./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW --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 beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 --- 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-4e7fbc6 [2022-11-23 14:22:06,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:22:06,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:22:06,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:22:06,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:22:06,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:22:06,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:22:06,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:22:06,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:22:06,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:22:06,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:22:06,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:22:06,569 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:22:06,572 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:22:06,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:22:06,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:22:06,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:22:06,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:22:06,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:22:06,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:22:06,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:22:06,593 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:22:06,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:22:06,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:22:06,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:22:06,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:22:06,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:22:06,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:22:06,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:22:06,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:22:06,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:22:06,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:22:06,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:22:06,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:22:06,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:22:06,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:22:06,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:22:06,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:22:06,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:22:06,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:22:06,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:22:06,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:22:06,639 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:22:06,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:22:06,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:22:06,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:22:06,646 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:22:06,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:22:06,646 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:22:06,647 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:22:06,647 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:22:06,647 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:22:06,648 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:22:06,648 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:22:06,649 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:22:06,649 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:22:06,649 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:22:06,649 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:22:06,649 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:22:06,650 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:22:06,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:22:06,651 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:22:06,651 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:22:06,651 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:22:06,651 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:22:06,652 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:22:06,652 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:22:06,652 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:22:06,653 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:22:06,653 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:22:06,653 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:22:06,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:22:06,654 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:22:06,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:22:06,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:06,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:22:06,655 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:22:06,655 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:22:06,655 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:22:06,655 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:22:06,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:22:06,656 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:22:06,656 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:22:06,656 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_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb678f648eb46083c76f273f6eef79e0abada1343858eba26829a720997a379 [2022-11-23 14:22:06,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:22:06,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:22:06,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:22:06,973 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:22:06,974 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:22:06,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec3_product31.cil.c [2022-11-23 14:22:10,222 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:22:10,619 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:22:10,620 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c [2022-11-23 14:22:10,642 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/data/004373898/e1890bd668364a81bcf9cb3e0b6d9211/FLAGa56b641bb [2022-11-23 14:22:10,660 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/data/004373898/e1890bd668364a81bcf9cb3e0b6d9211 [2022-11-23 14:22:10,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:22:10,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:22:10,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:10,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:22:10,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:22:10,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:10" (1/1) ... [2022-11-23 14:22:10,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@660a0373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:10, skipping insertion in model container [2022-11-23 14:22:10,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:10" (1/1) ... [2022-11-23 14:22:10,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:22:10,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:22:11,329 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_ae884537-74ff-4d95-b143-d5686ad99e8a/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c[42138,42151] [2022-11-23 14:22:11,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:11,495 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:22:11,643 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_ae884537-74ff-4d95-b143-d5686ad99e8a/sv-benchmarks/c/product-lines/email_spec3_product31.cil.c[42138,42151] [2022-11-23 14:22:11,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:11,748 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:22:11,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11 WrapperNode [2022-11-23 14:22:11,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:11,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:11,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:22:11,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:22:11,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:11,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:11,899 INFO L138 Inliner]: procedures = 132, calls = 227, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1050 [2022-11-23 14:22:11,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:11,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:22:11,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:22:11,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:22:11,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:11,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:11,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:11,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:11,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:11,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:12,005 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:12,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:12,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:22:12,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:22:12,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:22:12,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:22:12,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (1/1) ... [2022-11-23 14:22:12,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:12,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:12,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:22:12,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:22:12,143 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 14:22:12,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 14:22:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 14:22:12,144 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 14:22:12,144 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 14:22:12,144 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 14:22:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 14:22:12,145 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 14:22:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 14:22:12,145 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 14:22:12,145 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 14:22:12,146 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 14:22:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 14:22:12,146 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 14:22:12,146 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 14:22:12,146 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 14:22:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 14:22:12,147 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 14:22:12,147 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 14:22:12,147 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 14:22:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 14:22:12,148 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 14:22:12,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 14:22:12,150 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 14:22:12,151 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 14:22:12,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:22:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 14:22:12,152 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 14:22:12,152 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 14:22:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 14:22:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 14:22:12,153 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 14:22:12,153 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-23 14:22:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-23 14:22:12,154 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 14:22:12,154 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 14:22:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 14:22:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 14:22:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 14:22:12,155 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 14:22:12,155 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 14:22:12,156 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 14:22:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 14:22:12,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 14:22:12,156 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 14:22:12,157 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 14:22:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 14:22:12,158 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 14:22:12,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:22:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 14:22:12,160 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 14:22:12,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:22:12,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:22:12,525 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:22:12,527 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:22:13,698 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:22:14,253 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:22:14,253 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:22:14,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:14 BoogieIcfgContainer [2022-11-23 14:22:14,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:22:14,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:22:14,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:22:14,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:22:14,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:22:10" (1/3) ... [2022-11-23 14:22:14,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265b4156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:14, skipping insertion in model container [2022-11-23 14:22:14,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:11" (2/3) ... [2022-11-23 14:22:14,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265b4156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:14, skipping insertion in model container [2022-11-23 14:22:14,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:14" (3/3) ... [2022-11-23 14:22:14,274 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product31.cil.c [2022-11-23 14:22:14,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:22:14,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:22:14,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:22:14,385 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;@361ab4b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:22:14,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:22:14,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 211 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) [2022-11-23 14:22:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 14:22:14,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:14,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:14,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:14,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:14,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1054860691, now seen corresponding path program 1 times [2022-11-23 14:22:14,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:14,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167521811] [2022-11-23 14:22:14,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:14,908 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:14,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:14,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167521811] [2022-11-23 14:22:14,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167521811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:14,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:14,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:22:14,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602580920] [2022-11-23 14:22:14,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:14,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:22:14,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:14,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:22:14,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:22:14,952 INFO L87 Difference]: Start difference. First operand has 211 states, 121 states have (on average 1.3140495867768596) internal successors, (159), 127 states have internal predecessors, (159), 64 states have call successors, (64), 24 states have call predecessors, (64), 24 states have return successors, (64), 63 states have call predecessors, (64), 64 states have call successors, (64) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 14:22:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:15,174 INFO L93 Difference]: Finished difference Result 338 states and 452 transitions. [2022-11-23 14:22:15,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:22:15,178 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 83 [2022-11-23 14:22:15,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:15,191 INFO L225 Difference]: With dead ends: 338 [2022-11-23 14:22:15,191 INFO L226 Difference]: Without dead ends: 207 [2022-11-23 14:22:15,197 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 [2022-11-23 14:22:15,201 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:15,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 244 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:15,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-23 14:22:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-11-23 14:22:15,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 119 states have (on average 1.2857142857142858) internal successors, (153), 123 states have internal predecessors, (153), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 14:22:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2022-11-23 14:22:15,272 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 83 [2022-11-23 14:22:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:15,275 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2022-11-23 14:22:15,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 14:22:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2022-11-23 14:22:15,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 14:22:15,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:15,290 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:15,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:22:15,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:15,293 INFO L85 PathProgramCache]: Analyzing trace with hash -829527524, now seen corresponding path program 1 times [2022-11-23 14:22:15,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:15,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042407256] [2022-11-23 14:22:15,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:15,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:15,710 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:15,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042407256] [2022-11-23 14:22:15,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042407256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:15,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:15,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:22:15,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493592968] [2022-11-23 14:22:15,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:15,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:15,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:15,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:15,721 INFO L87 Difference]: Start difference. First operand 207 states and 278 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 14:22:15,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:15,906 INFO L93 Difference]: Finished difference Result 333 states and 436 transitions. [2022-11-23 14:22:15,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:15,907 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 84 [2022-11-23 14:22:15,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:15,909 INFO L225 Difference]: With dead ends: 333 [2022-11-23 14:22:15,910 INFO L226 Difference]: Without dead ends: 209 [2022-11-23 14:22:15,911 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 [2022-11-23 14:22:15,913 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:15,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 481 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:15,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-23 14:22:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-11-23 14:22:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 121 states have (on average 1.28099173553719) internal successors, (155), 125 states have internal predecessors, (155), 64 states have call successors, (64), 24 states have call predecessors, (64), 23 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-11-23 14:22:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2022-11-23 14:22:15,934 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 84 [2022-11-23 14:22:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:15,934 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2022-11-23 14:22:15,935 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, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 14:22:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2022-11-23 14:22:15,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-23 14:22:15,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:15,945 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:15,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:22:15,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:15,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1368970199, now seen corresponding path program 1 times [2022-11-23 14:22:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:15,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121536491] [2022-11-23 14:22:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:15,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:16,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:16,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121536491] [2022-11-23 14:22:16,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121536491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:16,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:16,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:22:16,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175490447] [2022-11-23 14:22:16,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:16,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:16,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:16,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:16,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:16,139 INFO L87 Difference]: Start difference. First operand 209 states and 280 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 14:22:16,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:16,297 INFO L93 Difference]: Finished difference Result 448 states and 619 transitions. [2022-11-23 14:22:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:16,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2022-11-23 14:22:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:16,302 INFO L225 Difference]: With dead ends: 448 [2022-11-23 14:22:16,302 INFO L226 Difference]: Without dead ends: 257 [2022-11-23 14:22:16,308 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 [2022-11-23 14:22:16,311 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 57 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:16,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 499 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:22:16,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-23 14:22:16,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 252. [2022-11-23 14:22:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 153 states have (on average 1.3594771241830066) internal successors, (208), 157 states have internal predecessors, (208), 75 states have call successors, (75), 24 states have call predecessors, (75), 23 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-23 14:22:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 355 transitions. [2022-11-23 14:22:16,375 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 355 transitions. Word has length 89 [2022-11-23 14:22:16,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:16,375 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 355 transitions. [2022-11-23 14:22:16,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-23 14:22:16,376 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 355 transitions. [2022-11-23 14:22:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-23 14:22:16,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:16,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:16,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:22:16,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash -701495312, now seen corresponding path program 1 times [2022-11-23 14:22:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:16,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927622077] [2022-11-23 14:22:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:16,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:16,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927622077] [2022-11-23 14:22:16,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927622077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:22:16,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970032084] [2022-11-23 14:22:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:16,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:16,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:16,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:16,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:22:16,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:17,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:22:17,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:17,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:22:17,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970032084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:17,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [132666708] [2022-11-23 14:22:17,336 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-23 14:22:17,337 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:22:17,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:22:17,351 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:22:17,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:22:46,794 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-23 14:22:47,212 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 14:22:47,646 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:23:29,879 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 490 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:23:55,529 WARN L233 SmtUtils]: Spent 15.00s on a formula simplification. DAG size of input: 577 DAG size of output: 388 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:24:16,610 WARN L233 SmtUtils]: Spent 7.57s on a formula simplification. DAG size of input: 549 DAG size of output: 396 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:24:16,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [132666708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:16,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:24:16,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-23 14:24:16,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570220789] [2022-11-23 14:24:16,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:16,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 14:24:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 14:24:16,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:24:16,821 INFO L87 Difference]: Start difference. First operand 252 states and 355 transitions. Second operand has 21 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-23 14:24:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:35,983 INFO L93 Difference]: Finished difference Result 584 states and 872 transitions. [2022-11-23 14:24:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 14:24:35,985 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 90 [2022-11-23 14:24:35,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:35,989 INFO L225 Difference]: With dead ends: 584 [2022-11-23 14:24:35,989 INFO L226 Difference]: Without dead ends: 350 [2022-11-23 14:24:35,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 97.5s TimeCoverageRelationStatistics Valid=100, Invalid=656, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:24:35,992 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 112 mSDsluCounter, 3392 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3677 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:35,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 3677 Invalid, 2075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-11-23 14:24:35,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-23 14:24:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 275. [2022-11-23 14:24:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 175 states have (on average 1.3771428571428572) internal successors, (241), 179 states have internal predecessors, (241), 75 states have call successors, (75), 25 states have call predecessors, (75), 24 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2022-11-23 14:24:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 388 transitions. [2022-11-23 14:24:36,191 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 388 transitions. Word has length 90 [2022-11-23 14:24:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:36,192 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 388 transitions. [2022-11-23 14:24:36,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 7 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2022-11-23 14:24:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 388 transitions. [2022-11-23 14:24:36,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-23 14:24:36,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:36,196 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:36,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:24:36,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:24:36,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:36,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:36,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1854310805, now seen corresponding path program 1 times [2022-11-23 14:24:36,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:36,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369057304] [2022-11-23 14:24:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:36,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 14:24:36,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:36,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369057304] [2022-11-23 14:24:36,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369057304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:36,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:36,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:24:36,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167876601] [2022-11-23 14:24:36,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:36,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:24:36,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:36,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:24:36,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:24:36,550 INFO L87 Difference]: Start difference. First operand 275 states and 388 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:24:36,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:36,932 INFO L93 Difference]: Finished difference Result 643 states and 940 transitions. [2022-11-23 14:24:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:24:36,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 95 [2022-11-23 14:24:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:36,938 INFO L225 Difference]: With dead ends: 643 [2022-11-23 14:24:36,938 INFO L226 Difference]: Without dead ends: 392 [2022-11-23 14:24:36,939 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 [2022-11-23 14:24:36,941 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 55 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:36,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 499 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:24:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-23 14:24:37,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 387. [2022-11-23 14:24:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 262 states have (on average 1.4389312977099236) internal successors, (377), 266 states have internal predecessors, (377), 100 states have call successors, (100), 25 states have call predecessors, (100), 24 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-23 14:24:37,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 574 transitions. [2022-11-23 14:24:37,182 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 574 transitions. Word has length 95 [2022-11-23 14:24:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:37,183 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 574 transitions. [2022-11-23 14:24:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 14:24:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 574 transitions. [2022-11-23 14:24:37,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-23 14:24:37,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:37,189 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:37,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:24:37,190 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:37,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:37,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1717183221, now seen corresponding path program 1 times [2022-11-23 14:24:37,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:37,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883794580] [2022-11-23 14:24:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:37,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 14:24:37,383 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:37,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883794580] [2022-11-23 14:24:37,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883794580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:24:37,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988616298] [2022-11-23 14:24:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:37,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:24:37,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:24:37,386 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:24:37,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:24:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:37,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:24:37,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:24:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 14:24:37,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:24:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-23 14:24:37,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988616298] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:24:37,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1094904574] [2022-11-23 14:24:37,998 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-23 14:24:37,999 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:24:37,999 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:24:38,000 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:24:38,000 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:25:29,437 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 14:25:29,726 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 14:25:30,037 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:25:57,313 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 468 DAG size of output: 306 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:26:14,180 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 490 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:26:40,631 WARN L233 SmtUtils]: Spent 15.55s on a formula simplification. DAG size of input: 583 DAG size of output: 399 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:26:49,120 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 568 DAG size of output: 320 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:26:54,641 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 564 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:27:01,379 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 572 DAG size of output: 342 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:27:08,223 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 568 DAG size of output: 338 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:27:14,024 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 572 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:27:22,066 WARN L233 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 553 DAG size of output: 400 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:27:31,162 WARN L233 SmtUtils]: Spent 8.70s on a formula simplification. DAG size of input: 584 DAG size of output: 386 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:27:31,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1094904574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:31,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:27:31,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-23 14:27:31,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064378275] [2022-11-23 14:27:31,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:31,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-23 14:27:31,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:31,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-23 14:27:31,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:27:31,355 INFO L87 Difference]: Start difference. First operand 387 states and 574 transitions. Second operand has 25 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-23 14:27:41,028 WARN L233 SmtUtils]: Spent 8.23s on a formula simplification. DAG size of input: 456 DAG size of output: 383 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:28:05,161 WARN L233 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 478 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:28:16,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:16,746 INFO L93 Difference]: Finished difference Result 869 states and 1348 transitions. [2022-11-23 14:28:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 14:28:16,747 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 96 [2022-11-23 14:28:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:16,750 INFO L225 Difference]: With dead ends: 869 [2022-11-23 14:28:16,750 INFO L226 Difference]: Without dead ends: 545 [2022-11-23 14:28:16,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 156.3s TimeCoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2022-11-23 14:28:16,760 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 305 mSDsluCounter, 3501 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:16,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 3764 Invalid, 2239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-11-23 14:28:16,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-23 14:28:17,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 449. [2022-11-23 14:28:17,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 320 states have (on average 1.4875) internal successors, (476), 326 states have internal predecessors, (476), 103 states have call successors, (103), 26 states have call predecessors, (103), 25 states have return successors, (100), 98 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-23 14:28:17,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 679 transitions. [2022-11-23 14:28:17,009 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 679 transitions. Word has length 96 [2022-11-23 14:28:17,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:17,010 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 679 transitions. [2022-11-23 14:28:17,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-23 14:28:17,010 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 679 transitions. [2022-11-23 14:28:17,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-23 14:28:17,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:17,013 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:28:17,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 14:28:17,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 14:28:17,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:28:17,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:17,221 INFO L85 PathProgramCache]: Analyzing trace with hash 274847536, now seen corresponding path program 1 times [2022-11-23 14:28:17,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:17,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190280181] [2022-11-23 14:28:17,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:17,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:28:17,398 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:17,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190280181] [2022-11-23 14:28:17,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190280181] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:28:17,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601290193] [2022-11-23 14:28:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:17,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:28:17,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:28:17,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:28:17,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:28:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:17,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:28:17,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:28:17,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:28:17,888 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:28:17,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601290193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:28:17,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [303020337] [2022-11-23 14:28:17,893 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-23 14:28:17,893 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:28:17,894 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:28:17,894 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:28:17,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:28:57,264 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 14:28:57,581 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 238 for LOIs [2022-11-23 14:28:57,676 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 247 for LOIs [2022-11-23 14:28:57,742 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 454 for LOIs [2022-11-23 14:28:58,074 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 14:28:58,386 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:29:38,259 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 490 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:30:03,425 WARN L233 SmtUtils]: Spent 14.94s on a formula simplification. DAG size of input: 623 DAG size of output: 463 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:30:14,840 WARN L233 SmtUtils]: Spent 7.08s on a formula simplification. DAG size of input: 573 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:30:22,312 WARN L233 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 575 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:30:32,637 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 531 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:30:43,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [303020337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:30:43,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:30:43,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-23 14:30:43,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910261579] [2022-11-23 14:30:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:30:43,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 14:30:43,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:30:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 14:30:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1080, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:30:43,103 INFO L87 Difference]: Start difference. First operand 449 states and 679 transitions. Second operand has 30 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2022-11-23 14:30:50,815 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 529 DAG size of output: 365 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:31:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:31:10,850 INFO L93 Difference]: Finished difference Result 932 states and 1451 transitions. [2022-11-23 14:31:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-23 14:31:10,850 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) Word has length 99 [2022-11-23 14:31:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:31:10,854 INFO L225 Difference]: With dead ends: 932 [2022-11-23 14:31:10,854 INFO L226 Difference]: Without dead ends: 608 [2022-11-23 14:31:10,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 264 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 113.1s TimeCoverageRelationStatistics Valid=128, Invalid=1204, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 14:31:10,857 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 114 mSDsluCounter, 4536 mSDsCounter, 0 mSdLazyCounter, 3929 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 4793 SdHoareTripleChecker+Invalid, 3944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:31:10,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 4793 Invalid, 3944 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [15 Valid, 3929 Invalid, 0 Unknown, 0 Unchecked, 18.5s Time] [2022-11-23 14:31:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-23 14:31:11,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 534. [2022-11-23 14:31:11,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 397 states have (on average 1.513853904282116) internal successors, (601), 405 states have internal predecessors, (601), 108 states have call successors, (108), 29 states have call predecessors, (108), 28 states have return successors, (105), 101 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-23 14:31:11,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 814 transitions. [2022-11-23 14:31:11,310 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 814 transitions. Word has length 99 [2022-11-23 14:31:11,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:31:11,310 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 814 transitions. [2022-11-23 14:31:11,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 states have internal predecessors, (47), 10 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (20), 10 states have call predecessors, (20), 10 states have call successors, (20) [2022-11-23 14:31:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 814 transitions. [2022-11-23 14:31:11,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-23 14:31:11,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:31:11,313 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:31:11,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:31:11,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:31:11,515 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:31:11,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:31:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1857995983, now seen corresponding path program 1 times [2022-11-23 14:31:11,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:31:11,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053171847] [2022-11-23 14:31:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:31:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:31:11,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:31:11,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053171847] [2022-11-23 14:31:11,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053171847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:31:11,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019683663] [2022-11-23 14:31:11,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:31:11,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:31:11,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:31:11,675 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:31:11,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae884537-74ff-4d95-b143-d5686ad99e8a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:31:12,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:31:12,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 1165 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:31:12,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:31:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:31:12,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:31:12,174 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 14:31:12,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019683663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:31:12,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [455631410] [2022-11-23 14:31:12,178 INFO L159 IcfgInterpreter]: Started Sifa with 81 locations of interest [2022-11-23 14:31:12,179 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:31:12,179 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:31:12,180 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:31:12,180 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:32:18,012 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 14:32:18,293 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 273 for LOIs [2022-11-23 14:32:20,196 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2022-11-23 14:32:20,238 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 14:32:20,540 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 275 for LOIs [2022-11-23 14:33:17,894 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 250 for LOIs [2022-11-23 14:33:17,926 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 458 for LOIs [2022-11-23 14:33:18,509 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 446 for LOIs [2022-11-23 14:33:19,163 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailFrom with input of size 253 for LOIs [2022-11-23 14:33:19,205 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 251 for LOIs [2022-11-23 14:33:19,246 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 482 for LOIs [2022-11-23 14:33:24,135 INFO L197 IcfgInterpreter]: Interpreting procedure isSigned with input of size 255 for LOIs [2022-11-23 14:33:24,177 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:34:05,723 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 490 DAG size of output: 323 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:34:27,389 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 580 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:34:38,896 WARN L233 SmtUtils]: Spent 11.13s on a formula simplification. DAG size of input: 576 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:35:09,914 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 477 DAG size of output: 283 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:35:17,566 WARN L233 SmtUtils]: Spent 7.02s on a formula simplification. DAG size of input: 499 DAG size of output: 287 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:35:40,707 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 458 DAG size of output: 275 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)