./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 14dde7567748bafe076b052fc50547f9c42c454af1c5c326a7b2a07549e9af32 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 20:49:51,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:49:51,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:49:51,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:49:51,765 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:49:51,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:49:51,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:49:51,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:49:51,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:49:51,787 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:49:51,788 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:49:51,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:49:51,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:49:51,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:49:51,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:49:51,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:49:51,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:49:51,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:49:51,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:49:51,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:49:51,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:49:51,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:49:51,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:49:51,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:49:51,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:49:51,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:49:51,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:49:51,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:49:51,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:49:51,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:49:51,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:49:51,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:49:51,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:49:51,827 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:49:51,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:49:51,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:49:51,830 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:49:51,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:49:51,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:49:51,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:49:51,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:49:51,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:49:51,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:49:51,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:49:51,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:49:51,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:49:51,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:49:51,862 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:49:51,863 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:49:51,863 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:49:51,863 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:49:51,863 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:49:51,863 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:49:51,864 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:49:51,864 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:49:51,864 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:49:51,864 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:49:51,864 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:49:51,865 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:49:51,865 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:49:51,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:49:51,866 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:49:51,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:49:51,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:49:51,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:49:51,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:49:51,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:49:51,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:49:51,867 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:49:51,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:49:51,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:49:51,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:49:51,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:49:51,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:49:51,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:49:51,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:49:51,869 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:49:51,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:49:51,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:49:51,870 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:49:51,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:49:51,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:49:51,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:49:51,870 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_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14dde7567748bafe076b052fc50547f9c42c454af1c5c326a7b2a07549e9af32 [2022-11-20 20:49:52,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:49:52,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:49:52,237 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:49:52,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:49:52,263 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:49:52,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/email_spec6_product16.cil.c [2022-11-20 20:49:55,257 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:49:55,578 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:49:55,579 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c [2022-11-20 20:49:55,604 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/data/7bc4734bf/220331ebea974f7d915f47311e0a5dc7/FLAG5539867db [2022-11-20 20:49:55,622 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/data/7bc4734bf/220331ebea974f7d915f47311e0a5dc7 [2022-11-20 20:49:55,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:49:55,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:49:55,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:49:55,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:49:55,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:49:55,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:49:55" (1/1) ... [2022-11-20 20:49:55,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d0e995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:55, skipping insertion in model container [2022-11-20 20:49:55,645 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:49:55" (1/1) ... [2022-11-20 20:49:55,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:49:55,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:49:56,262 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c[39829,39842] [2022-11-20 20:49:56,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:49:56,432 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:49:56,535 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/sv-benchmarks/c/product-lines/email_spec6_product16.cil.c[39829,39842] [2022-11-20 20:49:56,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:49:56,627 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:49:56,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56 WrapperNode [2022-11-20 20:49:56,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:49:56,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:49:56,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:49:56,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:49:56,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,724 INFO L138 Inliner]: procedures = 126, calls = 203, calls flagged for inlining = 55, calls inlined = 50, statements flattened = 969 [2022-11-20 20:49:56,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:49:56,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:49:56,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:49:56,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:49:56,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,768 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,773 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:49:56,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:49:56,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:49:56,785 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:49:56,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (1/1) ... [2022-11-20 20:49:56,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:49:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:49:56,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:49:56,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:49:56,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-20 20:49:56,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-20 20:49:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-20 20:49:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-20 20:49:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-20 20:49:56,871 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-20 20:49:56,871 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-20 20:49:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-20 20:49:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-20 20:49:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-20 20:49:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-20 20:49:56,872 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-20 20:49:56,872 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-20 20:49:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-20 20:49:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-20 20:49:56,873 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-20 20:49:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-20 20:49:56,873 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-20 20:49:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-20 20:49:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:49:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-20 20:49:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-20 20:49:56,874 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-20 20:49:56,874 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-20 20:49:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-20 20:49:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-20 20:49:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-20 20:49:56,875 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-20 20:49:56,875 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-20 20:49:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-20 20:49:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-20 20:49:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-20 20:49:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-20 20:49:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-20 20:49:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-20 20:49:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-20 20:49:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:49:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-20 20:49:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-20 20:49:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:49:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:49:57,078 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:49:57,092 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:49:57,961 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:49:58,464 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:49:58,465 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:49:58,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:49:58 BoogieIcfgContainer [2022-11-20 20:49:58,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:49:58,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:49:58,472 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:49:58,476 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:49:58,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:49:55" (1/3) ... [2022-11-20 20:49:58,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ab3b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:49:58, skipping insertion in model container [2022-11-20 20:49:58,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:49:56" (2/3) ... [2022-11-20 20:49:58,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ab3b27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:49:58, skipping insertion in model container [2022-11-20 20:49:58,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:49:58" (3/3) ... [2022-11-20 20:49:58,481 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product16.cil.c [2022-11-20 20:49:58,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:49:58,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:49:58,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:49:58,581 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;@18fd7668, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:49:58,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:49:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 98 states have (on average 1.346938775510204) internal successors, (132), 102 states have internal predecessors, (132), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-20 20:49:58,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 20:49:58,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:58,604 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:49:58,606 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1201488115, now seen corresponding path program 1 times [2022-11-20 20:49:58,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:49:58,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236358168] [2022-11-20 20:49:58,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:58,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:49:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:49:59,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:49:59,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236358168] [2022-11-20 20:49:59,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236358168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:59,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:49:59,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:49:59,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407770706] [2022-11-20 20:49:59,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:59,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:49:59,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:49:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:49:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:49:59,144 INFO L87 Difference]: Start difference. First operand has 167 states, 98 states have (on average 1.346938775510204) internal successors, (132), 102 states have internal predecessors, (132), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:49:59,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:59,301 INFO L93 Difference]: Finished difference Result 251 states and 338 transitions. [2022-11-20 20:49:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:49:59,305 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 72 [2022-11-20 20:49:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:59,323 INFO L225 Difference]: With dead ends: 251 [2022-11-20 20:49:59,323 INFO L226 Difference]: Without dead ends: 164 [2022-11-20 20:49:59,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:49:59,335 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:59,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 196 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:49:59,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-20 20:49:59,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-11-20 20:49:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 96 states have (on average 1.3125) internal successors, (126), 99 states have internal predecessors, (126), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-20 20:49:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 223 transitions. [2022-11-20 20:49:59,401 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 223 transitions. Word has length 72 [2022-11-20 20:49:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:59,403 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 223 transitions. [2022-11-20 20:49:59,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:49:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 223 transitions. [2022-11-20 20:49:59,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 20:49:59,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:59,408 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:49:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:49:59,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:59,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash -711036879, now seen corresponding path program 1 times [2022-11-20 20:49:59,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:49:59,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641745037] [2022-11-20 20:49:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:59,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:49:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:59,713 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:49:59,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:49:59,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641745037] [2022-11-20 20:49:59,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641745037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:59,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:49:59,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:49:59,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982904925] [2022-11-20 20:49:59,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:59,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:49:59,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:49:59,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:49:59,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:49:59,718 INFO L87 Difference]: Start difference. First operand 164 states and 223 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:49:59,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:49:59,829 INFO L93 Difference]: Finished difference Result 247 states and 326 transitions. [2022-11-20 20:49:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:49:59,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 73 [2022-11-20 20:49:59,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:49:59,832 INFO L225 Difference]: With dead ends: 247 [2022-11-20 20:49:59,832 INFO L226 Difference]: Without dead ends: 166 [2022-11-20 20:49:59,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:49:59,835 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:49:59,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:49:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-20 20:49:59,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-20 20:49:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 98 states have (on average 1.3061224489795917) internal successors, (128), 101 states have internal predecessors, (128), 49 states have call successors, (49), 18 states have call predecessors, (49), 18 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-20 20:49:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 225 transitions. [2022-11-20 20:49:59,855 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 225 transitions. Word has length 73 [2022-11-20 20:49:59,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:49:59,855 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 225 transitions. [2022-11-20 20:49:59,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:49:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 225 transitions. [2022-11-20 20:49:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 20:49:59,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:49:59,859 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] [2022-11-20 20:49:59,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:49:59,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:49:59,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:49:59,861 INFO L85 PathProgramCache]: Analyzing trace with hash -944095922, now seen corresponding path program 1 times [2022-11-20 20:49:59,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:49:59,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609048610] [2022-11-20 20:49:59,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:49:59,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:49:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:49:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:49:59,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:49:59,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609048610] [2022-11-20 20:49:59,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609048610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:49:59,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:49:59,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:49:59,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188738403] [2022-11-20 20:49:59,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:49:59,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:49:59,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:49:59,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:49:59,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:49:59,986 INFO L87 Difference]: Start difference. First operand 166 states and 225 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:50:00,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:50:00,084 INFO L93 Difference]: Finished difference Result 362 states and 509 transitions. [2022-11-20 20:50:00,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:50:00,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 78 [2022-11-20 20:50:00,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:50:00,087 INFO L225 Difference]: With dead ends: 362 [2022-11-20 20:50:00,087 INFO L226 Difference]: Without dead ends: 214 [2022-11-20 20:50:00,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:50:00,090 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 57 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:50:00,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 393 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:50:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-20 20:50:00,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 209. [2022-11-20 20:50:00,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 130 states have (on average 1.3923076923076922) internal successors, (181), 133 states have internal predecessors, (181), 60 states have call successors, (60), 18 states have call predecessors, (60), 18 states have return successors, (59), 59 states have call predecessors, (59), 59 states have call successors, (59) [2022-11-20 20:50:00,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 300 transitions. [2022-11-20 20:50:00,114 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 300 transitions. Word has length 78 [2022-11-20 20:50:00,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:50:00,114 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 300 transitions. [2022-11-20 20:50:00,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-20 20:50:00,115 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 300 transitions. [2022-11-20 20:50:00,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 20:50:00,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:50:00,118 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, 1] [2022-11-20 20:50:00,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 20:50:00,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:50:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:50:00,119 INFO L85 PathProgramCache]: Analyzing trace with hash -840321852, now seen corresponding path program 1 times [2022-11-20 20:50:00,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:50:00,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771717438] [2022-11-20 20:50:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:50:00,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:50:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:50:00,391 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:50:00,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:50:00,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771717438] [2022-11-20 20:50:00,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771717438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:50:00,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104578745] [2022-11-20 20:50:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:50:00,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:50:00,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:50:00,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:50:00,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:50:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:50:00,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1007 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:50:00,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:50:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:50:00,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:50:00,979 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:50:00,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104578745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:50:00,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [688967232] [2022-11-20 20:50:01,008 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-20 20:50:01,008 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:50:01,015 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:50:01,021 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:50:01,022 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:50:31,059 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-20 20:50:31,389 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 20:50:31,726 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 258 for LOIs [2022-11-20 20:50:33,983 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 238 for LOIs [2022-11-20 20:50:34,051 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 260 for LOIs [2022-11-20 20:50:51,223 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 455 for LOIs [2022-11-20 20:50:51,780 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 476 for LOIs [2022-11-20 20:50:53,650 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 245 for LOIs [2022-11-20 20:50:53,689 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:51:26,895 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 480 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:51:46,201 WARN L233 SmtUtils]: Spent 7.81s on a formula simplification. DAG size of input: 512 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:51:57,103 WARN L233 SmtUtils]: Spent 10.58s on a formula simplification. DAG size of input: 581 DAG size of output: 331 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:52:07,963 WARN L233 SmtUtils]: Spent 10.54s on a formula simplification. DAG size of input: 583 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:52:21,156 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 476 DAG size of output: 267 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:52:50,150 WARN L233 SmtUtils]: Spent 11.70s on a formula simplification. DAG size of input: 455 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:53:02,500 WARN L233 SmtUtils]: Spent 11.85s on a formula simplification. DAG size of input: 474 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:53:25,121 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 573 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:53:31,849 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 574 DAG size of output: 378 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:53:39,405 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 582 DAG size of output: 395 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:53:41,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [688967232] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:53:41,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:53:41,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [4, 4, 4] total 51 [2022-11-20 20:53:41,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813265589] [2022-11-20 20:53:41,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:53:41,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-20 20:53:41,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:53:41,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-20 20:53:41,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=2417, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 20:53:41,672 INFO L87 Difference]: Start difference. First operand 209 states and 300 transitions. Second operand has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 28 states have internal predecessors, (40), 15 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-20 20:54:23,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:23,755 INFO L93 Difference]: Finished difference Result 543 states and 828 transitions. [2022-11-20 20:54:23,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 20:54:23,756 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 28 states have internal predecessors, (40), 15 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) Word has length 79 [2022-11-20 20:54:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:23,760 INFO L225 Difference]: With dead ends: 543 [2022-11-20 20:54:23,760 INFO L226 Difference]: Without dead ends: 352 [2022-11-20 20:54:23,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 189 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 186.8s TimeCoverageRelationStatistics Valid=188, Invalid=3234, Unknown=0, NotChecked=0, Total=3422 [2022-11-20 20:54:23,766 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 177 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 5540 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 4954 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:23,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 4954 Invalid, 5560 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [20 Valid, 5540 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2022-11-20 20:54:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-11-20 20:54:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 301. [2022-11-20 20:54:23,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 204 states have (on average 1.4362745098039216) internal successors, (293), 208 states have internal predecessors, (293), 72 states have call successors, (72), 25 states have call predecessors, (72), 24 states have return successors, (72), 69 states have call predecessors, (72), 71 states have call successors, (72) [2022-11-20 20:54:23,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 437 transitions. [2022-11-20 20:54:23,919 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 437 transitions. Word has length 79 [2022-11-20 20:54:23,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:23,920 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 437 transitions. [2022-11-20 20:54:23,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 28 states have internal predecessors, (40), 15 states have call successors, (17), 9 states have call predecessors, (17), 7 states have return successors, (15), 13 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-20 20:54:23,921 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 437 transitions. [2022-11-20 20:54:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-20 20:54:23,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:23,925 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:23,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:54:24,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:54:24,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:24,136 INFO L85 PathProgramCache]: Analyzing trace with hash 83716972, now seen corresponding path program 1 times [2022-11-20 20:54:24,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:24,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169650702] [2022-11-20 20:54:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:24,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:54:24,243 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:24,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169650702] [2022-11-20 20:54:24,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169650702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:54:24,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:54:24,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 20:54:24,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419025244] [2022-11-20 20:54:24,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:54:24,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 20:54:24,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:54:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 20:54:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:24,245 INFO L87 Difference]: Start difference. First operand 301 states and 437 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-11-20 20:54:24,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:54:24,632 INFO L93 Difference]: Finished difference Result 716 states and 1080 transitions. [2022-11-20 20:54:24,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 20:54:24,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 84 [2022-11-20 20:54:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:54:24,636 INFO L225 Difference]: With dead ends: 716 [2022-11-20 20:54:24,636 INFO L226 Difference]: Without dead ends: 441 [2022-11-20 20:54:24,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 20:54:24,638 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 55 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:54:24,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 411 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:54:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-20 20:54:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 434. [2022-11-20 20:54:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 312 states have (on average 1.5064102564102564) internal successors, (470), 316 states have internal predecessors, (470), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (97), 94 states have call predecessors, (97), 96 states have call successors, (97) [2022-11-20 20:54:24,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 664 transitions. [2022-11-20 20:54:24,846 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 664 transitions. Word has length 84 [2022-11-20 20:54:24,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:54:24,847 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 664 transitions. [2022-11-20 20:54:24,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2022-11-20 20:54:24,847 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 664 transitions. [2022-11-20 20:54:24,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-20 20:54:24,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:54:24,851 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:54:24,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 20:54:24,851 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:54:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:54:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash 716444735, now seen corresponding path program 1 times [2022-11-20 20:54:24,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:54:24,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994696405] [2022-11-20 20:54:24,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:24,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:54:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:24,981 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:54:24,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:54:24,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994696405] [2022-11-20 20:54:24,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994696405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:54:24,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973900723] [2022-11-20 20:54:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:54:24,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:54:24,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:54:24,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:54:24,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:54:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:54:25,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1037 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:54:25,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:54:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:54:25,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:54:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 20:54:25,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973900723] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:54:25,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2035607266] [2022-11-20 20:54:25,392 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2022-11-20 20:54:25,393 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:54:25,393 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:54:25,394 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:54:25,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:55:12,057 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-20 20:55:12,344 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 20:55:12,631 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:55:48,026 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 480 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:56:07,307 WARN L233 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 512 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:56:23,333 WARN L233 SmtUtils]: Spent 15.71s on a formula simplification. DAG size of input: 583 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:56:37,807 WARN L233 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 566 DAG size of output: 347 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:56:45,032 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 570 DAG size of output: 368 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:56:54,805 WARN L233 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 570 DAG size of output: 428 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:01,723 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 574 DAG size of output: 354 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:09,026 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 553 DAG size of output: 382 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:19,952 WARN L233 SmtUtils]: Spent 10.44s on a formula simplification. DAG size of input: 584 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:19,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2035607266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:57:19,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:57:19,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [4, 4, 4] total 30 [2022-11-20 20:57:19,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040154435] [2022-11-20 20:57:19,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:57:19,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 20:57:19,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:57:19,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 20:57:19,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=758, Unknown=0, NotChecked=0, Total=870 [2022-11-20 20:57:19,963 INFO L87 Difference]: Start difference. First operand 434 states and 664 transitions. Second operand has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 20:57:32,669 WARN L233 SmtUtils]: Spent 11.11s on a formula simplification. DAG size of input: 495 DAG size of output: 414 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:38,889 WARN L233 SmtUtils]: Spent 6.01s on a formula simplification. DAG size of input: 515 DAG size of output: 371 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:44,523 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 497 DAG size of output: 358 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:50,029 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 472 DAG size of output: 366 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:57:55,580 WARN L233 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 465 DAG size of output: 380 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:01,819 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 443 DAG size of output: 419 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:07,446 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 481 DAG size of output: 373 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:16,036 WARN L233 SmtUtils]: Spent 7.56s on a formula simplification. DAG size of input: 514 DAG size of output: 405 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:23,783 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 557 DAG size of output: 375 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:58:30,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:58:30,943 INFO L93 Difference]: Finished difference Result 824 states and 1291 transitions. [2022-11-20 20:58:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-20 20:58:30,943 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 85 [2022-11-20 20:58:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:58:30,947 INFO L225 Difference]: With dead ends: 824 [2022-11-20 20:58:30,947 INFO L226 Difference]: Without dead ends: 543 [2022-11-20 20:58:30,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 187.6s TimeCoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 20:58:30,950 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 249 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 3017 SdHoareTripleChecker+Invalid, 2207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:58:30,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 3017 Invalid, 2207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [28 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2022-11-20 20:58:30,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-11-20 20:58:31,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 466. [2022-11-20 20:58:31,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 340 states have (on average 1.5029411764705882) internal successors, (511), 346 states have internal predecessors, (511), 100 states have call successors, (100), 26 states have call predecessors, (100), 25 states have return successors, (100), 95 states have call predecessors, (100), 99 states have call successors, (100) [2022-11-20 20:58:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 711 transitions. [2022-11-20 20:58:31,275 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 711 transitions. Word has length 85 [2022-11-20 20:58:31,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:58:31,276 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 711 transitions. [2022-11-20 20:58:31,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 2.263157894736842) internal successors, (43), 18 states have internal predecessors, (43), 8 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-11-20 20:58:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 711 transitions. [2022-11-20 20:58:31,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 20:58:31,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:58:31,279 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:58:31,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 20:58:31,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 20:58:31,486 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:58:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:58:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1208627416, now seen corresponding path program 1 times [2022-11-20 20:58:31,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:58:31,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446229286] [2022-11-20 20:58:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:31,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:58:31,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:31,687 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:58:31,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:58:31,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446229286] [2022-11-20 20:58:31,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446229286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:58:31,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51737584] [2022-11-20 20:58:31,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:58:31,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:58:31,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:58:31,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:58:31,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:58:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:58:32,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 20:58:32,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:58:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:58:32,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:58:32,118 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 20:58:32,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51737584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:58:32,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1741688026] [2022-11-20 20:58:32,122 INFO L159 IcfgInterpreter]: Started Sifa with 75 locations of interest [2022-11-20 20:58:32,123 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:58:32,123 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:58:32,124 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:58:32,124 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:00:26,436 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-20 21:00:26,719 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 438 for LOIs [2022-11-20 21:00:27,017 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 438 for LOIs [2022-11-20 21:00:27,307 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 282 for LOIs [2022-11-20 21:00:27,433 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 445 for LOIs [2022-11-20 21:00:27,718 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:01:03,154 WARN L233 SmtUtils]: Spent 5.07s on a formula simplification. DAG size of input: 480 DAG size of output: 310 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:01:22,307 WARN L233 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 512 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:01:31,832 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 583 DAG size of output: 303 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:01:39,085 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 585 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:00,869 WARN L233 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 545 DAG size of output: 404 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:16,244 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 526 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:16,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1741688026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:02:16,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:02:16,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [4, 4, 4] total 34 [2022-11-20 21:02:16,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4585744] [2022-11-20 21:02:16,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:02:16,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 21:02:16,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:02:16,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 21:02:16,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1017, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 21:02:16,251 INFO L87 Difference]: Start difference. First operand 466 states and 711 transitions. Second operand has 29 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-20 21:02:23,214 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 488 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:28,734 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 488 DAG size of output: 357 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:34,328 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 492 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:39,961 WARN L233 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 494 DAG size of output: 364 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:02:47,908 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 498 DAG size of output: 350 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 21:03:04,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:03:04,582 INFO L93 Difference]: Finished difference Result 860 states and 1344 transitions. [2022-11-20 21:03:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-20 21:03:04,584 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 88 [2022-11-20 21:03:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:03:04,588 INFO L225 Difference]: With dead ends: 860 [2022-11-20 21:03:04,588 INFO L226 Difference]: Without dead ends: 579 [2022-11-20 21:03:04,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 142.5s TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 21:03:04,591 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 209 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 3171 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 3202 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 3171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-20 21:03:04,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 3202 Invalid, 3191 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 3171 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-11-20 21:03:04,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-11-20 21:03:04,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 506. [2022-11-20 21:03:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 372 states have (on average 1.4946236559139785) internal successors, (556), 380 states have internal predecessors, (556), 105 states have call successors, (105), 29 states have call predecessors, (105), 28 states have return successors, (105), 98 states have call predecessors, (105), 104 states have call successors, (105) [2022-11-20 21:03:04,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 766 transitions. [2022-11-20 21:03:04,986 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 766 transitions. Word has length 88 [2022-11-20 21:03:04,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:03:04,987 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 766 transitions. [2022-11-20 21:03:04,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 19 states have (on average 2.263157894736842) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-20 21:03:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 766 transitions. [2022-11-20 21:03:04,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 21:03:04,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:03:04,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:03:05,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:03:05,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 21:03:05,198 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:03:05,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:03:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1693430152, now seen corresponding path program 1 times [2022-11-20 21:03:05,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:03:05,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168625177] [2022-11-20 21:03:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:03:05,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:03:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:03:05,351 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 21:03:05,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:03:05,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168625177] [2022-11-20 21:03:05,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168625177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:03:05,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231497347] [2022-11-20 21:03:05,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:03:05,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:03:05,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:03:05,355 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:03:05,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d8467cb-3078-44d9-a8cd-19ceb43c9e0b/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:03:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:03:05,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1048 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 21:03:05,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:03:05,694 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 21:03:05,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:03:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 21:03:05,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231497347] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:03:05,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1648495751] [2022-11-20 21:03:05,784 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-20 21:03:05,785 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:03:05,786 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:03:05,786 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:03:05,787 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs