./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec6_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec6_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0 --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 e80e5ec358c01b9328a945ffeac50362818d778d67430de128e75eb1cc0d9bc1 --- 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-e04fb08 [2022-11-16 20:14:47,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:14:47,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:14:47,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:14:47,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:14:47,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:14:47,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:14:47,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:14:47,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:14:47,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:14:47,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:14:47,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:14:47,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:14:47,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:14:47,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:14:47,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:14:47,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:14:47,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:14:47,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:14:47,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:14:47,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:14:47,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:14:47,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:14:47,669 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:14:47,677 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:14:47,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:14:47,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:14:47,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:14:47,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:14:47,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:14:47,685 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:14:47,685 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:14:47,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:14:47,689 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:14:47,691 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:14:47,692 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:14:47,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:14:47,693 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:14:47,693 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:14:47,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:14:47,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:14:47,695 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 20:14:47,736 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:14:47,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:14:47,737 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:14:47,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:14:47,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:14:47,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:14:47,739 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:14:47,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:14:47,740 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:14:47,740 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:14:47,741 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:14:47,741 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:14:47,742 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:14:47,742 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:14:47,742 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:14:47,742 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:14:47,742 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:14:47,743 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:14:47,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:14:47,744 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 20:14:47,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:14:47,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 20:14:47,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:14:47,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:14:47,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:14:47,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:14:47,746 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 20:14:47,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:14:47,747 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:14:47,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:14:47,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:14:47,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:14:47,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:14:47,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:14:47,748 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:14:47,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:14:47,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:14:47,749 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:14:47,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:14:47,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:14:47,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:14:47,750 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_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e80e5ec358c01b9328a945ffeac50362818d778d67430de128e75eb1cc0d9bc1 [2022-11-16 20:14:48,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:14:48,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:14:48,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:14:48,092 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:14:48,093 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:14:48,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/product-lines/email_spec6_product26.cil.c [2022-11-16 20:14:48,162 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/data/20a442012/80e8a52d72484c70914b08e451feb055/FLAG6b3632061 [2022-11-16 20:14:48,737 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:14:48,737 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/sv-benchmarks/c/product-lines/email_spec6_product26.cil.c [2022-11-16 20:14:48,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/data/20a442012/80e8a52d72484c70914b08e451feb055/FLAG6b3632061 [2022-11-16 20:14:49,000 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/data/20a442012/80e8a52d72484c70914b08e451feb055 [2022-11-16 20:14:49,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:14:49,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:14:49,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:14:49,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:14:49,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:14:49,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:49,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2696e125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49, skipping insertion in model container [2022-11-16 20:14:49,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:49,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:14:49,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:14:49,726 WARN L229 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_880c2e85-4e45-4ae0-8251-65db48eec139/sv-benchmarks/c/product-lines/email_spec6_product26.cil.c[51398,51411] [2022-11-16 20:14:49,799 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:14:49,810 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:14:49,904 WARN L229 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_880c2e85-4e45-4ae0-8251-65db48eec139/sv-benchmarks/c/product-lines/email_spec6_product26.cil.c[51398,51411] [2022-11-16 20:14:49,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:14:49,949 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:14:49,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49 WrapperNode [2022-11-16 20:14:49,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:14:49,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:14:49,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:14:49,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:14:49,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,113 INFO L138 Inliner]: procedures = 132, calls = 232, calls flagged for inlining = 59, calls inlined = 56, statements flattened = 1084 [2022-11-16 20:14:50,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:14:50,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:14:50,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:14:50,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:14:50,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,176 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:14:50,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:14:50,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:14:50,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:14:50,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (1/1) ... [2022-11-16 20:14:50,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:14:50,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:14:50,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:14:50,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:14:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-16 20:14:50,276 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-16 20:14:50,276 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-16 20:14:50,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-16 20:14:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-16 20:14:50,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-16 20:14:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-16 20:14:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-16 20:14:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-16 20:14:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-16 20:14:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-16 20:14:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-16 20:14:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-16 20:14:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-16 20:14:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-16 20:14:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-16 20:14:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-16 20:14:50,305 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-16 20:14:50,305 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-16 20:14:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-16 20:14:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-16 20:14:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-16 20:14:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-16 20:14:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-16 20:14:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-16 20:14:50,306 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-11-16 20:14:50,306 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-11-16 20:14:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-16 20:14:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-16 20:14:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:14:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-16 20:14:50,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-16 20:14:50,307 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-16 20:14:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-16 20:14:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-16 20:14:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-16 20:14:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-16 20:14:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-16 20:14:50,308 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-16 20:14:50,308 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-16 20:14:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-16 20:14:50,309 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-16 20:14:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-16 20:14:50,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-16 20:14:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-16 20:14:50,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-16 20:14:50,309 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-16 20:14:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-16 20:14:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:14:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-16 20:14:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-16 20:14:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-16 20:14:50,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-16 20:14:50,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:14:50,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:14:50,582 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:14:50,585 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:14:51,721 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:14:52,329 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:14:52,330 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 20:14:52,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:14:52 BoogieIcfgContainer [2022-11-16 20:14:52,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:14:52,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:14:52,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:14:52,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:14:52,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:14:49" (1/3) ... [2022-11-16 20:14:52,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d89947e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:14:52, skipping insertion in model container [2022-11-16 20:14:52,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:14:49" (2/3) ... [2022-11-16 20:14:52,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d89947e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:14:52, skipping insertion in model container [2022-11-16 20:14:52,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:14:52" (3/3) ... [2022-11-16 20:14:52,346 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec6_product26.cil.c [2022-11-16 20:14:52,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:14:52,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:14:52,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:14:52,443 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;@4c47a972, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:14:52,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:14:52,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 212 states, 119 states have (on average 1.3025210084033614) internal successors, (155), 124 states have internal predecessors, (155), 66 states have call successors, (66), 25 states have call predecessors, (66), 25 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) [2022-11-16 20:14:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 20:14:52,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:14:52,467 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:14:52,467 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:14:52,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:14:52,473 INFO L85 PathProgramCache]: Analyzing trace with hash -654830289, now seen corresponding path program 1 times [2022-11-16 20:14:52,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:14:52,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562923771] [2022-11-16 20:14:52,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:14:52,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:14:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:14:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:14:52,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:14:52,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562923771] [2022-11-16 20:14:52,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562923771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:14:52,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:14:52,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 20:14:52,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490727804] [2022-11-16 20:14:52,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:14:52,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 20:14:52,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:14:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 20:14:52,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 20:14:52,989 INFO L87 Difference]: Start difference. First operand has 212 states, 119 states have (on average 1.3025210084033614) internal successors, (155), 124 states have internal predecessors, (155), 66 states have call successors, (66), 25 states have call predecessors, (66), 25 states have return successors, (66), 65 states have call predecessors, (66), 66 states have call successors, (66) Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 20:14:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:14:53,208 INFO L93 Difference]: Finished difference Result 332 states and 445 transitions. [2022-11-16 20:14:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 20:14:53,211 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 79 [2022-11-16 20:14:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:14:53,232 INFO L225 Difference]: With dead ends: 332 [2022-11-16 20:14:53,232 INFO L226 Difference]: Without dead ends: 209 [2022-11-16 20:14:53,241 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 [2022-11-16 20:14:53,244 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:14:53,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:14:53,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-16 20:14:53,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-11-16 20:14:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 117 states have (on average 1.2735042735042734) internal successors, (149), 121 states have internal predecessors, (149), 66 states have call successors, (66), 25 states have call predecessors, (66), 25 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-16 20:14:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 280 transitions. [2022-11-16 20:14:53,338 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 280 transitions. Word has length 79 [2022-11-16 20:14:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:14:53,346 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 280 transitions. [2022-11-16 20:14:53,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 20:14:53,347 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 280 transitions. [2022-11-16 20:14:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 20:14:53,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:14:53,351 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:14:53,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:14:53,351 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:14:53,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:14:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1923991463, now seen corresponding path program 1 times [2022-11-16 20:14:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:14:53,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880410042] [2022-11-16 20:14:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:14:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:14:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:14:53,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:14:53,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:14:53,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880410042] [2022-11-16 20:14:53,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880410042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:14:53,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:14:53,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:14:53,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816137247] [2022-11-16 20:14:53,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:14:53,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:14:53,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:14:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:14:53,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:14:53,768 INFO L87 Difference]: Start difference. First operand 209 states and 280 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 20:14:53,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:14:53,956 INFO L93 Difference]: Finished difference Result 328 states and 430 transitions. [2022-11-16 20:14:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:14:53,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 80 [2022-11-16 20:14:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:14:53,964 INFO L225 Difference]: With dead ends: 328 [2022-11-16 20:14:53,964 INFO L226 Difference]: Without dead ends: 211 [2022-11-16 20:14:53,970 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 [2022-11-16 20:14:53,972 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 0 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:14:53,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:14:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-11-16 20:14:54,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2022-11-16 20:14:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 119 states have (on average 1.26890756302521) internal successors, (151), 123 states have internal predecessors, (151), 66 states have call successors, (66), 25 states have call predecessors, (66), 25 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-16 20:14:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2022-11-16 20:14:54,015 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 80 [2022-11-16 20:14:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:14:54,017 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2022-11-16 20:14:54,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 20:14:54,017 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2022-11-16 20:14:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 20:14:54,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:14:54,029 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] [2022-11-16 20:14:54,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:14:54,030 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:14:54,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:14:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash -233619628, now seen corresponding path program 1 times [2022-11-16 20:14:54,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:14:54,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621278643] [2022-11-16 20:14:54,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:14:54,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:14:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:14:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:14:54,181 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:14:54,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621278643] [2022-11-16 20:14:54,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621278643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:14:54,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:14:54,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:14:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487122259] [2022-11-16 20:14:54,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:14:54,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:14:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:14:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:14:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:14:54,184 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 20:14:54,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:14:54,341 INFO L93 Difference]: Finished difference Result 457 states and 631 transitions. [2022-11-16 20:14:54,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:14:54,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 85 [2022-11-16 20:14:54,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:14:54,344 INFO L225 Difference]: With dead ends: 457 [2022-11-16 20:14:54,344 INFO L226 Difference]: Without dead ends: 264 [2022-11-16 20:14:54,345 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 [2022-11-16 20:14:54,346 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 59 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:14:54,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 499 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 20:14:54,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-16 20:14:54,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 259. [2022-11-16 20:14:54,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 153 states have (on average 1.34640522875817) internal successors, (206), 157 states have internal predecessors, (206), 80 states have call successors, (80), 25 states have call predecessors, (80), 25 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2022-11-16 20:14:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 365 transitions. [2022-11-16 20:14:54,366 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 365 transitions. Word has length 85 [2022-11-16 20:14:54,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:14:54,366 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 365 transitions. [2022-11-16 20:14:54,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 20:14:54,367 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 365 transitions. [2022-11-16 20:14:54,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-16 20:14:54,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:14:54,369 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] [2022-11-16 20:14:54,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:14:54,369 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:14:54,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:14:54,370 INFO L85 PathProgramCache]: Analyzing trace with hash 600183206, now seen corresponding path program 1 times [2022-11-16 20:14:54,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:14:54,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366103308] [2022-11-16 20:14:54,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:14:54,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:14:54,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:14:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:14:54,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:14:54,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366103308] [2022-11-16 20:14:54,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366103308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:14:54,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851986898] [2022-11-16 20:14:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:14:54,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:14:54,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:14:54,679 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:14:54,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:14:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:14:55,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:14:55,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:14:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:14:55,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:14:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:14:55,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851986898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:14:55,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [889408587] [2022-11-16 20:14:55,316 INFO L159 IcfgInterpreter]: Started Sifa with 73 locations of interest [2022-11-16 20:14:55,317 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:14:55,322 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:14:55,327 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:14:55,327 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:15:39,372 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-16 20:15:39,743 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 261 for LOIs [2022-11-16 20:15:41,627 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 241 for LOIs [2022-11-16 20:15:41,667 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 446 for LOIs [2022-11-16 20:15:41,972 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 263 for LOIs [2022-11-16 20:15:42,807 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing__wrappee__AutoResponder with input of size 270 for LOIs [2022-11-16 20:15:52,660 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 244 for LOIs [2022-11-16 20:15:52,700 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 473 for LOIs [2022-11-16 20:15:54,551 INFO L197 IcfgInterpreter]: Interpreting procedure isEncrypted with input of size 248 for LOIs [2022-11-16 20:15:54,626 INFO L197 IcfgInterpreter]: Interpreting procedure getClientAddressBookSize with input of size 233 for LOIs [2022-11-16 20:15:54,692 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:16:21,444 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 469 DAG size of output: 265 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:16:44,687 WARN L233 SmtUtils]: Spent 5.20s on a formula simplification. DAG size of input: 502 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:16:54,074 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:14,848 WARN L233 SmtUtils]: Spent 20.43s on a formula simplification. DAG size of input: 591 DAG size of output: 466 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:35,714 WARN L233 SmtUtils]: Spent 20.51s on a formula simplification. DAG size of input: 593 DAG size of output: 469 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:46,893 WARN L233 SmtUtils]: Spent 10.79s on a formula simplification. DAG size of input: 592 DAG size of output: 351 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:17:56,926 WARN L233 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 566 DAG size of output: 408 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:18:05,588 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 584 DAG size of output: 380 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:18:21,478 WARN L233 SmtUtils]: Spent 13.28s on a formula simplification. DAG size of input: 473 DAG size of output: 364 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:19:17,765 WARN L233 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 561 DAG size of output: 430 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:19:27,966 WARN L233 SmtUtils]: Spent 9.47s on a formula simplification. DAG size of input: 562 DAG size of output: 461 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:19:34,862 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 569 DAG size of output: 390 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:19:42,310 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 594 DAG size of output: 415 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:19:42,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [889408587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:19:42,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:19:42,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [4, 4, 4] total 57 [2022-11-16 20:19:42,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210632100] [2022-11-16 20:19:42,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:19:42,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-16 20:19:42,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:19:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-16 20:19:42,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=3050, Unknown=0, NotChecked=0, Total=3192 [2022-11-16 20:19:42,317 INFO L87 Difference]: Start difference. First operand 259 states and 365 transitions. Second operand has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-16 20:19:56,832 WARN L233 SmtUtils]: Spent 11.02s on a formula simplification. DAG size of input: 482 DAG size of output: 436 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:20:08,568 WARN L233 SmtUtils]: Spent 11.17s on a formula simplification. DAG size of input: 484 DAG size of output: 435 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:20:21,367 WARN L233 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 595 DAG size of output: 410 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:20:35,313 WARN L233 SmtUtils]: Spent 13.25s on a formula simplification. DAG size of input: 602 DAG size of output: 407 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:20:45,454 WARN L233 SmtUtils]: Spent 9.43s on a formula simplification. DAG size of input: 598 DAG size of output: 411 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:20:58,175 WARN L233 SmtUtils]: Spent 11.83s on a formula simplification. DAG size of input: 510 DAG size of output: 459 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:21:12,252 WARN L233 SmtUtils]: Spent 12.88s on a formula simplification. DAG size of input: 607 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:21:32,337 WARN L233 SmtUtils]: Spent 18.87s on a formula simplification. DAG size of input: 602 DAG size of output: 434 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:22:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:22:12,078 INFO L93 Difference]: Finished difference Result 626 states and 919 transitions. [2022-11-16 20:22:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-16 20:22:12,084 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) Word has length 86 [2022-11-16 20:22:12,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:22:12,087 INFO L225 Difference]: With dead ends: 626 [2022-11-16 20:22:12,087 INFO L226 Difference]: Without dead ends: 385 [2022-11-16 20:22:12,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 343.5s TimeCoverageRelationStatistics Valid=239, Invalid=4591, Unknown=0, NotChecked=0, Total=4830 [2022-11-16 20:22:12,091 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 333 mSDsluCounter, 6830 mSDsCounter, 0 mSdLazyCounter, 7580 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 7098 SdHoareTripleChecker+Invalid, 7620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 7580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:22:12,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 7098 Invalid, 7620 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [40 Valid, 7580 Invalid, 0 Unknown, 0 Unchecked, 33.1s Time] [2022-11-16 20:22:12,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-16 20:22:12,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 357. [2022-11-16 20:22:12,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 230 states have (on average 1.3478260869565217) internal successors, (310), 235 states have internal predecessors, (310), 94 states have call successors, (94), 34 states have call predecessors, (94), 32 states have return successors, (94), 89 states have call predecessors, (94), 93 states have call successors, (94) [2022-11-16 20:22:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 498 transitions. [2022-11-16 20:22:12,262 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 498 transitions. Word has length 86 [2022-11-16 20:22:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:22:12,263 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 498 transitions. [2022-11-16 20:22:12,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 31 states have internal predecessors, (44), 17 states have call successors, (19), 11 states have call predecessors, (19), 8 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2022-11-16 20:22:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 498 transitions. [2022-11-16 20:22:12,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 20:22:12,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:22:12,267 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:22:12,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 20:22:12,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:12,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:22:12,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:22:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash -852617590, now seen corresponding path program 1 times [2022-11-16 20:22:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:22:12,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302431222] [2022-11-16 20:22:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:22:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:12,629 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 20:22:12,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:22:12,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302431222] [2022-11-16 20:22:12,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302431222] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:22:12,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866027947] [2022-11-16 20:22:12,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:22:12,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:22:12,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:22:12,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:22:12,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 20:22:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:22:12,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:22:12,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:22:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 20:22:13,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:22:13,114 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 20:22:13,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866027947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:22:13,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1412819030] [2022-11-16 20:22:13,122 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2022-11-16 20:22:13,122 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:22:13,124 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:22:13,124 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:22:13,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:23:09,266 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-16 20:23:09,569 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 485 for LOIs [2022-11-16 20:23:13,527 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:23:35,082 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 485 DAG size of output: 254 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:24:01,563 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 502 DAG size of output: 318 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:24:10,812 WARN L233 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 512 DAG size of output: 381 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:24:31,064 WARN L233 SmtUtils]: Spent 19.93s on a formula simplification. DAG size of input: 593 DAG size of output: 459 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:24:43,964 WARN L233 SmtUtils]: Spent 12.56s on a formula simplification. DAG size of input: 595 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:24:50,388 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 334 DAG size of output: 332 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:24:57,361 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 566 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:25:14,646 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 570 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:25:24,056 WARN L233 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 584 DAG size of output: 387 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:25:24,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1412819030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:25:24,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:25:24,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [4, 4, 4] total 29 [2022-11-16 20:25:24,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401186084] [2022-11-16 20:25:24,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:25:24,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 20:25:24,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:25:24,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 20:25:24,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=718, Unknown=0, NotChecked=0, Total=812 [2022-11-16 20:25:24,067 INFO L87 Difference]: Start difference. First operand 357 states and 498 transitions. Second operand has 24 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-16 20:25:40,499 WARN L233 SmtUtils]: Spent 14.76s on a formula simplification. DAG size of input: 475 DAG size of output: 445 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:25:47,180 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 527 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:25:55,961 WARN L233 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 524 DAG size of output: 342 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:26:03,960 WARN L233 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 549 DAG size of output: 334 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:26:09,998 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 516 DAG size of output: 360 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:26:16,024 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 512 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:26:22,020 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 493 DAG size of output: 376 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:26:32,832 WARN L233 SmtUtils]: Spent 9.73s on a formula simplification. DAG size of input: 583 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:26:39,122 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 351 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:26:45,630 WARN L233 SmtUtils]: Spent 6.00s on a formula simplification. DAG size of input: 425 DAG size of output: 335 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:26:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:26:54,218 INFO L93 Difference]: Finished difference Result 695 states and 1012 transitions. [2022-11-16 20:26:54,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 20:26:54,220 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 92 [2022-11-16 20:26:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:26:54,223 INFO L225 Difference]: With dead ends: 695 [2022-11-16 20:26:54,223 INFO L226 Difference]: Without dead ends: 454 [2022-11-16 20:26:54,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 250 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 208.2s TimeCoverageRelationStatistics Valid=177, Invalid=1305, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 20:26:54,225 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 180 mSDsluCounter, 3322 mSDsCounter, 0 mSdLazyCounter, 2489 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 3569 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:26:54,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 3569 Invalid, 2516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 2489 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-16 20:26:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-11-16 20:26:54,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 371. [2022-11-16 20:26:54,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 242 states have (on average 1.3512396694214877) internal successors, (327), 247 states have internal predecessors, (327), 95 states have call successors, (95), 35 states have call predecessors, (95), 33 states have return successors, (95), 90 states have call predecessors, (95), 94 states have call successors, (95) [2022-11-16 20:26:54,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 517 transitions. [2022-11-16 20:26:54,444 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 517 transitions. Word has length 92 [2022-11-16 20:26:54,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:26:54,444 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 517 transitions. [2022-11-16 20:26:54,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 2.473684210526316) internal successors, (47), 17 states have internal predecessors, (47), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-16 20:26:54,445 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 517 transitions. [2022-11-16 20:26:54,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-16 20:26:54,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:26:54,447 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:26:54,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 20:26:54,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:26:54,653 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:26:54,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:26:54,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1225697090, now seen corresponding path program 1 times [2022-11-16 20:26:54,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:26:54,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388221682] [2022-11-16 20:26:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:26:54,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:26:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:26:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:26:54,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:26:54,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388221682] [2022-11-16 20:26:54,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388221682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:26:54,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976082961] [2022-11-16 20:26:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:26:54,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:26:54,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:26:54,827 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:26:54,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_880c2e85-4e45-4ae0-8251-65db48eec139/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 20:26:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:26:55,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1228 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:26:55,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:26:55,186 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:26:55,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:26:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 20:26:55,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976082961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:26:55,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [20344257] [2022-11-16 20:26:55,261 INFO L159 IcfgInterpreter]: Started Sifa with 82 locations of interest [2022-11-16 20:26:55,261 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:26:55,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:26:55,262 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:26:55,262 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs