./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec0_product05.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec0_product05.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74a12e124f66b10df64ef68155d31c3be83012aab827a45870f5335a6569b75a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:05:36,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:05:36,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:05:36,601 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:05:36,601 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:05:36,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:05:36,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:05:36,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:05:36,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:05:36,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:05:36,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:05:36,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:05:36,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:05:36,628 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:05:36,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:05:36,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:05:36,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:05:36,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:05:36,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:05:36,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:05:36,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:05:36,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:05:36,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:05:36,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:05:36,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:05:36,660 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:05:36,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:05:36,662 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:05:36,663 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:05:36,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:05:36,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:05:36,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:05:36,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:05:36,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:05:36,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:05:36,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:05:36,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:05:36,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:05:36,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:05:36,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:05:36,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:05:36,675 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:05:36,711 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:05:36,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:05:36,712 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:05:36,713 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:05:36,713 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:05:36,714 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:05:36,714 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:05:36,714 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:05:36,715 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:05:36,715 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:05:36,716 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:05:36,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:05:36,717 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:05:36,717 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:05:36,717 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:05:36,718 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:05:36,718 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:05:36,718 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:05:36,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:05:36,719 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:05:36,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:05:36,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:05:36,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:05:36,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:05:36,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:05:36,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:05:36,722 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:05:36,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:05:36,723 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:05:36,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:05:36,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:05:36,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:05:36,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:05:36,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:05:36,724 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:05:36,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:05:36,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:05:36,725 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:05:36,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:05:36,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:05:36,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:05:36,726 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_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74a12e124f66b10df64ef68155d31c3be83012aab827a45870f5335a6569b75a [2022-11-03 04:05:37,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:05:37,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:05:37,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:05:37,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:05:37,049 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:05:37,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec0_product05.cil.c [2022-11-03 04:05:37,125 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/data/8aff740be/cb9bd95b1cc747d0a87f278947da0365/FLAG89bebc30c [2022-11-03 04:05:37,680 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:05:37,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/sv-benchmarks/c/product-lines/email_spec0_product05.cil.c [2022-11-03 04:05:37,697 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/data/8aff740be/cb9bd95b1cc747d0a87f278947da0365/FLAG89bebc30c [2022-11-03 04:05:37,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/data/8aff740be/cb9bd95b1cc747d0a87f278947da0365 [2022-11-03 04:05:37,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:05:37,946 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:05:37,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:05:37,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:05:37,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:05:37,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:37" (1/1) ... [2022-11-03 04:05:37,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@127e69e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:37, skipping insertion in model container [2022-11-03 04:05:37,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:37" (1/1) ... [2022-11-03 04:05:37,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:05:38,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:05:38,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/sv-benchmarks/c/product-lines/email_spec0_product05.cil.c[4289,4302] [2022-11-03 04:05:38,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:05:38,668 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:05:38,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/sv-benchmarks/c/product-lines/email_spec0_product05.cil.c[4289,4302] [2022-11-03 04:05:38,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:05:38,822 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:05:38,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38 WrapperNode [2022-11-03 04:05:38,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:05:38,824 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:05:38,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:05:38,824 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:05:38,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,917 INFO L138 Inliner]: procedures = 107, calls = 125, calls flagged for inlining = 37, calls inlined = 30, statements flattened = 580 [2022-11-03 04:05:38,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:05:38,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:05:38,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:05:38,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:05:38,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,947 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,950 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:05:38,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:05:38,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:05:38,958 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:05:38,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (1/1) ... [2022-11-03 04:05:38,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:05:38,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:39,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:05:39,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:05:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 04:05:39,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 04:05:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 04:05:39,046 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 04:05:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 04:05:39,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 04:05:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 04:05:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 04:05:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 04:05:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:05:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 04:05:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 04:05:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 04:05:39,047 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 04:05:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 04:05:39,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 04:05:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:05:39,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:05:39,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:05:39,205 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:05:39,240 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:05:39,812 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:05:40,024 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:05:40,025 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:05:40,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:40 BoogieIcfgContainer [2022-11-03 04:05:40,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:05:40,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:05:40,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:05:40,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:05:40,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:05:37" (1/3) ... [2022-11-03 04:05:40,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143dfa53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:40, skipping insertion in model container [2022-11-03 04:05:40,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:38" (2/3) ... [2022-11-03 04:05:40,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143dfa53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:05:40, skipping insertion in model container [2022-11-03 04:05:40,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:05:40" (3/3) ... [2022-11-03 04:05:40,042 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec0_product05.cil.c [2022-11-03 04:05:40,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:05:40,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:05:40,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:05:40,139 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;@5363df44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:05:40,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:05:40,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 56 states have internal predecessors, (83), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-03 04:05:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 04:05:40,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:40,156 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 04:05:40,156 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:40,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:40,162 INFO L85 PathProgramCache]: Analyzing trace with hash -418419106, now seen corresponding path program 1 times [2022-11-03 04:05:40,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:40,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810688517] [2022-11-03 04:05:40,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:40,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:05:40,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:40,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810688517] [2022-11-03 04:05:40,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810688517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:40,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:40,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:05:40,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798759764] [2022-11-03 04:05:40,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:40,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:05:40,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:40,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:05:40,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:05:40,566 INFO L87 Difference]: Start difference. First operand has 77 states, 54 states have (on average 1.537037037037037) internal successors, (83), 56 states have internal predecessors, (83), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 04:05:40,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:40,666 INFO L93 Difference]: Finished difference Result 120 states and 164 transitions. [2022-11-03 04:05:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:05:40,668 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 46 [2022-11-03 04:05:40,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:40,679 INFO L225 Difference]: With dead ends: 120 [2022-11-03 04:05:40,680 INFO L226 Difference]: Without dead ends: 74 [2022-11-03 04:05:40,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:05:40,688 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:40,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:05:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-03 04:05:40,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-03 04:05:40,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 53 states have internal predecessors, (77), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:05:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 104 transitions. [2022-11-03 04:05:40,750 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 104 transitions. Word has length 46 [2022-11-03 04:05:40,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:40,753 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 104 transitions. [2022-11-03 04:05:40,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 04:05:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 104 transitions. [2022-11-03 04:05:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:05:40,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:40,760 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 04:05:40,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:05:40,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:40,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1260835874, now seen corresponding path program 1 times [2022-11-03 04:05:40,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:40,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732675334] [2022-11-03 04:05:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:05:40,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:40,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732675334] [2022-11-03 04:05:40,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732675334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:05:40,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:05:40,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:05:40,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667096381] [2022-11-03 04:05:40,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:40,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:05:40,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:05:40,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:05:40,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:40,998 INFO L87 Difference]: Start difference. First operand 74 states and 104 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 04:05:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:41,058 INFO L93 Difference]: Finished difference Result 116 states and 152 transitions. [2022-11-03 04:05:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:05:41,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 47 [2022-11-03 04:05:41,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:41,060 INFO L225 Difference]: With dead ends: 116 [2022-11-03 04:05:41,060 INFO L226 Difference]: Without dead ends: 76 [2022-11-03 04:05:41,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:05:41,063 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 0 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:41,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 173 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:05:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-03 04:05:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-03 04:05:41,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.462962962962963) internal successors, (79), 55 states have internal predecessors, (79), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:05:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2022-11-03 04:05:41,073 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 47 [2022-11-03 04:05:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:41,073 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2022-11-03 04:05:41,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 04:05:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2022-11-03 04:05:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 04:05:41,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:41,076 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:05:41,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:05:41,076 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:41,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:41,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1043327300, now seen corresponding path program 1 times [2022-11-03 04:05:41,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:05:41,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423047207] [2022-11-03 04:05:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:41,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:05:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:05:41,225 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:05:41,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423047207] [2022-11-03 04:05:41,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423047207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:41,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475185605] [2022-11-03 04:05:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:41,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:41,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:41,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:41,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 04:05:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:41,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:05:41,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:41,610 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:05:41,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:05:41,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475185605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:05:41,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1809602747] [2022-11-03 04:05:41,729 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-03 04:05:41,729 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:05:41,733 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:05:41,739 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:05:41,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:05:50,438 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 04:05:50,827 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:06:16,103 WARN L234 SmtUtils]: Spent 7.75s on a formula simplification. DAG size of input: 564 DAG size of output: 309 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:06:23,644 WARN L234 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 566 DAG size of output: 312 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:06:25,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1809602747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:25,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:06:25,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [4, 4, 4] total 19 [2022-11-03 04:06:25,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226861059] [2022-11-03 04:06:25,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:25,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:06:25,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:25,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:06:25,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:06:25,070 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand has 14 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 04:06:28,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:28,306 INFO L93 Difference]: Finished difference Result 214 states and 341 transitions. [2022-11-03 04:06:28,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 04:06:28,307 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2022-11-03 04:06:28,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:28,310 INFO L225 Difference]: With dead ends: 214 [2022-11-03 04:06:28,311 INFO L226 Difference]: Without dead ends: 150 [2022-11-03 04:06:28,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 34.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:06:28,313 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 99 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:28,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 994 Invalid, 670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-03 04:06:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-03 04:06:28,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 97. [2022-11-03 04:06:28,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.48) internal successors, (111), 76 states have internal predecessors, (111), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:06:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 138 transitions. [2022-11-03 04:06:28,390 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 138 transitions. Word has length 51 [2022-11-03 04:06:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:28,391 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 138 transitions. [2022-11-03 04:06:28,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 04:06:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 138 transitions. [2022-11-03 04:06:28,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-03 04:06:28,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:28,399 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:28,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:06:28,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:28,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:28,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:28,614 INFO L85 PathProgramCache]: Analyzing trace with hash -832994549, now seen corresponding path program 1 times [2022-11-03 04:06:28,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:28,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830208903] [2022-11-03 04:06:28,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:28,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:06:28,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:28,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830208903] [2022-11-03 04:06:28,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830208903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:28,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:28,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 04:06:28,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577735047] [2022-11-03 04:06:28,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:28,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 04:06:28,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:28,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 04:06:28,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:28,745 INFO L87 Difference]: Start difference. First operand 97 states and 138 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 04:06:28,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:28,881 INFO L93 Difference]: Finished difference Result 230 states and 341 transitions. [2022-11-03 04:06:28,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 04:06:28,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 52 [2022-11-03 04:06:28,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:28,883 INFO L225 Difference]: With dead ends: 230 [2022-11-03 04:06:28,884 INFO L226 Difference]: Without dead ends: 147 [2022-11-03 04:06:28,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 04:06:28,886 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 46 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:28,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 170 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:06:28,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-03 04:06:28,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2022-11-03 04:06:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 120 states have (on average 1.55) internal successors, (186), 121 states have internal predecessors, (186), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:06:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 213 transitions. [2022-11-03 04:06:28,972 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 213 transitions. Word has length 52 [2022-11-03 04:06:28,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:28,972 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 213 transitions. [2022-11-03 04:06:28,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 04:06:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 213 transitions. [2022-11-03 04:06:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-03 04:06:28,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:28,974 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 04:06:28,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:28,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 71777151, now seen corresponding path program 1 times [2022-11-03 04:06:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:28,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849015329] [2022-11-03 04:06:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:06:29,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:29,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849015329] [2022-11-03 04:06:29,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849015329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:06:29,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732863724] [2022-11-03 04:06:29,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:29,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:29,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:29,081 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:06:29,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 04:06:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:29,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:06:29,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:06:29,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:06:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:06:29,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732863724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:06:29,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1519726290] [2022-11-03 04:06:29,417 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-03 04:06:29,417 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:06:29,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:06:29,418 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:06:29,418 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:06:37,981 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 04:06:38,328 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:07:05,417 WARN L234 SmtUtils]: Spent 9.95s on a formula simplification. DAG size of input: 566 DAG size of output: 327 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:07:12,807 WARN L234 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 568 DAG size of output: 313 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:07:21,269 WARN L234 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 568 DAG size of output: 325 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:07:29,686 WARN L234 SmtUtils]: Spent 7.99s on a formula simplification. DAG size of input: 566 DAG size of output: 323 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:07:31,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1519726290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:31,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:07:31,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [4, 4, 4] total 21 [2022-11-03 04:07:31,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330441053] [2022-11-03 04:07:31,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:31,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 04:07:31,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:07:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 04:07:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-03 04:07:31,124 INFO L87 Difference]: Start difference. First operand 142 states and 213 transitions. Second operand has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 04:07:34,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:34,067 INFO L93 Difference]: Finished difference Result 344 states and 561 transitions. [2022-11-03 04:07:34,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:07:34,068 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 53 [2022-11-03 04:07:34,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:34,070 INFO L225 Difference]: With dead ends: 344 [2022-11-03 04:07:34,070 INFO L226 Difference]: Without dead ends: 257 [2022-11-03 04:07:34,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 52.8s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-03 04:07:34,073 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 157 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:34,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 838 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 04:07:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-03 04:07:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 150. [2022-11-03 04:07:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 128 states have (on average 1.546875) internal successors, (198), 129 states have internal predecessors, (198), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:07:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 225 transitions. [2022-11-03 04:07:34,166 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 225 transitions. Word has length 53 [2022-11-03 04:07:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:34,167 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 225 transitions. [2022-11-03 04:07:34,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 04:07:34,167 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 225 transitions. [2022-11-03 04:07:34,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-03 04:07:34,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:34,169 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:34,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-03 04:07:34,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:07:34,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1366890874, now seen corresponding path program 1 times [2022-11-03 04:07:34,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:07:34,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810834483] [2022-11-03 04:07:34,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:34,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:07:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:07:34,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:07:34,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810834483] [2022-11-03 04:07:34,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810834483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:07:34,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836847109] [2022-11-03 04:07:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:07:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:07:34,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:07:34,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 04:07:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:34,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:07:34,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:07:34,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:07:34,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836847109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:07:34,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196248685] [2022-11-03 04:07:34,798 INFO L159 IcfgInterpreter]: Started Sifa with 46 locations of interest [2022-11-03 04:07:34,799 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:07:34,799 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:07:34,799 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:07:34,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:07:44,078 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 452 for LOIs [2022-11-03 04:07:44,369 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:07:56,150 WARN L234 SmtUtils]: Spent 6.05s on a formula simplification. DAG size of input: 452 DAG size of output: 257 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:08:02,572 WARN L234 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 475 DAG size of output: 277 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:08:17,424 WARN L234 SmtUtils]: Spent 10.72s on a formula simplification. DAG size of input: 568 DAG size of output: 403 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:08:28,023 WARN L234 SmtUtils]: Spent 9.87s on a formula simplification. DAG size of input: 570 DAG size of output: 422 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:08:37,736 WARN L234 SmtUtils]: Spent 9.33s on a formula simplification. DAG size of input: 570 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:08:47,307 WARN L234 SmtUtils]: Spent 9.14s on a formula simplification. DAG size of input: 568 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:08:54,861 WARN L234 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 568 DAG size of output: 319 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:09:02,388 WARN L234 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 566 DAG size of output: 317 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:09:03,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1196248685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:03,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:09:03,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4, 4, 4] total 23 [2022-11-03 04:09:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98053379] [2022-11-03 04:09:03,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:03,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-03 04:09:03,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:09:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-03 04:09:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-03 04:09:03,967 INFO L87 Difference]: Start difference. First operand 150 states and 225 transitions. Second operand has 18 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 04:09:07,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:07,407 INFO L93 Difference]: Finished difference Result 348 states and 566 transitions. [2022-11-03 04:09:07,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 04:09:07,408 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2022-11-03 04:09:07,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:07,409 INFO L225 Difference]: With dead ends: 348 [2022-11-03 04:09:07,410 INFO L226 Difference]: Without dead ends: 261 [2022-11-03 04:09:07,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 79.6s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-03 04:09:07,411 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 108 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:07,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 772 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-03 04:09:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-03 04:09:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 160. [2022-11-03 04:09:07,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 138 states have (on average 1.5434782608695652) internal successors, (213), 139 states have internal predecessors, (213), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 04:09:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 240 transitions. [2022-11-03 04:09:07,530 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 240 transitions. Word has length 55 [2022-11-03 04:09:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:07,531 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 240 transitions. [2022-11-03 04:09:07,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 04:09:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 240 transitions. [2022-11-03 04:09:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-03 04:09:07,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:07,532 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:09:07,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:07,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 04:09:07,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:07,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1757041449, now seen corresponding path program 1 times [2022-11-03 04:09:07,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:09:07,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487560039] [2022-11-03 04:09:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:07,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:09:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:09:07,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:09:07,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487560039] [2022-11-03 04:09:07,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487560039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:07,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464694625] [2022-11-03 04:09:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:07,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:07,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:07,896 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:07,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 04:09:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:08,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:09:08,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:08,181 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:09:08,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:08,252 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:09:08,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464694625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:09:08,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [174818318] [2022-11-03 04:09:08,255 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2022-11-03 04:09:08,255 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:09:08,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:09:08,256 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:09:08,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:09:17,946 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 04:09:18,232 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 246 for LOIs [2022-11-03 04:09:19,592 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-11-03 04:09:21,731 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 239 for LOIs [2022-11-03 04:09:21,764 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 481 for LOIs [2022-11-03 04:09:25,015 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 236 for LOIs [2022-11-03 04:09:25,049 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:10:01,835 WARN L234 SmtUtils]: Spent 8.56s on a formula simplification. DAG size of input: 481 DAG size of output: 248 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:10:32,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [174818318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:32,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:10:32,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [6, 5, 5] total 42 [2022-11-03 04:10:32,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252758899] [2022-11-03 04:10:32,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:32,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 04:10:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:10:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 04:10:32,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1606, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 04:10:32,590 INFO L87 Difference]: Start difference. First operand 160 states and 240 transitions. Second operand has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-03 04:10:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:42,255 INFO L93 Difference]: Finished difference Result 420 states and 673 transitions. [2022-11-03 04:10:42,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 04:10:42,255 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 56 [2022-11-03 04:10:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:42,258 INFO L225 Difference]: With dead ends: 420 [2022-11-03 04:10:42,258 INFO L226 Difference]: Without dead ends: 291 [2022-11-03 04:10:42,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 69.7s TimeCoverageRelationStatistics Valid=124, Invalid=1682, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 04:10:42,260 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 231 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 2344 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:42,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 1995 Invalid, 2370 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26 Valid, 2344 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-03 04:10:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-03 04:10:42,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 229. [2022-11-03 04:10:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 197 states have (on average 1.598984771573604) internal successors, (315), 199 states have internal predecessors, (315), 20 states have call successors, (20), 12 states have call predecessors, (20), 11 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-03 04:10:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 354 transitions. [2022-11-03 04:10:42,472 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 354 transitions. Word has length 56 [2022-11-03 04:10:42,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:42,473 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 354 transitions. [2022-11-03 04:10:42,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2022-11-03 04:10:42,473 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 354 transitions. [2022-11-03 04:10:42,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 04:10:42,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:42,475 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:10:42,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:42,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:42,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:42,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:42,688 INFO L85 PathProgramCache]: Analyzing trace with hash 48270293, now seen corresponding path program 1 times [2022-11-03 04:10:42,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:10:42,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465037318] [2022-11-03 04:10:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:42,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:10:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:10:42,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:10:42,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465037318] [2022-11-03 04:10:42,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465037318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:42,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196462191] [2022-11-03 04:10:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:42,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:42,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:42,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:42,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 04:10:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:43,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:10:43,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:43,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:10:43,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:10:43,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196462191] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:10:43,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [173895315] [2022-11-03 04:10:43,130 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-03 04:10:43,130 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:10:43,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:10:43,131 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:10:43,131 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:11:08,715 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 04:11:09,016 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 248 for LOIs [2022-11-03 04:11:10,327 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 248 for LOIs [2022-11-03 04:11:20,574 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 242 for LOIs [2022-11-03 04:11:20,601 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-11-03 04:11:20,634 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 477 for LOIs [2022-11-03 04:11:22,283 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 452 for LOIs [2022-11-03 04:11:22,932 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:11:46,905 WARN L234 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 561 DAG size of output: 306 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:52,537 WARN L234 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 563 DAG size of output: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:11:58,765 WARN L234 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 563 DAG size of output: 322 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:04,789 WARN L234 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 561 DAG size of output: 320 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:21,568 WARN L234 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 559 DAG size of output: 339 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:28,115 WARN L234 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 557 DAG size of output: 337 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:46,070 WARN L234 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 555 DAG size of output: 385 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:12:54,160 WARN L234 SmtUtils]: Spent 7.71s on a formula simplification. DAG size of input: 553 DAG size of output: 383 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:00,988 WARN L234 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 562 DAG size of output: 307 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:13,009 WARN L234 SmtUtils]: Spent 9.12s on a formula simplification. DAG size of input: 477 DAG size of output: 250 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:51,091 WARN L234 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 562 DAG size of output: 340 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:13:57,065 WARN L234 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 564 DAG size of output: 341 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:14:11,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [173895315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:14:11,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:14:11,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [48] imperfect sequences [4, 4, 4] total 54 [2022-11-03 04:14:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890069437] [2022-11-03 04:14:11,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:11,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 04:14:11,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:14:11,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 04:14:11,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=2645, Unknown=0, NotChecked=0, Total=2862 [2022-11-03 04:14:11,336 INFO L87 Difference]: Start difference. First operand 229 states and 354 transitions. Second operand has 49 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 states have internal predecessors, (36), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 04:15:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:02,608 INFO L93 Difference]: Finished difference Result 406 states and 632 transitions. [2022-11-03 04:15:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-03 04:15:02,609 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 states have internal predecessors, (36), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 61 [2022-11-03 04:15:02,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:02,611 INFO L225 Difference]: With dead ends: 406 [2022-11-03 04:15:02,611 INFO L226 Difference]: Without dead ends: 319 [2022-11-03 04:15:02,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 211.2s TimeCoverageRelationStatistics Valid=440, Invalid=4116, Unknown=0, NotChecked=0, Total=4556 [2022-11-03 04:15:02,614 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 310 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:02,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1212 Invalid, 2498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [43 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-03 04:15:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-03 04:15:02,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 288. [2022-11-03 04:15:02,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 243 states have (on average 1.559670781893004) internal successors, (379), 246 states have internal predecessors, (379), 28 states have call successors, (28), 18 states have call predecessors, (28), 16 states have return successors, (28), 23 states have call predecessors, (28), 27 states have call successors, (28) [2022-11-03 04:15:02,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 435 transitions. [2022-11-03 04:15:02,855 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 435 transitions. Word has length 61 [2022-11-03 04:15:02,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:02,856 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 435 transitions. [2022-11-03 04:15:02,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 32 states have internal predecessors, (36), 11 states have call successors, (11), 7 states have call predecessors, (11), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 04:15:02,856 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 435 transitions. [2022-11-03 04:15:02,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 04:15:02,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:02,858 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:15:02,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:15:03,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:03,059 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:03,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash -541173377, now seen corresponding path program 1 times [2022-11-03 04:15:03,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:15:03,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979079425] [2022-11-03 04:15:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:03,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:15:03,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:15:03,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:15:03,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979079425] [2022-11-03 04:15:03,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979079425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:15:03,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40981167] [2022-11-03 04:15:03,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:03,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:03,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:15:03,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:15:03,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26402eab-d8a1-4ede-8093-221d318b7476/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 04:15:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:03,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:15:03,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:03,540 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:15:03,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:15:03,633 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 04:15:03,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40981167] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:15:03,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1029658689] [2022-11-03 04:15:03,640 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2022-11-03 04:15:03,640 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:15:03,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:15:03,643 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:15:03,643 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:15:27,173 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 451 for LOIs [2022-11-03 04:15:27,447 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 464 for LOIs [2022-11-03 04:15:49,562 INFO L197 IcfgInterpreter]: Interpreting procedure outgoing with input of size 462 for LOIs [2022-11-03 04:16:02,344 INFO L197 IcfgInterpreter]: Interpreting procedure isReadable with input of size 242 for LOIs [2022-11-03 04:16:02,371 INFO L197 IcfgInterpreter]: Interpreting procedure getEmailTo with input of size 241 for LOIs [2022-11-03 04:16:02,404 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailFrom with input of size 455 for LOIs [2022-11-03 04:16:03,082 INFO L197 IcfgInterpreter]: Interpreting procedure setEmailTo with input of size 445 for LOIs [2022-11-03 04:16:03,710 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:16:26,963 WARN L234 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 551 DAG size of output: 352 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:33,658 WARN L234 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 553 DAG size of output: 354 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:41,535 WARN L234 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 555 DAG size of output: 356 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:49,066 WARN L234 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 557 DAG size of output: 379 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:16:56,545 WARN L234 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 555 DAG size of output: 377 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:25,992 WARN L234 SmtUtils]: Spent 8.41s on a formula simplification. DAG size of input: 557 DAG size of output: 421 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:35,058 WARN L234 SmtUtils]: Spent 8.33s on a formula simplification. DAG size of input: 555 DAG size of output: 419 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:44,446 WARN L234 SmtUtils]: Spent 8.63s on a formula simplification. DAG size of input: 559 DAG size of output: 423 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:17:51,303 WARN L234 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 552 DAG size of output: 353 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)