./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI --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 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 --- 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-5e519f3 [2022-11-03 01:47:17,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:47:17,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:47:17,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:47:17,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:47:17,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:47:17,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:47:17,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:47:17,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:47:17,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:47:17,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:47:17,223 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:47:17,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:47:17,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:47:17,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:47:17,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:47:17,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:47:17,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:47:17,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:47:17,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:47:17,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:47:17,250 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:47:17,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:47:17,252 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:47:17,255 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:47:17,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:47:17,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:47:17,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:47:17,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:47:17,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:47:17,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:47:17,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:47:17,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:47:17,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:47:17,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:47:17,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:47:17,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:47:17,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:47:17,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:47:17,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:47:17,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:47:17,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:47:17,323 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:47:17,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:47:17,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:47:17,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:47:17,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:47:17,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:47:17,325 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:47:17,326 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:47:17,326 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:47:17,326 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:47:17,328 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:47:17,328 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:47:17,328 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:47:17,328 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:47:17,329 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:47:17,329 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:47:17,329 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:47:17,329 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:47:17,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:47:17,330 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:47:17,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:47:17,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:47:17,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:47:17,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:47:17,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:47:17,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:47:17,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:47:17,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:47:17,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:47:17,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:47:17,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:47:17,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:47:17,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:47:17,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:47:17,334 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:47:17,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:47:17,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:47:17,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:47:17,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:47:17,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:47:17,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:47:17,336 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_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77705a63487ad2667abe7e61d03fbac9d343255168bc183f3ebec6cdcc7d3824 [2022-11-03 01:47:17,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:47:17,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:47:17,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:47:17,758 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:47:17,759 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:47:17,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2022-11-03 01:47:17,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/data/2ec171dbb/e60aa6c80c484f7b9c82f2e02958f834/FLAG74977a4cc [2022-11-03 01:47:18,571 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:47:18,571 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c [2022-11-03 01:47:18,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/data/2ec171dbb/e60aa6c80c484f7b9c82f2e02958f834/FLAG74977a4cc [2022-11-03 01:47:18,798 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/data/2ec171dbb/e60aa6c80c484f7b9c82f2e02958f834 [2022-11-03 01:47:18,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:47:18,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:47:18,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:47:18,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:47:18,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:47:18,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:47:18" (1/1) ... [2022-11-03 01:47:18,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b45391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:18, skipping insertion in model container [2022-11-03 01:47:18,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:47:18" (1/1) ... [2022-11-03 01:47:18,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:47:18,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:47:19,372 WARN L230 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_7be3846c-c82d-490d-9624-cac88873a686/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2022-11-03 01:47:19,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:47:19,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:47:19,724 WARN L230 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_7be3846c-c82d-490d-9624-cac88873a686/sv-benchmarks/c/product-lines/email_spec7_product31.cil.c[7290,7303] [2022-11-03 01:47:19,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:47:19,818 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:47:19,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19 WrapperNode [2022-11-03 01:47:19,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:47:19,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:47:19,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:47:19,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:47:19,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:19,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:19,973 INFO L138 Inliner]: procedures = 131, calls = 215, calls flagged for inlining = 61, calls inlined = 56, statements flattened = 1005 [2022-11-03 01:47:19,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:47:19,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:47:19,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:47:19,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:47:19,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:19,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:19,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:20,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:20,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:20,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:20,059 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:20,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:20,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:47:20,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:47:20,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:47:20,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:47:20,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (1/1) ... [2022-11-03 01:47:20,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:47:20,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:20,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:47:20,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:47:20,198 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 01:47:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 01:47:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 01:47:20,199 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 01:47:20,199 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 01:47:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 01:47:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 01:47:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 01:47:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 01:47:20,200 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 01:47:20,200 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 01:47:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 01:47:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 01:47:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 01:47:20,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 01:47:20,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 01:47:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 01:47:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 01:47:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 01:47:20,202 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 01:47:20,202 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 01:47:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 01:47:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 01:47:20,203 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 01:47:20,203 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 01:47:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:47:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 01:47:20,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 01:47:20,204 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 01:47:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 01:47:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 01:47:20,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 01:47:20,205 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 01:47:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 01:47:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 01:47:20,206 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 01:47:20,206 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 01:47:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 01:47:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 01:47:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 01:47:20,207 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 01:47:20,207 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 01:47:20,208 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 01:47:20,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 01:47:20,209 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 01:47:20,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 01:47:20,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:47:20,211 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 01:47:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 01:47:20,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:47:20,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:47:20,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:47:20,522 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:47:21,536 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:47:22,072 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:47:22,072 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:47:22,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:22 BoogieIcfgContainer [2022-11-03 01:47:22,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:47:22,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:47:22,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:47:22,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:47:22,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:47:18" (1/3) ... [2022-11-03 01:47:22,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60279323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:22, skipping insertion in model container [2022-11-03 01:47:22,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:47:19" (2/3) ... [2022-11-03 01:47:22,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60279323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:47:22, skipping insertion in model container [2022-11-03 01:47:22,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:47:22" (3/3) ... [2022-11-03 01:47:22,086 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec7_product31.cil.c [2022-11-03 01:47:22,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:47:22,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:47:22,189 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:47:22,196 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;@74177bf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:47:22,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:47:22,205 INFO L276 IsEmpty]: Start isEmpty. Operand has 198 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 119 states have internal predecessors, (151), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-11-03 01:47:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 01:47:22,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:22,224 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:22,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:22,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:22,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1450133937, now seen corresponding path program 1 times [2022-11-03 01:47:22,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:22,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928017388] [2022-11-03 01:47:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:22,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:47:22,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:22,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928017388] [2022-11-03 01:47:22,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928017388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:22,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:22,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:47:22,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409227145] [2022-11-03 01:47:22,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:22,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:47:22,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:22,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:47:22,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:47:22,836 INFO L87 Difference]: Start difference. First operand has 198 states, 115 states have (on average 1.3130434782608695) internal successors, (151), 119 states have internal predecessors, (151), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:47:23,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:23,059 INFO L93 Difference]: Finished difference Result 313 states and 412 transitions. [2022-11-03 01:47:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:47:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 77 [2022-11-03 01:47:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:23,081 INFO L225 Difference]: With dead ends: 313 [2022-11-03 01:47:23,081 INFO L226 Difference]: Without dead ends: 195 [2022-11-03 01:47:23,086 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 [2022-11-03 01:47:23,090 INFO L413 NwaCegarLoop]: 227 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, 227 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 [2022-11-03 01:47:23,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:47:23,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-03 01:47:23,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2022-11-03 01:47:23,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 113 states have (on average 1.2831858407079646) internal successors, (145), 116 states have internal predecessors, (145), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-03 01:47:23,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 260 transitions. [2022-11-03 01:47:23,154 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 260 transitions. Word has length 77 [2022-11-03 01:47:23,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:23,156 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 260 transitions. [2022-11-03 01:47:23,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:47:23,156 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 260 transitions. [2022-11-03 01:47:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 01:47:23,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:23,161 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:23,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:47:23,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:23,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:23,162 INFO L85 PathProgramCache]: Analyzing trace with hash 366795396, now seen corresponding path program 1 times [2022-11-03 01:47:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:23,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653649712] [2022-11-03 01:47:23,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:23,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:23,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:23,445 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:47:23,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:23,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653649712] [2022-11-03 01:47:23,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653649712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:23,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:23,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:47:23,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805873628] [2022-11-03 01:47:23,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:23,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:47:23,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:47:23,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:47:23,451 INFO L87 Difference]: Start difference. First operand 195 states and 260 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:47:23,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:23,609 INFO L93 Difference]: Finished difference Result 309 states and 400 transitions. [2022-11-03 01:47:23,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:47:23,610 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 78 [2022-11-03 01:47:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:23,613 INFO L225 Difference]: With dead ends: 309 [2022-11-03 01:47:23,613 INFO L226 Difference]: Without dead ends: 197 [2022-11-03 01:47:23,615 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 [2022-11-03 01:47:23,616 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 447 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 [2022-11-03 01:47:23,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:47:23,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-03 01:47:23,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2022-11-03 01:47:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 115 states have (on average 1.2782608695652173) internal successors, (147), 118 states have internal predecessors, (147), 58 states have call successors, (58), 23 states have call predecessors, (58), 23 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-11-03 01:47:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 262 transitions. [2022-11-03 01:47:23,655 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 262 transitions. Word has length 78 [2022-11-03 01:47:23,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:23,656 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 262 transitions. [2022-11-03 01:47:23,656 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, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:47:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 262 transitions. [2022-11-03 01:47:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 01:47:23,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:23,659 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:23,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:47:23,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:23,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:23,669 INFO L85 PathProgramCache]: Analyzing trace with hash -720933932, now seen corresponding path program 1 times [2022-11-03 01:47:23,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:23,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529105827] [2022-11-03 01:47:23,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:23,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:23,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:47:23,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:23,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529105827] [2022-11-03 01:47:23,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529105827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:47:23,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:47:23,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:47:23,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375644697] [2022-11-03 01:47:23,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:47:23,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:47:23,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:47:23,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:47:23,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:47:23,950 INFO L87 Difference]: Start difference. First operand 197 states and 262 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:47:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:47:24,113 INFO L93 Difference]: Finished difference Result 424 states and 583 transitions. [2022-11-03 01:47:24,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:47:24,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 83 [2022-11-03 01:47:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:47:24,121 INFO L225 Difference]: With dead ends: 424 [2022-11-03 01:47:24,121 INFO L226 Difference]: Without dead ends: 245 [2022-11-03 01:47:24,123 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 [2022-11-03 01:47:24,125 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 57 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:47:24,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 455 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:47:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-03 01:47:24,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 240. [2022-11-03 01:47:24,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 147 states have (on average 1.3605442176870748) internal successors, (200), 150 states have internal predecessors, (200), 69 states have call successors, (69), 23 states have call predecessors, (69), 23 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-03 01:47:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 337 transitions. [2022-11-03 01:47:24,155 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 337 transitions. Word has length 83 [2022-11-03 01:47:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:47:24,158 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 337 transitions. [2022-11-03 01:47:24,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 01:47:24,159 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 337 transitions. [2022-11-03 01:47:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-03 01:47:24,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:47:24,171 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:47:24,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:47:24,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:47:24,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:47:24,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1953894951, now seen corresponding path program 1 times [2022-11-03 01:47:24,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:47:24,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576364856] [2022-11-03 01:47:24,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:24,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:47:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:47:24,389 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:47:24,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576364856] [2022-11-03 01:47:24,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576364856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:47:24,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190623476] [2022-11-03 01:47:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:47:24,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:47:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:47:24,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:47:24,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:47:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:47:24,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:47:24,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:47:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:47:24,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:47:25,055 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:47:25,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190623476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:47:25,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1321058393] [2022-11-03 01:47:25,090 INFO L159 IcfgInterpreter]: Started Sifa with 69 locations of interest [2022-11-03 01:47:25,091 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:47:25,100 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:47:25,107 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:47:25,111 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:47:56,633 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 439 for LOIs [2022-11-03 01:47:57,041 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 01:47:57,403 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:48:26,663 WARN L234 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 464 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:42,677 WARN L234 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 498 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:48:49,778 WARN L234 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 508 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:07,684 WARN L234 SmtUtils]: Spent 16.38s on a formula simplification. DAG size of input: 581 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:25,498 WARN L234 SmtUtils]: Spent 16.19s on a formula simplification. DAG size of input: 583 DAG size of output: 326 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:36,166 WARN L234 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 568 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:46,787 WARN L234 SmtUtils]: Spent 10.06s on a formula simplification. DAG size of input: 564 DAG size of output: 373 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:49:48,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1321058393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:48,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:49:48,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [4, 4, 4] total 26 [2022-11-03 01:49:48,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773555519] [2022-11-03 01:49:48,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:48,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 01:49:48,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:48,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 01:49:48,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-03 01:49:48,041 INFO L87 Difference]: Start difference. First operand 240 states and 337 transitions. Second operand has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-03 01:49:57,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:57,520 INFO L93 Difference]: Finished difference Result 559 states and 835 transitions. [2022-11-03 01:49:57,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 01:49:57,521 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 84 [2022-11-03 01:49:57,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:57,523 INFO L225 Difference]: With dead ends: 559 [2022-11-03 01:49:57,523 INFO L226 Difference]: Without dead ends: 337 [2022-11-03 01:49:57,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 110.6s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-03 01:49:57,525 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 137 mSDsluCounter, 3514 mSDsCounter, 0 mSdLazyCounter, 2073 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:57,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 3665 Invalid, 2086 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [13 Valid, 2073 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-03 01:49:57,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-03 01:49:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 263. [2022-11-03 01:49:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 169 states have (on average 1.378698224852071) internal successors, (233), 172 states have internal predecessors, (233), 69 states have call successors, (69), 24 states have call predecessors, (69), 24 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2022-11-03 01:49:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 370 transitions. [2022-11-03 01:49:57,664 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 370 transitions. Word has length 84 [2022-11-03 01:49:57,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:57,665 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 370 transitions. [2022-11-03 01:49:57,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 2.625) internal successors, (42), 15 states have internal predecessors, (42), 7 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2022-11-03 01:49:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 370 transitions. [2022-11-03 01:49:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 01:49:57,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:57,668 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:57,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:49:57,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:57,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:57,884 INFO L85 PathProgramCache]: Analyzing trace with hash 203216646, now seen corresponding path program 1 times [2022-11-03 01:49:57,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:57,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933212170] [2022-11-03 01:49:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:57,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:49:58,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:58,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933212170] [2022-11-03 01:49:58,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933212170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:49:58,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:49:58,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:49:58,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87151249] [2022-11-03 01:49:58,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:49:58,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:49:58,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:49:58,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:49:58,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:49:58,027 INFO L87 Difference]: Start difference. First operand 263 states and 370 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 01:49:58,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:49:58,355 INFO L93 Difference]: Finished difference Result 619 states and 904 transitions. [2022-11-03 01:49:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:49:58,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2022-11-03 01:49:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:49:58,359 INFO L225 Difference]: With dead ends: 619 [2022-11-03 01:49:58,359 INFO L226 Difference]: Without dead ends: 380 [2022-11-03 01:49:58,360 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 [2022-11-03 01:49:58,361 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 55 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:49:58,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 468 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:49:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-11-03 01:49:58,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 375. [2022-11-03 01:49:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 256 states have (on average 1.44140625) internal successors, (369), 259 states have internal predecessors, (369), 94 states have call successors, (94), 24 states have call predecessors, (94), 24 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-03 01:49:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 556 transitions. [2022-11-03 01:49:58,593 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 556 transitions. Word has length 89 [2022-11-03 01:49:58,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:49:58,593 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 556 transitions. [2022-11-03 01:49:58,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 01:49:58,594 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 556 transitions. [2022-11-03 01:49:58,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 01:49:58,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:49:58,597 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:49:58,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:49:58,598 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:49:58,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:49:58,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1480359538, now seen corresponding path program 1 times [2022-11-03 01:49:58,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:49:58,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103840170] [2022-11-03 01:49:58,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:58,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:49:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:49:58,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:49:58,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103840170] [2022-11-03 01:49:58,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103840170] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:49:58,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233127230] [2022-11-03 01:49:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:49:58,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:49:58,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:49:58,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:49:58,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:49:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:49:59,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1080 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:49:59,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:49:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:49:59,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:49:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 01:49:59,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233127230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:49:59,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1944261862] [2022-11-03 01:49:59,229 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-03 01:49:59,229 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:49:59,230 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:49:59,230 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:49:59,230 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:50:50,935 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 01:50:51,231 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 450 for LOIs [2022-11-03 01:50:51,524 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:51:04,465 WARN L234 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:10,373 WARN L234 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:16,973 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 450 DAG size of output: 245 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:23,090 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 473 DAG size of output: 265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:29,674 WARN L234 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 464 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:45,667 WARN L234 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 498 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:51:52,660 WARN L234 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 508 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:52:17,030 WARN L234 SmtUtils]: Spent 22.97s on a formula simplification. DAG size of input: 589 DAG size of output: 455 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:52:35,344 WARN L234 SmtUtils]: Spent 16.55s on a formula simplification. DAG size of input: 591 DAG size of output: 331 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:10,947 WARN L234 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 549 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:17,239 WARN L234 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 580 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:17,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1944261862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:53:17,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:53:17,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-03 01:53:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146103361] [2022-11-03 01:53:17,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:53:17,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 01:53:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:53:17,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 01:53:17,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:53:17,250 INFO L87 Difference]: Start difference. First operand 375 states and 556 transitions. Second operand has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-03 01:53:38,763 WARN L234 SmtUtils]: Spent 19.90s on a formula simplification. DAG size of input: 537 DAG size of output: 442 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:53:44,711 WARN L234 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 394 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:11,673 WARN L234 SmtUtils]: Spent 9.64s on a formula simplification. DAG size of input: 574 DAG size of output: 428 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:54:25,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:54:25,484 INFO L93 Difference]: Finished difference Result 845 states and 1312 transitions. [2022-11-03 01:54:25,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 01:54:25,484 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 90 [2022-11-03 01:54:25,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:54:25,494 INFO L225 Difference]: With dead ends: 845 [2022-11-03 01:54:25,494 INFO L226 Difference]: Without dead ends: 533 [2022-11-03 01:54:25,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 202.2s TimeCoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 01:54:25,497 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 302 mSDsluCounter, 3452 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 2432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:54:25,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 3580 Invalid, 2432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 01:54:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-03 01:54:25,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 437. [2022-11-03 01:54:25,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 314 states have (on average 1.4904458598726114) internal successors, (468), 319 states have internal predecessors, (468), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (96), 94 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-03 01:54:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 661 transitions. [2022-11-03 01:54:25,825 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 661 transitions. Word has length 90 [2022-11-03 01:54:25,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:54:25,826 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 661 transitions. [2022-11-03 01:54:25,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 8 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-03 01:54:25,826 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 661 transitions. [2022-11-03 01:54:25,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 01:54:25,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:54:25,829 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:54:25,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 01:54:26,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:26,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:54:26,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:54:26,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1468419200, now seen corresponding path program 1 times [2022-11-03 01:54:26,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:54:26,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521199080] [2022-11-03 01:54:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:26,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:54:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:26,288 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:54:26,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:54:26,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521199080] [2022-11-03 01:54:26,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521199080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:54:26,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173768682] [2022-11-03 01:54:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:54:26,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:54:26,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:54:26,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:54:26,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:54:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:54:26,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 1186 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:54:26,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:54:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:54:26,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:54:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:54:26,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173768682] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:54:26,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1732793890] [2022-11-03 01:54:26,802 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2022-11-03 01:54:26,803 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:54:26,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:54:26,804 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:54:26,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:56:36,438 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 440 for LOIs [2022-11-03 01:56:36,724 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 434 for LOIs [2022-11-03 01:56:37,027 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 453 for LOIs [2022-11-03 01:56:37,357 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 233 for LOIs [2022-11-03 01:56:37,425 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-03 01:56:37,715 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:56:50,178 WARN L234 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 440 DAG size of output: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:56:55,831 WARN L234 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 463 DAG size of output: 259 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:57:10,354 WARN L234 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 464 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:57:26,315 WARN L234 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 498 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:57:33,443 WARN L234 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 508 DAG size of output: 311 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:57:50,041 WARN L234 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 543 DAG size of output: 422 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:57:58,853 WARN L234 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 545 DAG size of output: 424 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:06,591 WARN L234 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 565 DAG size of output: 329 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:12,101 WARN L234 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 561 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:27,805 WARN L234 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 541 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:43,220 WARN L234 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 522 DAG size of output: 324 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:58:43,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1732793890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:43,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:58:43,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [4, 4, 4] total 35 [2022-11-03 01:58:43,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005840939] [2022-11-03 01:58:43,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:43,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-03 01:58:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-03 01:58:43,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1070, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 01:58:43,227 INFO L87 Difference]: Start difference. First operand 437 states and 661 transitions. Second operand has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-03 01:59:08,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:08,609 INFO L93 Difference]: Finished difference Result 908 states and 1415 transitions. [2022-11-03 01:59:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 01:59:08,610 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 93 [2022-11-03 01:59:08,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:08,614 INFO L225 Difference]: With dead ends: 908 [2022-11-03 01:59:08,614 INFO L226 Difference]: Without dead ends: 596 [2022-11-03 01:59:08,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 134.1s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 01:59:08,617 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 144 mSDsluCounter, 4050 mSDsCounter, 0 mSdLazyCounter, 3558 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:08,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 4161 Invalid, 3577 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 3558 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2022-11-03 01:59:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-11-03 01:59:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 522. [2022-11-03 01:59:09,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 391 states have (on average 1.5166240409207161) internal successors, (593), 398 states have internal predecessors, (593), 102 states have call successors, (102), 28 states have call predecessors, (102), 28 states have return successors, (101), 97 states have call predecessors, (101), 101 states have call successors, (101) [2022-11-03 01:59:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 796 transitions. [2022-11-03 01:59:09,024 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 796 transitions. Word has length 93 [2022-11-03 01:59:09,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:09,024 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 796 transitions. [2022-11-03 01:59:09,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 10 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2022-11-03 01:59:09,025 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 796 transitions. [2022-11-03 01:59:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-03 01:59:09,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:09,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:09,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-03 01:59:09,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-03 01:59:09,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:09,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:09,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1953297325, now seen corresponding path program 1 times [2022-11-03 01:59:09,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:09,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706638961] [2022-11-03 01:59:09,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:09,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:09,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:59:09,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:09,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706638961] [2022-11-03 01:59:09,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706638961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:59:09,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135359193] [2022-11-03 01:59:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:09,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:09,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:09,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:09,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7be3846c-c82d-490d-9624-cac88873a686/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:59:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:09,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:59:09,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:59:09,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 01:59:09,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135359193] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:09,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912368622] [2022-11-03 01:59:09,883 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-03 01:59:09,883 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:59:09,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:59:09,884 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:59:09,885 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs