./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS --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 6fc432013ed2168eea9a323e37470d64fe5b972a8b4d9d4e2e5fdd67cd32ffed --- 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-8393723 [2022-11-19 06:51:25,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:51:25,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:51:25,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:51:25,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:51:25,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:51:25,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:51:25,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:51:25,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:51:25,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:51:25,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:51:25,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:51:25,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:51:25,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:51:25,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:51:25,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:51:25,148 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:51:25,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:51:25,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:51:25,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:51:25,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:51:25,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:51:25,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:51:25,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:51:25,172 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:51:25,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:51:25,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:51:25,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:51:25,179 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:51:25,180 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:51:25,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:51:25,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:51:25,182 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:51:25,183 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:51:25,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:51:25,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:51:25,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:51:25,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:51:25,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:51:25,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:51:25,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:51:25,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:51:25,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:51:25,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:51:25,210 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:51:25,211 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:51:25,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:51:25,212 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:51:25,212 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:51:25,212 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:51:25,213 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:51:25,213 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:51:25,213 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:51:25,214 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:51:25,214 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:51:25,214 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:51:25,214 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:51:25,215 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:51:25,215 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:51:25,215 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:51:25,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:51:25,217 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:51:25,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:51:25,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:51:25,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:51:25,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:51:25,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:51:25,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:51:25,219 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:51:25,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:51:25,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:51:25,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:51:25,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:51:25,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:51:25,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:51:25,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:51:25,221 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:51:25,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:51:25,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:51:25,222 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:51:25,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:51:25,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:51:25,223 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:51:25,224 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_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fc432013ed2168eea9a323e37470d64fe5b972a8b4d9d4e2e5fdd67cd32ffed [2022-11-19 06:51:25,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:51:25,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:51:25,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:51:25,603 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:51:25,605 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:51:25,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec9_product28.cil.c [2022-11-19 06:51:25,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/data/b5514fcdc/dcd9588152b441ac9f23563253093ca3/FLAG89635dbaf [2022-11-19 06:51:26,295 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:51:26,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c [2022-11-19 06:51:26,334 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/data/b5514fcdc/dcd9588152b441ac9f23563253093ca3/FLAG89635dbaf [2022-11-19 06:51:26,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/data/b5514fcdc/dcd9588152b441ac9f23563253093ca3 [2022-11-19 06:51:26,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:51:26,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:51:26,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:26,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:51:26,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:51:26,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:26" (1/1) ... [2022-11-19 06:51:26,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb00836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:26, skipping insertion in model container [2022-11-19 06:51:26,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:26" (1/1) ... [2022-11-19 06:51:26,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:51:26,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:51:27,351 WARN L234 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_15a84495-9302-42ba-8a3d-58736a5a1026/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c[63802,63815] [2022-11-19 06:51:27,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:27,366 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:51:27,447 WARN L234 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_15a84495-9302-42ba-8a3d-58736a5a1026/sv-benchmarks/c/product-lines/email_spec9_product28.cil.c[63802,63815] [2022-11-19 06:51:27,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:27,485 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:51:27,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27 WrapperNode [2022-11-19 06:51:27,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:27,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:27,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:51:27,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:51:27,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,580 INFO L138 Inliner]: procedures = 129, calls = 213, calls flagged for inlining = 56, calls inlined = 46, statements flattened = 868 [2022-11-19 06:51:27,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:27,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:51:27,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:51:27,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:51:27,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,628 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:51:27,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:51:27,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:51:27,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:51:27,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (1/1) ... [2022-11-19 06:51:27,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:51:27,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:27,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:51:27,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:51:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 06:51:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 06:51:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 06:51:27,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 06:51:27,732 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 06:51:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 06:51:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 06:51:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 06:51:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 06:51:27,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 06:51:27,733 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 06:51:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 06:51:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 06:51:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 06:51:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 06:51:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 06:51:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 06:51:27,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 06:51:27,734 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 06:51:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 06:51:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 06:51:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 06:51:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 06:51:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 06:51:27,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 06:51:27,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:51:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 06:51:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 06:51:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 06:51:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 06:51:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 06:51:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 06:51:27,736 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 06:51:27,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 06:51:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 06:51:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 06:51:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 06:51:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 06:51:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 06:51:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 06:51:27,737 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 06:51:27,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 06:51:27,738 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 06:51:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 06:51:27,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:51:27,738 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 06:51:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 06:51:27,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:51:27,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:51:27,958 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:51:27,960 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:51:29,045 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:51:29,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:51:29,503 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:51:29,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:29 BoogieIcfgContainer [2022-11-19 06:51:29,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:51:29,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:51:29,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:51:29,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:51:29,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:51:26" (1/3) ... [2022-11-19 06:51:29,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a7a581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:29, skipping insertion in model container [2022-11-19 06:51:29,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:27" (2/3) ... [2022-11-19 06:51:29,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a7a581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:29, skipping insertion in model container [2022-11-19 06:51:29,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:29" (3/3) ... [2022-11-19 06:51:29,518 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec9_product28.cil.c [2022-11-19 06:51:29,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:51:29,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:51:29,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:51:29,617 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;@766d486e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:51:29,618 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:51:29,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-19 06:51:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 06:51:29,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:29,637 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:29,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash -237789091, now seen corresponding path program 1 times [2022-11-19 06:51:29,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:29,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529827526] [2022-11-19 06:51:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:29,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:51:30,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:30,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529827526] [2022-11-19 06:51:30,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529827526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:30,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:30,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:30,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33789201] [2022-11-19 06:51:30,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:30,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:51:30,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:30,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:51:30,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:51:30,194 INFO L87 Difference]: Start difference. First operand has 180 states, 106 states have (on average 1.3396226415094339) internal successors, (142), 110 states have internal predecessors, (142), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:51:30,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:30,364 INFO L93 Difference]: Finished difference Result 277 states and 362 transitions. [2022-11-19 06:51:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:51:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 61 [2022-11-19 06:51:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:30,384 INFO L225 Difference]: With dead ends: 277 [2022-11-19 06:51:30,384 INFO L226 Difference]: Without dead ends: 177 [2022-11-19 06:51:30,392 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 [2022-11-19 06:51:30,398 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:30,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 208 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:51:30,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-19 06:51:30,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-19 06:51:30,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 107 states have internal predecessors, (136), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-19 06:51:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 235 transitions. [2022-11-19 06:51:30,486 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 235 transitions. Word has length 61 [2022-11-19 06:51:30,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:30,491 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 235 transitions. [2022-11-19 06:51:30,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:51:30,492 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 235 transitions. [2022-11-19 06:51:30,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-19 06:51:30,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:30,498 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:30,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:51:30,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:30,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:30,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2041869761, now seen corresponding path program 1 times [2022-11-19 06:51:30,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:30,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700885074] [2022-11-19 06:51:30,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:30,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:51:30,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:30,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700885074] [2022-11-19 06:51:30,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700885074] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:30,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:30,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:30,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938638025] [2022-11-19 06:51:30,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:30,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:30,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:30,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:30,849 INFO L87 Difference]: Start difference. First operand 177 states and 235 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:51:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:31,015 INFO L93 Difference]: Finished difference Result 273 states and 350 transitions. [2022-11-19 06:51:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:31,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 62 [2022-11-19 06:51:31,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:31,022 INFO L225 Difference]: With dead ends: 273 [2022-11-19 06:51:31,022 INFO L226 Difference]: Without dead ends: 179 [2022-11-19 06:51:31,025 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 [2022-11-19 06:51:31,027 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:31,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 409 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:51:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-19 06:51:31,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-11-19 06:51:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 109 states have internal predecessors, (138), 50 states have call successors, (50), 22 states have call predecessors, (50), 22 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-19 06:51:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-11-19 06:51:31,055 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 62 [2022-11-19 06:51:31,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:31,056 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-11-19 06:51:31,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:51:31,057 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-11-19 06:51:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 06:51:31,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:31,069 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] [2022-11-19 06:51:31,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:51:31,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1503020543, now seen corresponding path program 1 times [2022-11-19 06:51:31,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:31,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231050417] [2022-11-19 06:51:31,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:31,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:51:31,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:31,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231050417] [2022-11-19 06:51:31,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231050417] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:31,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:31,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:31,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411789765] [2022-11-19 06:51:31,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:31,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:31,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:31,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:31,203 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:51:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:31,303 INFO L93 Difference]: Finished difference Result 388 states and 533 transitions. [2022-11-19 06:51:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:31,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-19 06:51:31,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:31,306 INFO L225 Difference]: With dead ends: 388 [2022-11-19 06:51:31,306 INFO L226 Difference]: Without dead ends: 227 [2022-11-19 06:51:31,307 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 [2022-11-19 06:51:31,308 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 57 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:31,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 420 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:51:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-19 06:51:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 222. [2022-11-19 06:51:31,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 138 states have (on average 1.3840579710144927) internal successors, (191), 141 states have internal predecessors, (191), 61 states have call successors, (61), 22 states have call predecessors, (61), 22 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-19 06:51:31,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 312 transitions. [2022-11-19 06:51:31,328 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 312 transitions. Word has length 67 [2022-11-19 06:51:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:31,328 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 312 transitions. [2022-11-19 06:51:31,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 06:51:31,329 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 312 transitions. [2022-11-19 06:51:31,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 06:51:31,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:31,331 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] [2022-11-19 06:51:31,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:51:31,331 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:31,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:31,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1949167652, now seen corresponding path program 1 times [2022-11-19 06:51:31,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:31,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235381890] [2022-11-19 06:51:31,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:31,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:51:31,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:31,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235381890] [2022-11-19 06:51:31,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235381890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:51:31,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386658662] [2022-11-19 06:51:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:31,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:31,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:31,536 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:51:31,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:51:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:31,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:51:31,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:51:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:51:31,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:51:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:51:31,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386658662] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:51:31,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [663660664] [2022-11-19 06:51:32,017 INFO L159 IcfgInterpreter]: Started Sifa with 57 locations of interest [2022-11-19 06:51:32,017 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:51:32,021 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:51:32,037 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:51:32,038 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:51:59,536 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 06:51:59,828 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-19 06:52:00,268 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:52:15,026 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:52:21,741 WARN L233 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:52:28,948 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:52:35,627 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:52:42,650 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:52:57,645 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 508 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:53:24,862 WARN L233 SmtUtils]: Spent 20.56s on a formula simplification. DAG size of input: 589 DAG size of output: 456 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:53:34,055 WARN L233 SmtUtils]: Spent 8.89s on a formula simplification. DAG size of input: 574 DAG size of output: 369 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:53:44,159 WARN L233 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 576 DAG size of output: 401 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:53:53,541 WARN L233 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 576 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:02,945 WARN L233 SmtUtils]: Spent 9.04s on a formula simplification. DAG size of input: 574 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:54:04,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [663660664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:04,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:54:04,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [4, 4, 4] total 27 [2022-11-19 06:54:04,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438111269] [2022-11-19 06:54:04,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:04,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 06:54:04,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 06:54:04,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-19 06:54:04,334 INFO L87 Difference]: Start difference. First operand 222 states and 312 transitions. Second operand has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-19 06:54:12,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:12,553 INFO L93 Difference]: Finished difference Result 523 states and 785 transitions. [2022-11-19 06:54:12,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 06:54:12,554 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 68 [2022-11-19 06:54:12,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:12,557 INFO L225 Difference]: With dead ends: 523 [2022-11-19 06:54:12,557 INFO L226 Difference]: Without dead ends: 319 [2022-11-19 06:54:12,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 124.0s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-19 06:54:12,559 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 145 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1792 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:12,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 3069 Invalid, 1804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 1792 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-19 06:54:12,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-19 06:54:12,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 245. [2022-11-19 06:54:12,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 160 states have (on average 1.4) internal successors, (224), 163 states have internal predecessors, (224), 61 states have call successors, (61), 23 states have call predecessors, (61), 23 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-11-19 06:54:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 345 transitions. [2022-11-19 06:54:12,702 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 345 transitions. Word has length 68 [2022-11-19 06:54:12,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:12,703 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 345 transitions. [2022-11-19 06:54:12,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 16 states have internal predecessors, (36), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-19 06:54:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 345 transitions. [2022-11-19 06:54:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-19 06:54:12,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:12,705 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:12,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:54:12,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:12,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:12,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1203771102, now seen corresponding path program 1 times [2022-11-19 06:54:12,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:12,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354499040] [2022-11-19 06:54:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:12,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 06:54:13,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:13,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354499040] [2022-11-19 06:54:13,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354499040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:13,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:13,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:54:13,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137667665] [2022-11-19 06:54:13,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:13,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:54:13,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:13,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:54:13,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:13,050 INFO L87 Difference]: Start difference. First operand 245 states and 345 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:54:13,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:13,356 INFO L93 Difference]: Finished difference Result 583 states and 854 transitions. [2022-11-19 06:54:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:54:13,357 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 73 [2022-11-19 06:54:13,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:13,359 INFO L225 Difference]: With dead ends: 583 [2022-11-19 06:54:13,360 INFO L226 Difference]: Without dead ends: 362 [2022-11-19 06:54:13,361 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 [2022-11-19 06:54:13,362 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 55 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:13,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 430 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:54:13,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-19 06:54:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 357. [2022-11-19 06:54:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 247 states have (on average 1.45748987854251) internal successors, (360), 250 states have internal predecessors, (360), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2022-11-19 06:54:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 531 transitions. [2022-11-19 06:54:13,523 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 531 transitions. Word has length 73 [2022-11-19 06:54:13,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:13,523 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 531 transitions. [2022-11-19 06:54:13,524 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, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 06:54:13,524 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 531 transitions. [2022-11-19 06:54:13,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 06:54:13,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:13,526 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:13,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:54:13,526 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:13,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:13,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1780686664, now seen corresponding path program 1 times [2022-11-19 06:54:13,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:13,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145069386] [2022-11-19 06:54:13,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:13,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 06:54:13,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:13,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145069386] [2022-11-19 06:54:13,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145069386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:54:13,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29019625] [2022-11-19 06:54:13,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:13,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:13,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:54:13,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:54:13,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:54:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:13,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:54:13,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:54:13,995 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 06:54:13,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:54:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 06:54:14,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29019625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:54:14,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [574937577] [2022-11-19 06:54:14,064 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-19 06:54:14,064 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:54:14,065 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:54:14,065 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:54:14,065 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:54:49,809 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 06:54:50,138 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 444 for LOIs [2022-11-19 06:54:50,476 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:55:04,932 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:11,547 WARN L233 SmtUtils]: Spent 6.52s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:18,357 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 444 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:24,767 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 467 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:31,778 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:55:46,597 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 508 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:56:13,853 WARN L233 SmtUtils]: Spent 20.64s on a formula simplification. DAG size of input: 593 DAG size of output: 462 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:56:21,559 WARN L233 SmtUtils]: Spent 7.40s on a formula simplification. DAG size of input: 574 DAG size of output: 333 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:56:30,986 WARN L233 SmtUtils]: Spent 9.12s on a formula simplification. DAG size of input: 576 DAG size of output: 377 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:56:37,759 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 576 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:56:44,521 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 574 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:56:53,809 WARN L233 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 574 DAG size of output: 374 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:03,041 WARN L233 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 572 DAG size of output: 372 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:07,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [574937577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:57:07,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:57:07,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [4, 4, 4] total 31 [2022-11-19 06:57:07,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435563772] [2022-11-19 06:57:07,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:57:07,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-19 06:57:07,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:57:07,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-19 06:57:07,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=809, Unknown=0, NotChecked=0, Total=930 [2022-11-19 06:57:07,197 INFO L87 Difference]: Start difference. First operand 357 states and 531 transitions. Second operand has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-19 06:57:27,432 WARN L233 SmtUtils]: Spent 18.45s on a formula simplification. DAG size of input: 570 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:32,790 WARN L233 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 421 DAG size of output: 363 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:48,081 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 414 DAG size of output: 361 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:57:53,551 WARN L233 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 412 DAG size of output: 359 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 06:58:07,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:58:07,471 INFO L93 Difference]: Finished difference Result 808 states and 1262 transitions. [2022-11-19 06:58:07,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-19 06:58:07,471 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 74 [2022-11-19 06:58:07,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:58:07,475 INFO L225 Difference]: With dead ends: 808 [2022-11-19 06:58:07,475 INFO L226 Difference]: Without dead ends: 514 [2022-11-19 06:58:07,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 185.9s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2022-11-19 06:58:07,477 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 355 mSDsluCounter, 3187 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-11-19 06:58:07,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 3410 Invalid, 2332 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-11-19 06:58:07,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-19 06:58:07,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 419. [2022-11-19 06:58:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 305 states have (on average 1.5049180327868852) internal successors, (459), 310 states have internal predecessors, (459), 89 states have call successors, (89), 24 states have call predecessors, (89), 24 states have return successors, (88), 86 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-19 06:58:07,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 636 transitions. [2022-11-19 06:58:07,736 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 636 transitions. Word has length 74 [2022-11-19 06:58:07,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:58:07,736 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 636 transitions. [2022-11-19 06:58:07,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 20 states have (on average 1.95) internal successors, (39), 19 states have internal predecessors, (39), 8 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-11-19 06:58:07,737 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 636 transitions. [2022-11-19 06:58:07,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 06:58:07,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:58:07,744 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] [2022-11-19 06:58:07,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:58:07,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:58:07,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:58:07,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:58:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1925302324, now seen corresponding path program 1 times [2022-11-19 06:58:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:58:07,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066679272] [2022-11-19 06:58:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:07,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:58:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:08,194 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:58:08,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:58:08,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066679272] [2022-11-19 06:58:08,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066679272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:58:08,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012068301] [2022-11-19 06:58:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:58:08,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:58:08,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:58:08,196 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:58:08,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:58:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:58:08,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:58:08,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:58:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:58:08,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:58:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:58:08,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012068301] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:58:08,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1530716112] [2022-11-19 06:58:08,667 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2022-11-19 06:58:08,667 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:58:08,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:58:08,668 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:58:08,669 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:59:53,433 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 06:59:53,713 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringPublicKey with input of size 422 for LOIs [2022-11-19 06:59:53,978 INFO L197 IcfgInterpreter]: Interpreting procedure setClientKeyringUser with input of size 419 for LOIs [2022-11-19 06:59:54,234 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 236 for LOIs [2022-11-19 06:59:54,819 INFO L197 IcfgInterpreter]: Interpreting procedure createClientKeyringEntry with input of size 213 for LOIs [2022-11-19 06:59:54,876 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 448 for LOIs [2022-11-19 06:59:55,155 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 231 for LOIs [2022-11-19 07:00:10,797 INFO L197 IcfgInterpreter]: Interpreting procedure getClientPrivateKey with input of size 202 for LOIs [2022-11-19 07:00:10,826 INFO L197 IcfgInterpreter]: Interpreting procedure findPublicKey with input of size 222 for LOIs [2022-11-19 07:00:10,884 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 227 for LOIs [2022-11-19 07:00:10,922 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 424 for LOIs [2022-11-19 07:00:12,234 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:00:26,682 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 444 DAG size of output: 308 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:33,288 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 467 DAG size of output: 328 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:40,356 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 448 DAG size of output: 305 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:46,960 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 471 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:00:53,982 WARN L233 SmtUtils]: Spent 6.88s on a formula simplification. DAG size of input: 474 DAG size of output: 348 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:08,789 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 508 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:20,583 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 539 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:26,212 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 531 DAG size of output: 326 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:44,683 WARN L233 SmtUtils]: Spent 9.12s on a formula simplification. DAG size of input: 536 DAG size of output: 340 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:01:50,966 WARN L233 SmtUtils]: Spent 5.90s on a formula simplification. DAG size of input: 529 DAG size of output: 346 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:05,060 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 531 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:02:20,002 WARN L233 SmtUtils]: Spent 7.96s on a formula simplification. DAG size of input: 534 DAG size of output: 379 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:03,152 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 482 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:09,359 WARN L233 SmtUtils]: Spent 5.58s on a formula simplification. DAG size of input: 483 DAG size of output: 339 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:16,095 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification. DAG size of input: 524 DAG size of output: 362 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:19,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1530716112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:19,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:03:19,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [54] imperfect sequences [4, 4, 4] total 60 [2022-11-19 07:03:19,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047031546] [2022-11-19 07:03:19,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:19,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-11-19 07:03:19,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:19,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-11-19 07:03:19,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=3367, Unknown=0, NotChecked=0, Total=3540 [2022-11-19 07:03:19,802 INFO L87 Difference]: Start difference. First operand 419 states and 636 transitions. Second operand has 55 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 33 states have internal predecessors, (39), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 07:03:43,207 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 351 DAG size of output: 341 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:03:54,917 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 356 DAG size of output: 330 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:04:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:45,564 INFO L93 Difference]: Finished difference Result 885 states and 1373 transitions. [2022-11-19 07:04:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-19 07:04:45,565 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 33 states have internal predecessors, (39), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Word has length 77 [2022-11-19 07:04:45,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:45,569 INFO L225 Difference]: With dead ends: 885 [2022-11-19 07:04:45,569 INFO L226 Difference]: Without dead ends: 591 [2022-11-19 07:04:45,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 174 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 244.5s TimeCoverageRelationStatistics Valid=302, Invalid=5248, Unknown=0, NotChecked=0, Total=5550 [2022-11-19 07:04:45,572 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 307 mSDsluCounter, 4949 mSDsCounter, 0 mSdLazyCounter, 7069 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 5173 SdHoareTripleChecker+Invalid, 7118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 7069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:45,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 5173 Invalid, 7118 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [49 Valid, 7069 Invalid, 0 Unknown, 0 Unchecked, 27.9s Time] [2022-11-19 07:04:45,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-19 07:04:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 513. [2022-11-19 07:04:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 380 states have (on average 1.4973684210526317) internal successors, (569), 387 states have internal predecessors, (569), 101 states have call successors, (101), 33 states have call predecessors, (101), 31 states have return successors, (100), 94 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-19 07:04:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 770 transitions. [2022-11-19 07:04:45,921 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 770 transitions. Word has length 77 [2022-11-19 07:04:45,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:45,922 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 770 transitions. [2022-11-19 07:04:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 33 states have internal predecessors, (39), 17 states have call successors, (17), 12 states have call predecessors, (17), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-19 07:04:45,922 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 770 transitions. [2022-11-19 07:04:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:04:45,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:45,925 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, 1, 1, 1] [2022-11-19 07:04:45,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-19 07:04:46,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:04:46,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:46,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1237214846, now seen corresponding path program 1 times [2022-11-19 07:04:46,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:04:46,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616874851] [2022-11-19 07:04:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:04:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:04:46,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:04:46,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616874851] [2022-11-19 07:04:46,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616874851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:04:46,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810782811] [2022-11-19 07:04:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:46,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:04:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:04:46,314 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:04:46,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_15a84495-9302-42ba-8a3d-58736a5a1026/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:04:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:46,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:04:46,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:46,681 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:04:46,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:04:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:04:46,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810782811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:04:46,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [419306457] [2022-11-19 07:04:46,771 INFO L159 IcfgInterpreter]: Started Sifa with 72 locations of interest [2022-11-19 07:04:46,771 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:04:46,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:04:46,772 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:04:46,772 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs