233 SmtUtils]: Spent 5.60s on a formula simplification. DAG size of input: 518 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:15:59,255 WARN L233 SmtUtils]: Spent 23.65s on a formula simplification. DAG size of input: 589 DAG size of output: 456 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:09,506 WARN L233 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 574 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:19,736 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 576 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:29,214 WARN L233 SmtUtils]: Spent 9.14s on a formula simplification. DAG size of input: 576 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:38,550 WARN L233 SmtUtils]: Spent 8.99s on a formula simplification. DAG size of input: 574 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:16:39,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [949092524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:16:39,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:16:39,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2022-11-20 20:16:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402177069] [2022-11-20 20:16:39,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:16:39,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 20:16:39,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:16:39,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 20:16:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-20 20:16:39,921 INFO L87 Difference]: Start difference. First operand 222 states and 312 transitions. Second operand has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 20:16:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:16:48,177 INFO L93 Difference]: Finished difference Result 523 states and 785 transitions. [2022-11-20 20:16:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 20:16:48,178 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 68 [2022-11-20 20:16:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:16:48,181 INFO L225 Difference]: With dead ends: 523 [2022-11-20 20:16:48,181 INFO L226 Difference]: Without dead ends: 319 [2022-11-20 20:16:48,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 132.8s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-20 20:16:48,187 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 145 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:16:48,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 3069 Invalid, 1804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-20 20:16:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-20 20:16:48,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 245. [2022-11-20 20:16:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.4) internal successors, (224), 163 states have internal predecessors, (224), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-20 20:16:48,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 345 transitions. [2022-11-20 20:16:48,329 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 345 transitions. Word has length 68 [2022-11-20 20:16:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:16:48,330 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 345 transitions. [2022-11-20 20:16:48,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-20 20:16:48,330 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 345 transitions. [2022-11-20 20:16:48,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 20:16:48,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:16:48,332 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:16:48,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:16:48,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:16:48,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:16:48,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:16:48,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1203771102, now seen corresponding path program 1 times [2022-11-20 20:16:48,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:16:48,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590064433] [2022-11-20 20:16:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:16:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:16:48,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:16:48,668 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:16:48,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:16:48,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590064433] [2022-11-20 20:16:48,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590064433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:16:48,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:16:48,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:16:48,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136161388] [2022-11-20 20:16:48,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:16:48,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:16:48,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:16:48,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:16:48,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:16:48,671 INFO L87 Difference]: Start difference. First operand 245 states and 345 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:16:48,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:16:48,970 INFO L93 Difference]: Finished difference Result 583 states and 854 transitions. [2022-11-20 20:16:48,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:16:48,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2022-11-20 20:16:48,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:16:48,976 INFO L225 Difference]: With dead ends: 583 [2022-11-20 20:16:48,977 INFO L226 Difference]: Without dead ends: 362 [2022-11-20 20:16:48,978 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 20:16:48,978 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:16:48,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 430 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:16:48,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-20 20:16:49,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2022-11-20 20:16:49,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 247 states have (on average 1.45748987854251) internal successors, (360), 250 states have internal predecessors, (360), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-20 20:16:49,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2022-11-20 20:16:49,238 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 73 [2022-11-20 20:16:49,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:16:49,239 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2022-11-20 20:16:49,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 20:16:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2022-11-20 20:16:49,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 20:16:49,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:16:49,241 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:16:49,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:16:49,242 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:16:49,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:16:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1780686664, now seen corresponding path program 1 times [2022-11-20 20:16:49,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:16:49,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544785777] [2022-11-20 20:16:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:16:49,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:16:49,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:16:49,370 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:16:49,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:16:49,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544785777] [2022-11-20 20:16:49,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544785777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:16:49,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060705773] [2022-11-20 20:16:49,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:16:49,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:16:49,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:16:49,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:16:49,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:16:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:16:49,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:16:49,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:16:49,707 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:16:49,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:16:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 20:16:49,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060705773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:16:49,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [184046608] [2022-11-20 20:16:49,782 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-20 20:16:49,782 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:16:49,783 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:16:49,783 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:16:49,783 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:17:29,089 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:17:29,383 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-11-20 20:17:29,753 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:17:44,156 WARN L233 SmtUtils]: Spent 6.24s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:50,807 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:17:57,623 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:04,049 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:11,062 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:25,909 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 508 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:18:53,349 WARN L233 SmtUtils]: Spent 20.76s on a formula simplification. DAG size of input: 593 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:01,025 WARN L233 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 574 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:10,505 WARN L233 SmtUtils]: Spent 9.16s on a formula simplification. DAG size of input: 576 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:17,339 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 576 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:24,133 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification. DAG size of input: 574 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:33,593 WARN L233 SmtUtils]: Spent 9.11s on a formula simplification. DAG size of input: 574 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:43,166 WARN L233 SmtUtils]: Spent 9.18s on a formula simplification. DAG size of input: 572 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:19:47,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [184046608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:19:47,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:19:47,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2022-11-20 20:19:47,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680685259] [2022-11-20 20:19:47,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:19:47,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 20:19:47,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:19:47,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 20:19:47,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-11-20 20:19:47,575 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 20:20:08,970 WARN L233 SmtUtils]: Spent 19.55s on a formula simplification. DAG size of input: 570 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:14,589 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 421 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:19,811 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 341 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:25,098 WARN L233 SmtUtils]: Spent 5.00s on a formula simplification. DAG size of input: 339 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:30,897 WARN L233 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 414 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:36,818 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 412 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:20:52,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:20:52,411 INFO L93 Difference]: Finished difference Result 808 states and 1262 transitions. [2022-11-20 20:20:52,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 20:20:52,412 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2022-11-20 20:20:52,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:20:52,415 INFO L225 Difference]: With dead ends: 808 [2022-11-20 20:20:52,416 INFO L226 Difference]: Without dead ends: 514 [2022-11-20 20:20:52,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 190.3s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 20:20:52,422 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 355 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-20 20:20:52,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 3410 Invalid, 2332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2022-11-20 20:20:52,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-20 20:20:52,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 419. [2022-11-20 20:20:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 305 states have (on average 1.5049180327868852) internal successors, (459), 310 states have internal predecessors, (459), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-20 20:20:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 636 transitions. [2022-11-20 20:20:52,701 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 636 transitions. Word has length 74 [2022-11-20 20:20:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:20:52,701 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 636 transitions. [2022-11-20 20:20:52,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-20 20:20:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 636 transitions. [2022-11-20 20:20:52,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-20 20:20:52,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:20:52,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:20:52,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:20:52,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:20:52,916 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:20:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:20:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1925302324, now seen corresponding path program 1 times [2022-11-20 20:20:52,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:20:52,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13871071] [2022-11-20 20:20:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:20:52,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:20:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:20:53,206 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:20:53,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:20:53,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13871071] [2022-11-20 20:20:53,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13871071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:20:53,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059297304] [2022-11-20 20:20:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:20:53,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:20:53,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:20:53,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:20:53,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_715e8fbd-2b7a-4380-9544-0d28684f3ce5/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:20:53,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:20:53,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:20:53,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:20:53,627 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:20:53,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:20:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 20:20:53,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059297304] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:20:53,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253823687] [2022-11-20 20:20:53,721 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-20 20:20:53,721 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:20:53,722 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:20:53,722 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:20:53,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:22:47,695 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 20:22:47,990 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-20 20:22:48,274 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-20 20:22:48,552 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 236 for LOIs [2022-11-20 20:22:49,179 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2022-11-20 20:22:49,238 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-20 20:22:49,545 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 231 for LOIs [2022-11-20 20:23:06,500 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 202 for LOIs [2022-11-20 20:23:06,529 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 222 for LOIs [2022-11-20 20:23:06,605 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2022-11-20 20:23:06,653 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-11-20 20:23:08,077 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:23:22,480 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:29,142 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:36,194 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:42,878 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:23:49,929 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:04,785 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 508 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:11,148 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 518 DAG size of output: 294 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:16,778 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 539 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:22,427 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 531 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:40,871 WARN L233 SmtUtils]: Spent 9.13s on a formula simplification. DAG size of input: 536 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:24:47,149 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 529 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:25:01,321 WARN L233 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 531 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:25:16,366 WARN L233 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 534 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:00,201 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 482 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:06,504 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 483 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:13,457 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 524 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:17,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1253823687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:26:17,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:26:17,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-11-20 20:26:17,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89297874] [2022-11-20 20:26:17,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:26:17,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-20 20:26:17,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:26:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-20 20:26:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2022-11-20 20:26:17,256 INFO L87 Difference]: Start difference. First operand 419 states and 636 transitions. Second operand has 55 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 33 states have internal predecessors, (39), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 20:26:41,110 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 351 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:26:52,868 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 356 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)