./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/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_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/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_75c71c9a-23bc-4e8b-861c-b7293a2d2258/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 ca4739abfecd00b8d2b799ccc2617c6e4b4e221f88b8a7e722070835771a8404 --- 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 14:08:19,523 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:08:19,526 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:08:19,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:08:19,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:08:19,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:08:19,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:08:19,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:08:19,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:08:19,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:08:19,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:08:19,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:08:19,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:08:19,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:08:19,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:08:19,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:08:19,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:08:19,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:08:19,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:08:19,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:08:19,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:08:19,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:08:19,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:08:19,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:08:19,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:08:19,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:08:19,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:08:19,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:08:19,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:08:19,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:08:19,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:08:19,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:08:19,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:08:19,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:08:19,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:08:19,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:08:19,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:08:19,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:08:19,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:08:19,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:08:19,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:08:19,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:08:19,669 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:08:19,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:08:19,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:08:19,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:08:19,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:08:19,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:08:19,678 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:08:19,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:08:19,678 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:08:19,678 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:08:19,680 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:08:19,680 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:08:19,681 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:08:19,681 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:08:19,681 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:08:19,681 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:08:19,682 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:08:19,682 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:08:19,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:08:19,684 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:08:19,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:08:19,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:08:19,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:08:19,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:08:19,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:08:19,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:08:19,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:08:19,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:08:19,687 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:08:19,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:08:19,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:08:19,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:08:19,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:08:19,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:08:19,690 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:08:19,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:08:19,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:08:19,690 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:08:19,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:08:19,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:08:19,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:08:19,692 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_75c71c9a-23bc-4e8b-861c-b7293a2d2258/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca4739abfecd00b8d2b799ccc2617c6e4b4e221f88b8a7e722070835771a8404 [2022-11-23 14:08:20,077 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:08:20,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:08:20,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:08:20,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:08:20,126 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:08:20,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/email_spec1_product31.cil.c [2022-11-23 14:08:23,656 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:08:24,070 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:08:24,071 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c [2022-11-23 14:08:24,109 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/data/ff0f58cb8/6adc3242bec442d3971a253e21a59551/FLAGc4b1e8a74 [2022-11-23 14:08:24,131 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/data/ff0f58cb8/6adc3242bec442d3971a253e21a59551 [2022-11-23 14:08:24,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:08:24,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:08:24,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:08:24,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:08:24,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:08:24,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:24" (1/1) ... [2022-11-23 14:08:24,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e2ecda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:24, skipping insertion in model container [2022-11-23 14:08:24,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:24" (1/1) ... [2022-11-23 14:08:24,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:08:24,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:08:25,066 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_75c71c9a-23bc-4e8b-861c-b7293a2d2258/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c[64142,64155] [2022-11-23 14:08:25,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:08:25,085 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:08:25,191 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_75c71c9a-23bc-4e8b-861c-b7293a2d2258/sv-benchmarks/c/product-lines/email_spec1_product31.cil.c[64142,64155] [2022-11-23 14:08:25,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:08:25,223 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:08:25,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25 WrapperNode [2022-11-23 14:08:25,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:08:25,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:08:25,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:08:25,225 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:08:25,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,308 INFO L138 Inliner]: procedures = 131, calls = 218, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1018 [2022-11-23 14:08:25,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:08:25,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:08:25,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:08:25,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:08:25,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,326 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,381 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:08:25,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:08:25,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:08:25,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:08:25,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (1/1) ... [2022-11-23 14:08:25,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:08:25,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:08:25,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:08:25,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:08:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-23 14:08:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-23 14:08:25,490 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-23 14:08:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-23 14:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-23 14:08:25,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-23 14:08:25,491 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 14:08:25,492 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 14:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 14:08:25,492 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 14:08:25,492 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 14:08:25,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 14:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 14:08:25,493 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 14:08:25,493 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-23 14:08:25,493 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-23 14:08:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 14:08:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 14:08:25,494 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 14:08:25,494 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 14:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 14:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 14:08:25,495 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 14:08:25,495 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 14:08:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 14:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:08:25,496 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 14:08:25,496 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 14:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-23 14:08:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-23 14:08:25,497 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 14:08:25,497 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 14:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 14:08:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 14:08:25,498 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 14:08:25,498 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 14:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 14:08:25,499 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 14:08:25,499 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 14:08:25,499 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 14:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-23 14:08:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-23 14:08:25,500 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 14:08:25,500 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 14:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-23 14:08:25,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-23 14:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:08:25,501 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 14:08:25,502 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 14:08:25,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:08:25,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:08:25,724 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:08:25,727 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:08:26,894 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:08:27,531 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:08:27,531 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:08:27,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:27 BoogieIcfgContainer [2022-11-23 14:08:27,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:08:27,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:08:27,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:08:27,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:08:27,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:08:24" (1/3) ... [2022-11-23 14:08:27,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149671d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:27, skipping insertion in model container [2022-11-23 14:08:27,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:25" (2/3) ... [2022-11-23 14:08:27,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149671d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:27, skipping insertion in model container [2022-11-23 14:08:27,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:27" (3/3) ... [2022-11-23 14:08:27,548 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec1_product31.cil.c [2022-11-23 14:08:27,567 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:08:27,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:08:27,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:08:27,654 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;@2719f941, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:08:27,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:08:27,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-23 14:08:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-23 14:08:27,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:27,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:27,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:08:27,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:27,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1783309674, now seen corresponding path program 1 times [2022-11-23 14:08:27,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:27,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499175756] [2022-11-23 14:08:27,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:27,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:28,170 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:08:28,170 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:28,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499175756] [2022-11-23 14:08:28,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499175756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:28,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:08:28,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:08:28,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394253424] [2022-11-23 14:08:28,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:28,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:08:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:28,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:08:28,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:08:28,223 INFO L87 Difference]: Start difference. First operand has 201 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 121 states have internal predecessors, (154), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:08:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:28,417 INFO L93 Difference]: Finished difference Result 319 states and 422 transitions. [2022-11-23 14:08:28,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:08:28,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 64 [2022-11-23 14:08:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:28,432 INFO L225 Difference]: With dead ends: 319 [2022-11-23 14:08:28,432 INFO L226 Difference]: Without dead ends: 198 [2022-11-23 14:08:28,437 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 14:08:28,441 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:28,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 232 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:08:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-23 14:08:28,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2022-11-23 14:08:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 115 states have (on average 1.2869565217391303) internal successors, (148), 118 states have internal predecessors, (148), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-23 14:08:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 265 transitions. [2022-11-23 14:08:28,515 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 265 transitions. Word has length 64 [2022-11-23 14:08:28,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:28,517 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 265 transitions. [2022-11-23 14:08:28,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:08:28,518 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 265 transitions. [2022-11-23 14:08:28,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 14:08:28,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:28,521 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:28,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:08:28,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:08:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash 485538171, now seen corresponding path program 1 times [2022-11-23 14:08:28,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:28,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769142151] [2022-11-23 14:08:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:28,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:08:28,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:28,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769142151] [2022-11-23 14:08:28,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769142151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:28,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:08:28,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:08:28,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407490476] [2022-11-23 14:08:28,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:28,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:08:28,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:28,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:08:28,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:08:28,773 INFO L87 Difference]: Start difference. First operand 198 states and 265 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:08:28,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:28,947 INFO L93 Difference]: Finished difference Result 315 states and 410 transitions. [2022-11-23 14:08:28,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:08:28,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 65 [2022-11-23 14:08:28,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:28,951 INFO L225 Difference]: With dead ends: 315 [2022-11-23 14:08:28,951 INFO L226 Difference]: Without dead ends: 200 [2022-11-23 14:08:28,953 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 14:08:28,955 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:08:28,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 457 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:08:28,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-23 14:08:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-11-23 14:08:28,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 117 states have (on average 1.2820512820512822) internal successors, (150), 120 states have internal predecessors, (150), 59 states have call successors, (59), 23 states have call predecessors, (59), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-23 14:08:28,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 267 transitions. [2022-11-23 14:08:28,977 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 267 transitions. Word has length 65 [2022-11-23 14:08:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:28,977 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 267 transitions. [2022-11-23 14:08:28,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:08:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 267 transitions. [2022-11-23 14:08:28,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-23 14:08:28,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:28,981 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:28,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:08:28,981 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:08:28,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1704321633, now seen corresponding path program 1 times [2022-11-23 14:08:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:28,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541670508] [2022-11-23 14:08:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:28,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:08:29,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:29,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541670508] [2022-11-23 14:08:29,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541670508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:08:29,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:08:29,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:08:29,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273644833] [2022-11-23 14:08:29,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:08:29,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:08:29,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:08:29,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:08:29,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:08:29,201 INFO L87 Difference]: Start difference. First operand 200 states and 267 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:08:29,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:08:29,400 INFO L93 Difference]: Finished difference Result 430 states and 593 transitions. [2022-11-23 14:08:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:08:29,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 70 [2022-11-23 14:08:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:08:29,411 INFO L225 Difference]: With dead ends: 430 [2022-11-23 14:08:29,412 INFO L226 Difference]: Without dead ends: 248 [2022-11-23 14:08:29,418 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 14:08:29,421 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 57 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 474 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 14:08:29,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 474 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:08:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-23 14:08:29,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 243. [2022-11-23 14:08:29,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 149 states have (on average 1.3624161073825503) internal successors, (203), 152 states have internal predecessors, (203), 70 states have call successors, (70), 23 states have call predecessors, (70), 23 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-23 14:08:29,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 342 transitions. [2022-11-23 14:08:29,471 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 342 transitions. Word has length 70 [2022-11-23 14:08:29,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:08:29,473 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 342 transitions. [2022-11-23 14:08:29,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 14:08:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 342 transitions. [2022-11-23 14:08:29,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 14:08:29,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:08:29,477 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:08:29,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:08:29,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:08:29,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:08:29,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1873049773, now seen corresponding path program 1 times [2022-11-23 14:08:29,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:08:29,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345291579] [2022-11-23 14:08:29,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:29,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:08:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:08:29,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:08:29,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345291579] [2022-11-23 14:08:29,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345291579] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:08:29,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680621443] [2022-11-23 14:08:29,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:08:29,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:08:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:08:29,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:08:29,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:08:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:08:30,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:08:30,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:08:30,159 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:08:30,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:08:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:08:30,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680621443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:08:30,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [336656008] [2022-11-23 14:08:30,296 INFO L159 IcfgInterpreter]: Started Sifa with 60 locations of interest [2022-11-23 14:08:30,296 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:08:30,304 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:08:30,310 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:08:30,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:08:58,997 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-23 14:08:59,342 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 14:08:59,653 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:09:28,589 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 468 DAG size of output: 286 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:41,293 WARN L233 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 490 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:51,707 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 512 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:09:58,215 WARN L233 SmtUtils]: Spent 6.22s 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 14:10:06,794 WARN L233 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 570 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:10:13,476 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 572 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:10:20,138 WARN L233 SmtUtils]: Spent 6.33s 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 14:10:21,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [336656008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:21,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:10:21,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-23 14:10:21,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548473016] [2022-11-23 14:10:21,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:21,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 14:10:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 14:10:21,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:10:21,451 INFO L87 Difference]: Start difference. First operand 243 states and 342 transitions. Second operand has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-23 14:10:30,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:30,711 INFO L93 Difference]: Finished difference Result 565 states and 845 transitions. [2022-11-23 14:10:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 14:10:30,712 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 71 [2022-11-23 14:10:30,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:30,714 INFO L225 Difference]: With dead ends: 565 [2022-11-23 14:10:30,714 INFO L226 Difference]: Without dead ends: 340 [2022-11-23 14:10:30,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 81.8s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:10:30,717 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 113 mSDsluCounter, 3353 mSDsCounter, 0 mSdLazyCounter, 2192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 3625 SdHoareTripleChecker+Invalid, 2202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:30,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 3625 Invalid, 2202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 2192 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 14:10:30,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-23 14:10:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2022-11-23 14:10:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 171 states have (on average 1.3801169590643274) internal successors, (236), 174 states have internal predecessors, (236), 70 states have call successors, (70), 24 states have call predecessors, (70), 24 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2022-11-23 14:10:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 375 transitions. [2022-11-23 14:10:30,849 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 375 transitions. Word has length 71 [2022-11-23 14:10:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:30,855 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 375 transitions. [2022-11-23 14:10:30,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-23 14:10:30,860 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 375 transitions. [2022-11-23 14:10:30,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 14:10:30,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:30,868 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:10:30,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:10:31,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:10:31,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:10:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1817652384, now seen corresponding path program 1 times [2022-11-23 14:10:31,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:31,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352232446] [2022-11-23 14:10:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:31,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:31,178 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 14:10:31,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:31,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352232446] [2022-11-23 14:10:31,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352232446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:31,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:31,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:10:31,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418136540] [2022-11-23 14:10:31,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:31,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:10:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:10:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:10:31,182 INFO L87 Difference]: Start difference. First operand 266 states and 375 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:10:31,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:31,475 INFO L93 Difference]: Finished difference Result 625 states and 914 transitions. [2022-11-23 14:10:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:10:31,476 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 76 [2022-11-23 14:10:31,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:31,479 INFO L225 Difference]: With dead ends: 625 [2022-11-23 14:10:31,479 INFO L226 Difference]: Without dead ends: 383 [2022-11-23 14:10:31,480 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 14:10:31,481 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 55 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:31,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 476 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:10:31,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-23 14:10:31,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 378. [2022-11-23 14:10:31,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 258 states have (on average 1.441860465116279) internal successors, (372), 261 states have internal predecessors, (372), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-23 14:10:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 561 transitions. [2022-11-23 14:10:31,647 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 561 transitions. Word has length 76 [2022-11-23 14:10:31,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:31,647 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 561 transitions. [2022-11-23 14:10:31,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-23 14:10:31,648 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 561 transitions. [2022-11-23 14:10:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 14:10:31,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:31,650 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:10:31,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:10:31,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:10:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash -75576913, now seen corresponding path program 1 times [2022-11-23 14:10:31,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:31,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114960590] [2022-11-23 14:10:31,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:31,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:31,781 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 14:10:31,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:31,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114960590] [2022-11-23 14:10:31,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114960590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:10:31,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404133682] [2022-11-23 14:10:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:31,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:10:31,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:10:31,783 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:10:31,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:10:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:32,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:10:32,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:10:32,130 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 14:10:32,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:10:32,196 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 14:10:32,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404133682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:10:32,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1598486930] [2022-11-23 14:10:32,199 INFO L159 IcfgInterpreter]: Started Sifa with 64 locations of interest [2022-11-23 14:10:32,200 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:10:32,200 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:10:32,201 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:10:32,201 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:11:14,868 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-23 14:11:15,199 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-23 14:11:15,709 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 268 for LOIs [2022-11-23 14:11:17,612 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-11-23 14:11:17,649 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 270 for LOIs [2022-11-23 14:11:37,875 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 228 for LOIs [2022-11-23 14:11:37,911 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 248 for LOIs [2022-11-23 14:11:37,979 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 253 for LOIs [2022-11-23 14:11:38,022 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 480 for LOIs [2022-11-23 14:11:43,129 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:12:25,825 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 490 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:12:36,255 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 512 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:12:49,454 WARN L233 SmtUtils]: Spent 12.86s on a formula simplification. DAG size of input: 591 DAG size of output: 334 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:13:02,727 WARN L233 SmtUtils]: Spent 12.92s on a formula simplification. DAG size of input: 593 DAG size of output: 336 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:13:28,429 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 480 DAG size of output: 278 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:13:35,699 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 502 DAG size of output: 284 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:14:16,480 WARN L233 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 543 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:14:26,107 WARN L233 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 545 DAG size of output: 429 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:14:37,220 WARN L233 SmtUtils]: Spent 9.64s on a formula simplification. DAG size of input: 587 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:14:41,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1598486930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:41,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:14:41,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-11-23 14:14:41,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22426347] [2022-11-23 14:14:41,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:41,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-23 14:14:41,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:41,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-23 14:14:41,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=3045, Unknown=0, NotChecked=0, Total=3192 [2022-11-23 14:14:41,670 INFO L87 Difference]: Start difference. First operand 378 states and 561 transitions. Second operand has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 14:14:50,663 WARN L233 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 369 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:14:57,089 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 371 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:04,439 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 369 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:11,864 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 367 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:19,154 WARN L233 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 369 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:27,305 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification. DAG size of input: 375 DAG size of output: 344 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:33,243 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 374 DAG size of output: 337 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:39,101 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 376 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:15:58,119 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification. DAG size of input: 340 DAG size of output: 332 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:16:18,763 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 554 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:16:25,880 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 556 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:16:33,534 WARN L233 SmtUtils]: Spent 7.03s on a formula simplification. DAG size of input: 578 DAG size of output: 402 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:16:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:16:47,084 INFO L93 Difference]: Finished difference Result 873 states and 1345 transitions. [2022-11-23 14:16:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-23 14:16:47,085 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Word has length 77 [2022-11-23 14:16:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:16:47,089 INFO L225 Difference]: With dead ends: 873 [2022-11-23 14:16:47,089 INFO L226 Difference]: Without dead ends: 558 [2022-11-23 14:16:47,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1051 ImplicationChecksByTransitivity, 273.2s TimeCoverageRelationStatistics Valid=273, Invalid=4983, Unknown=0, NotChecked=0, Total=5256 [2022-11-23 14:16:47,093 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 404 mSDsluCounter, 7085 mSDsCounter, 0 mSdLazyCounter, 7244 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 7348 SdHoareTripleChecker+Invalid, 7301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 7244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:16:47,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 7348 Invalid, 7301 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [57 Valid, 7244 Invalid, 0 Unknown, 0 Unchecked, 29.8s Time] [2022-11-23 14:16:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-11-23 14:16:47,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 474. [2022-11-23 14:16:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 337 states have (on average 1.4688427299703264) internal successors, (495), 342 states have internal predecessors, (495), 106 states have call successors, (106), 32 states have call predecessors, (106), 30 states have return successors, (105), 101 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-23 14:16:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 706 transitions. [2022-11-23 14:16:47,345 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 706 transitions. Word has length 77 [2022-11-23 14:16:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:16:47,345 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 706 transitions. [2022-11-23 14:16:47,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 32 states have internal predecessors, (40), 16 states have call successors, (16), 10 states have call predecessors, (16), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-23 14:16:47,346 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 706 transitions. [2022-11-23 14:16:47,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 14:16:47,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:16:47,348 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:16:47,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:16:47,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:16:47,556 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:16:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:16:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1103746270, now seen corresponding path program 1 times [2022-11-23 14:16:47,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:16:47,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201654078] [2022-11-23 14:16:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:16:47,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:16:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:16:47,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:16:47,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:16:47,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201654078] [2022-11-23 14:16:47,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201654078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:16:47,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434903709] [2022-11-23 14:16:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:16:47,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:16:47,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:16:47,843 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:16:47,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:16:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:16:48,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:16:48,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:16:48,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:16:48,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:16:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:16:48,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434903709] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:16:48,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [922489669] [2022-11-23 14:16:48,314 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-23 14:16:48,314 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:16:48,315 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:16:48,315 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:16:48,315 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:17:22,986 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 447 for LOIs [2022-11-23 14:17:23,277 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 233 for LOIs [2022-11-23 14:17:23,337 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 232 for LOIs [2022-11-23 14:17:23,397 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 244 for LOIs [2022-11-23 14:17:24,916 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 215 for LOIs [2022-11-23 14:17:24,974 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 212 for LOIs [2022-11-23 14:17:25,006 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-23 14:17:25,288 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 244 for LOIs [2022-11-23 14:17:40,208 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 202 for LOIs [2022-11-23 14:17:40,237 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 224 for LOIs [2022-11-23 14:17:40,306 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 229 for LOIs [2022-11-23 14:17:40,341 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-11-23 14:17:44,052 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:18:26,182 WARN L233 SmtUtils]: Spent 7.06s on a formula simplification. DAG size of input: 490 DAG size of output: 352 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:18:36,471 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 512 DAG size of output: 301 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:19:13,058 WARN L233 SmtUtils]: Spent 10.22s on a formula simplification. DAG size of input: 424 DAG size of output: 327 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:20:04,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [922489669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:04,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:20:04,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [56] imperfect sequences [4, 4, 4] total 62 [2022-11-23 14:20:04,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922208687] [2022-11-23 14:20:04,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:04,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-23 14:20:04,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:04,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-23 14:20:04,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=3618, Unknown=0, NotChecked=0, Total=3782 [2022-11-23 14:20:04,370 INFO L87 Difference]: Start difference. First operand 474 states and 706 transitions. Second operand has 57 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 18 states have call successors, (18), 13 states have call predecessors, (18), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 14:21:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:17,181 INFO L93 Difference]: Finished difference Result 1009 states and 1558 transitions. [2022-11-23 14:21:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-23 14:21:17,182 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 18 states have call successors, (18), 13 states have call predecessors, (18), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 80 [2022-11-23 14:21:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:17,186 INFO L225 Difference]: With dead ends: 1009 [2022-11-23 14:21:17,186 INFO L226 Difference]: Without dead ends: 694 [2022-11-23 14:21:17,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1177 ImplicationChecksByTransitivity, 177.9s TimeCoverageRelationStatistics Valid=269, Invalid=5431, Unknown=0, NotChecked=0, Total=5700 [2022-11-23 14:21:17,190 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 269 mSDsluCounter, 7254 mSDsCounter, 0 mSdLazyCounter, 8932 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 7531 SdHoareTripleChecker+Invalid, 8972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 8932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:17,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 7531 Invalid, 8972 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [40 Valid, 8932 Invalid, 0 Unknown, 0 Unchecked, 34.1s Time] [2022-11-23 14:21:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-23 14:21:17,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 615. [2022-11-23 14:21:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 457 states have (on average 1.50109409190372) internal successors, (686), 465 states have internal predecessors, (686), 119 states have call successors, (119), 42 states have call predecessors, (119), 38 states have return successors, (118), 109 states have call predecessors, (118), 118 states have call successors, (118) [2022-11-23 14:21:17,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 923 transitions. [2022-11-23 14:21:17,684 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 923 transitions. Word has length 80 [2022-11-23 14:21:17,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:17,685 INFO L495 AbstractCegarLoop]: Abstraction has 615 states and 923 transitions. [2022-11-23 14:21:17,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 33 states have internal predecessors, (40), 18 states have call successors, (18), 13 states have call predecessors, (18), 11 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 14:21:17,685 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 923 transitions. [2022-11-23 14:21:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 14:21:17,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:17,688 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:21:17,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:21:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:17,896 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:21:17,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:17,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1518329218, now seen corresponding path program 1 times [2022-11-23 14:21:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:17,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431994917] [2022-11-23 14:21:17,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:17,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:21:18,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:18,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431994917] [2022-11-23 14:21:18,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431994917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:21:18,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566750594] [2022-11-23 14:21:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:18,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:21:18,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:21:18,035 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:21:18,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75c71c9a-23bc-4e8b-861c-b7293a2d2258/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:21:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:18,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:21:18,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:21:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:21:18,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:21:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-23 14:21:18,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566750594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:21:18,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [223868646] [2022-11-23 14:21:18,465 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2022-11-23 14:21:18,465 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:21:18,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:21:18,465 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:21:18,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs