./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE --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 35aee247a9d57b19731affe394846ba9ce20d46b03fd5dbce1e446f98386181b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:21:54,851 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:21:54,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:21:54,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:21:54,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:21:54,886 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:21:54,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:21:54,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:21:54,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:21:54,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:21:54,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:21:54,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:21:54,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:21:54,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:21:54,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:21:54,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:21:54,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:21:54,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:21:54,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:21:54,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:21:54,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:21:54,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:21:54,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:21:54,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:21:54,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:21:54,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:21:54,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:21:54,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:21:54,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:21:54,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:21:54,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:21:54,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:21:54,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:21:54,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:21:54,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:21:54,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:21:54,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:21:54,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:21:54,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:21:54,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:21:54,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:21:54,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:21:54,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:21:54,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:21:54,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:21:54,983 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:21:54,983 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:21:54,983 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:21:54,984 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:21:54,984 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:21:54,984 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:21:54,984 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:21:54,985 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:21:54,985 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:21:54,985 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:21:54,985 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:21:54,986 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:21:54,987 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:21:54,987 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:21:54,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:21:54,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:21:54,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:21:54,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:21:54,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:21:54,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:21:54,989 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:21:54,989 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:21:54,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:21:54,989 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:21:54,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:21:54,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:21:54,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:21:54,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:21:54,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:21:54,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:21:54,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:21:54,992 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:21:54,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:21:54,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:21:54,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:21:54,993 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:21:54,993 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 35aee247a9d57b19731affe394846ba9ce20d46b03fd5dbce1e446f98386181b [2021-10-24 10:21:55,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:21:55,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:21:55,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:21:55,294 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:21:55,294 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:21:55,295 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2021-10-24 10:21:55,364 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/data/fa9ba5903/da01ff8f5ea54a078f6426262d0274cf/FLAG1087cb2ce [2021-10-24 10:21:55,908 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:21:55,909 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2021-10-24 10:21:55,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/data/fa9ba5903/da01ff8f5ea54a078f6426262d0274cf/FLAG1087cb2ce [2021-10-24 10:21:56,276 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/data/fa9ba5903/da01ff8f5ea54a078f6426262d0274cf [2021-10-24 10:21:56,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:21:56,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:21:56,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:21:56,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:21:56,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:21:56,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5300ad2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56, skipping insertion in model container [2021-10-24 10:21:56,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:21:56,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:21:56,508 WARN L228 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_8397d839-6ca7-4844-a514-6d3547178a86/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2021-10-24 10:21:56,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:21:56,538 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:21:56,572 WARN L228 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_8397d839-6ca7-4844-a514-6d3547178a86/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2021-10-24 10:21:56,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:21:56,610 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:21:56,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56 WrapperNode [2021-10-24 10:21:56,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:21:56,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:21:56,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:21:56,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:21:56,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:21:56,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:21:56,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:21:56,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:21:56,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:21:56,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:21:56,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:21:56,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:21:56,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (1/1) ... [2021-10-24 10:21:56,722 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:21:56,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:21:56,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:21:56,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:21:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:21:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:21:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:21:56,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:21:57,278 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:21:57,278 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-24 10:21:57,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:21:57 BoogieIcfgContainer [2021-10-24 10:21:57,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:21:57,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:21:57,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:21:57,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:21:57,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:21:56" (1/3) ... [2021-10-24 10:21:57,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8b0b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:21:57, skipping insertion in model container [2021-10-24 10:21:57,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:21:56" (2/3) ... [2021-10-24 10:21:57,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c8b0b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:21:57, skipping insertion in model container [2021-10-24 10:21:57,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:21:57" (3/3) ... [2021-10-24 10:21:57,289 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound1.c [2021-10-24 10:21:57,293 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:21:57,294 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-10-24 10:21:57,338 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:21:57,344 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:21:57,345 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-24 10:21:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:57,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:21:57,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:57,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:21:57,367 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:21:57,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:57,373 INFO L82 PathProgramCache]: Analyzing trace with hash 5453836, now seen corresponding path program 1 times [2021-10-24 10:21:57,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:21:57,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132373650] [2021-10-24 10:21:57,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:57,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:21:57,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:21:57,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331291241] [2021-10-24 10:21:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:57,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:21:57,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:21:57,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:21:57,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:21:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:57,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 10:21:57,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:57,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:57,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:57,886 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:21:57,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132373650] [2021-10-24 10:21:57,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:21:57,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331291241] [2021-10-24 10:21:57,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331291241] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:57,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:21:57,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:21:57,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747660415] [2021-10-24 10:21:57,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:21:57,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:21:57,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:21:57,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:21:57,910 INFO L87 Difference]: Start difference. First operand has 34 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:58,076 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2021-10-24 10:21:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:21:58,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-24 10:21:58,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:58,086 INFO L225 Difference]: With dead ends: 75 [2021-10-24 10:21:58,087 INFO L226 Difference]: Without dead ends: 38 [2021-10-24 10:21:58,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:21:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-24 10:21:58,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2021-10-24 10:21:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:58,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-10-24 10:21:58,128 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 4 [2021-10-24 10:21:58,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:58,128 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-10-24 10:21:58,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-10-24 10:21:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:21:58,129 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:58,129 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:21:58,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:58,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 10:21:58,333 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:21:58,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:58,333 INFO L82 PathProgramCache]: Analyzing trace with hash 946325295, now seen corresponding path program 1 times [2021-10-24 10:21:58,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:21:58,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022138660] [2021-10-24 10:21:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:58,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:21:58,351 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:21:58,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346801020] [2021-10-24 10:21:58,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:58,351 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:21:58,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:21:58,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:21:58,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:21:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:58,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-24 10:21:58,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:58,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:58,617 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:21:58,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022138660] [2021-10-24 10:21:58,618 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:21:58,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346801020] [2021-10-24 10:21:58,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346801020] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:58,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:21:58,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:21:58,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611905892] [2021-10-24 10:21:58,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:21:58,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:21:58,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:21:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:21:58,631 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:58,757 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-10-24 10:21:58,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:21:58,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:21:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:58,761 INFO L225 Difference]: With dead ends: 52 [2021-10-24 10:21:58,761 INFO L226 Difference]: Without dead ends: 44 [2021-10-24 10:21:58,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:21:58,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-24 10:21:58,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2021-10-24 10:21:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-10-24 10:21:58,789 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2021-10-24 10:21:58,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:58,790 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-10-24 10:21:58,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-10-24 10:21:58,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:21:58,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:58,792 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:21:58,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:59,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-24 10:21:59,009 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:21:59,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:59,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1120146711, now seen corresponding path program 1 times [2021-10-24 10:21:59,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:21:59,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161362552] [2021-10-24 10:21:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:59,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:21:59,027 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:21:59,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373769293] [2021-10-24 10:21:59,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:59,028 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:21:59,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:21:59,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:21:59,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:21:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:59,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:21:59,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:21:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:59,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:21:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:21:59,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:21:59,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161362552] [2021-10-24 10:21:59,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:21:59,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373769293] [2021-10-24 10:21:59,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373769293] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:21:59,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:21:59,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-24 10:21:59,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705268766] [2021-10-24 10:21:59,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:21:59,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:21:59,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:21:59,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:21:59,250 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:59,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:21:59,319 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-10-24 10:21:59,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:21:59,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 10:21:59,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:21:59,323 INFO L225 Difference]: With dead ends: 44 [2021-10-24 10:21:59,323 INFO L226 Difference]: Without dead ends: 42 [2021-10-24 10:21:59,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:21:59,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-24 10:21:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-10-24 10:21:59,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-10-24 10:21:59,347 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 13 [2021-10-24 10:21:59,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:21:59,348 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-10-24 10:21:59,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:21:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-10-24 10:21:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-24 10:21:59,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:21:59,352 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:21:59,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:21:59,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:21:59,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:21:59,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:21:59,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1053678152, now seen corresponding path program 1 times [2021-10-24 10:21:59,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:21:59,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74181452] [2021-10-24 10:21:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:59,574 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:21:59,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:21:59,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463545719] [2021-10-24 10:21:59,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:21:59,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:21:59,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:21:59,592 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:21:59,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 10:21:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:21:59,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-24 10:21:59,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:22:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:22:00,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:22:00,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:22:00,716 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:22:00,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74181452] [2021-10-24 10:22:00,717 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:22:00,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463545719] [2021-10-24 10:22:00,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463545719] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:22:00,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1564301988] [2021-10-24 10:22:00,742 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2021-10-24 10:22:00,743 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:22:00,749 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:22:00,755 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:22:00,756 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:22:00,813 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.1 percent of original size [2021-10-24 10:22:00,815 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:22:00,815 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:00,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:22:00,817 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:22:00,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:00,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:22:00,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-24 10:22:00,846 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-24 10:22:00,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:00,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:00,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:00,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 10:22:00,888 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:00,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:22:00,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:00,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:22:00,899 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:22:00,909 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:22:00,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:00,910 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:22:00,911 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:00,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:22:00,911 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:22:00,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:00,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:01,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:01,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:01,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:01,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:01,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:01,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:01,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:01,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:01,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 10:22:01,025 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:22:01,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,030 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:22:01,030 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:22:01,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,045 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,049 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-10-24 10:22:01,051 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-24 10:22:01,052 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:22:01,052 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:308, output treesize:125 [2021-10-24 10:22:01,062 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,070 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-24 10:22:01,077 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-24 10:22:01,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-10-24 10:22:01,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-24 10:22:01,143 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-24 10:22:01,159 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-24 10:22:01,174 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-24 10:22:01,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,195 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-10-24 10:22:01,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,205 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-10-24 10:22:01,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,220 INFO L185 QuantifierPusher]: treesize reduction 10, result has 94.4 percent of original size 170 [2021-10-24 10:22:01,230 INFO L180 QuantifierPusher]: treesize reduction 10, result has 95.3 percent of original size [2021-10-24 10:22:01,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-10-24 10:22:01,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-24 10:22:01,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,281 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-10-24 10:22:01,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,361 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,403 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,457 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,459 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,509 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,516 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 225 [2021-10-24 10:22:01,524 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,571 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,659 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.8 percent of original size [2021-10-24 10:22:01,666 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-24 10:22:01,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,699 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,702 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,743 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,747 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:22:01,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,825 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,847 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,854 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:01,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,908 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:22:01,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:01,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 10:22:01,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-24 10:22:01,947 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:22:04,084 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:22:04,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:22:04,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-10-24 10:22:04,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309738536] [2021-10-24 10:22:04,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-24 10:22:04,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:22:04,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-24 10:22:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-10-24 10:22:04,087 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:22:04,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:22:04,498 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2021-10-24 10:22:04,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-24 10:22:04,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-24 10:22:04,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:22:04,503 INFO L225 Difference]: With dead ends: 78 [2021-10-24 10:22:04,503 INFO L226 Difference]: Without dead ends: 43 [2021-10-24 10:22:04,504 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 2472.5ms TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2021-10-24 10:22:04,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-24 10:22:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2021-10-24 10:22:04,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:22:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-24 10:22:04,511 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 19 [2021-10-24 10:22:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:22:04,512 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-24 10:22:04,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:22:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-24 10:22:04,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-24 10:22:04,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:22:04,513 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:22:04,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:22:04,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:22:04,714 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-10-24 10:22:04,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:22:04,715 INFO L82 PathProgramCache]: Analyzing trace with hash 226573641, now seen corresponding path program 1 times [2021-10-24 10:22:04,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:22:04,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714649921] [2021-10-24 10:22:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:22:04,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:22:04,741 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:22:04,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148086020] [2021-10-24 10:22:04,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:22:04,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:22:04,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:22:04,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:22:04,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 10:22:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:22:04,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:22:04,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:22:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:22:05,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:22:05,399 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:22:05,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:22:05,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714649921] [2021-10-24 10:22:05,400 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:22:05,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148086020] [2021-10-24 10:22:05,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148086020] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:22:05,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [542412884] [2021-10-24 10:22:05,404 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2021-10-24 10:22:05,404 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:22:05,405 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:22:05,405 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:22:05,405 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:22:05,432 INFO L180 QuantifierPusher]: treesize reduction 16, result has 91.1 percent of original size [2021-10-24 10:22:05,434 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:22:05,435 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:22:05,436 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:22:05,436 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:22:05,439 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-24 10:22:05,460 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-10-24 10:22:05,470 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:22:05,470 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,471 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:22:05,472 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:22:05,473 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:22:05,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 10:22:05,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:22:05,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:22:05,496 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:22:05,497 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,507 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:22:05,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 10:22:05,531 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,533 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:22:05,534 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,534 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:22:05,535 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:22:05,535 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,541 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,543 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.7 percent of original size [2021-10-24 10:22:05,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 125 [2021-10-24 10:22:05,546 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:22:05,546 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:308, output treesize:125 [2021-10-24 10:22:05,556 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-24 10:22:05,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,574 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-24 10:22:05,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-10-24 10:22:05,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-24 10:22:05,605 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-24 10:22:05,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-24 10:22:05,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 166 [2021-10-24 10:22:05,651 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 170 [2021-10-24 10:22:05,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:22:05,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-24 10:22:05,688 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:22:05,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,727 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,737 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 159 [2021-10-24 10:22:05,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,764 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-10-24 10:22:05,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,790 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,841 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,897 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:05,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 225 [2021-10-24 10:22:05,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,939 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,996 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:05,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,007 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,019 INFO L180 QuantifierPusher]: treesize reduction 36, result has 75.8 percent of original size [2021-10-24 10:22:06,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-10-24 10:22:06,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:06,033 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:22:06,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,052 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,112 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,117 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:06,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:06,163 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 175 [2021-10-24 10:22:06,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:06,173 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:22:06,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:22:06,182 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 10:22:06,198 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 228 [2021-10-24 10:22:06,201 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:22:08,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [542412884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:22:08,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:22:08,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 6] total 18 [2021-10-24 10:22:08,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595624330] [2021-10-24 10:22:08,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:22:08,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:22:08,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:22:08,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2021-10-24 10:22:08,537 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:22:09,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:22:09,314 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-24 10:22:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:22:09,314 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-10-24 10:22:09,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:22:09,315 INFO L225 Difference]: With dead ends: 39 [2021-10-24 10:22:09,315 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:22:09,315 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 71 SyntacticMatches, 15 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 3082.8ms TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2021-10-24 10:22:09,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:22:09,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:22:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:22:09,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:22:09,316 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-24 10:22:09,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:22:09,317 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:22:09,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:22:09,317 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:22:09,317 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:22:09,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:22:09,320 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:22:09,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:22:09,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:22:09,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:22:09,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:22:09,321 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:22:09,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-10-24 10:22:09,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:22:09,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:22:09,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:09,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:09,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:09,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:09,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:09,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:09,588 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:09,596 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:09,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:22:10,775 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 10:22:10,775 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 10:22:10,775 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:22:10,775 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 10:22:10,776 INFO L853 garLoopResultBuilder]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse1 (<= ULTIMATE.start_main_~y~0 1))) (or (and (<= 0 |#t~string4.base|) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (<= |#NULL.offset| 0) (<= 0 |#t~string5.offset|) (<= 1 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_main_~q~0 0) (<= 0 |#t~string6.base|) (<= 1 |ULTIMATE.start_assume_abort_if_not_#in~cond|) (<= ULTIMATE.start_main_~r~0 1) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 0) (<= 0 |#NULL.offset|) (<= 0 ULTIMATE.start_main_~a~0) (<= 0 ULTIMATE.start_main_~x~0) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse1 (<= |#t~string5.offset| 0) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)) (let ((.cse2 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0))) (and (<= ULTIMATE.start_main_~y~0 .cse2) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 .cse2) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) (= ULTIMATE.start_main_~a~0 1) .cse1)))) [2021-10-24 10:22:10,776 INFO L857 garLoopResultBuilder]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2021-10-24 10:22:10,776 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 10:22:10,776 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 59) the Hoare annotation is: (and (<= 0 |#t~string4.base|) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~r~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)) [2021-10-24 10:22:10,776 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2021-10-24 10:22:10,776 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 10:22:10,776 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-24 10:22:10,777 INFO L853 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse3 (<= ULTIMATE.start_main_~y~0 1))) (or (let ((.cse0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0))) (and (<= ULTIMATE.start_main_~y~0 .cse0) .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 .cse0) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse2 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~q~0 1) .cse3)) (and (<= 0 |#t~string4.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) .cse1 (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (<= 0 |#t~string5.offset|) (<= 0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0) .cse2 (= ULTIMATE.start_main_~q~0 0) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_assume_abort_if_not_#in~cond|) (<= ULTIMATE.start_main_~r~0 1) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 0) (<= 0 ULTIMATE.start_main_~a~0) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse3 (<= |#t~string5.offset| 0) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)))) [2021-10-24 10:22:10,777 INFO L857 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-24 10:22:10,777 INFO L853 garLoopResultBuilder]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse2 (<= ULTIMATE.start_main_~y~0 1))) (or (let ((.cse0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~r~0))) (and (<= ULTIMATE.start_main_~y~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~x~0 .cse0) (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0) .cse1 (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~q~0 1) .cse2)) (and (<= 0 |#t~string4.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= ULTIMATE.start_main_~x~0 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= 0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~a~0 0) (<= 0 ULTIMATE.start_main_~a~0) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) .cse2 (= 0 |#t~string4.offset|) (= |#NULL.base| 0)))) [2021-10-24 10:22:10,777 INFO L857 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-24 10:22:10,777 INFO L853 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (<= 0 |#t~string4.base|) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= 1 ULTIMATE.start_main_~b~0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 0 |#t~string6.base|) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~r~0 1) (<= 1 ULTIMATE.start_main_~x~0) (= |#t~string6.offset| 0) (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~y~0 1) (= 0 |#t~string4.offset|) (= |#NULL.base| 0)) [2021-10-24 10:22:10,777 INFO L857 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-24 10:22:10,777 INFO L853 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= 14 (select |#length| |#t~string5.base|)) (<= ULTIMATE.start_main_~x~0 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string5.base|) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= (select |#valid| |#t~string6.base|) 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (= (select |#valid| 0) 0) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse0 (+ 1 |#t~string4.offset|)) 0) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= |#t~string6.offset| 0) (= (select |#length| |#t~string4.base|) 2) (= (select .cse0 |#t~string4.offset|) 48) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= 0 |#t~string4.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-10-24 10:22:10,778 INFO L857 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-24 10:22:10,778 INFO L853 garLoopResultBuilder]: At program point L15-14(lines 52 53) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (< |#StackHeapBarrier| |#t~string6.base|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= 14 (select |#length| |#t~string5.base|)) (<= ULTIMATE.start_main_~x~0 1) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string5.base|) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= (select |#valid| |#t~string6.base|) 1) (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (= (select |#valid| 0) 0) (< |#StackHeapBarrier| |#t~string4.base|) (= (select |#length| |#t~string6.base|) 12) (= (select .cse0 (+ 1 |#t~string4.offset|)) 0) (= |#NULL.offset| 0) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= |#t~string6.offset| 0) (= (select |#length| |#t~string4.base|) 2) (= (select .cse0 |#t~string4.offset|) 48) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= 0 |#t~string4.offset|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond))) [2021-10-24 10:22:10,779 INFO L857 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-24 10:22:10,779 INFO L853 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: false [2021-10-24 10:22:10,779 INFO L857 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-24 10:22:10,779 INFO L853 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) [2021-10-24 10:22:10,780 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 10:22:10,780 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-24 10:22:10,780 INFO L857 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-24 10:22:10,780 INFO L857 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-24 10:22:10,780 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-24 10:22:10,780 INFO L857 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-24 10:22:10,781 INFO L857 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-24 10:22:10,781 INFO L857 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-24 10:22:10,781 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:22:10,781 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-24 10:22:10,785 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:22:10,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:22:10 BoogieIcfgContainer [2021-10-24 10:22:10,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:22:10,854 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:22:10,854 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:22:10,855 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:22:10,855 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:21:57" (3/4) ... [2021-10-24 10:22:10,858 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:22:10,872 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2021-10-24 10:22:10,872 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-24 10:22:10,873 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:22:10,873 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:22:10,898 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((0 <= "0" && 1 <= cond) && \old(cond) <= 1) && 0 <= "cohendiv-ll.c") && #NULL <= 0) && 0 <= "cohendiv-ll.c") && 1 <= y) && b == a * y) && q == 0) && 0 <= "reach_error") && 1 <= \old(cond)) && r <= 1) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= #NULL) && 0 <= a) && 0 <= x) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && "cohendiv-ll.c" <= 0) && 0 == "0") && #NULL == 0) || (((((((y <= b + r && 1 <= cond) && x == b + r) && r < b) && b == a * y) && a == q) && a == 1) && y <= 1) [2021-10-24 10:22:10,898 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((y <= b + r && 1 <= cond) && 1 == cond) && x == b + r) && r < b) && b == a * y) && a == 1) && q == 1) && y <= 1) || (((((((((((((((((((((((((0 <= "0" && \old(cond) == cond) && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) <= 1) && 0 <= "cohendiv-ll.c") && 0 <= "cohendiv-ll.c") && 0 <= r) && 1 <= y) && b == a * y) && q == 0) && 0 <= "reach_error") && #NULL == 0) && 1 <= \old(cond)) && r <= 1) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && "cohendiv-ll.c" <= 0) && 0 == "0") && #NULL == 0) [2021-10-24 10:22:10,898 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((y <= b + r && 1 == cond) && x == b + r) && r < b) && b == a * y) && a == 1) && q == 1) && y <= 1) || ((((((((((((((((((((((0 <= "0" && \old(cond) == cond) && 1 <= cond) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && 0 <= r) && 1 <= y) && b == a * y) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0) [2021-10-24 10:22:10,899 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((0 <= "0" && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && cond <= 1) && 1 <= b) && b == a * y) && a == 1) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && r <= 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0 [2021-10-24 10:22:10,899 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((0 <= "0" && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && cond <= 1) && 1 <= b) && b == a * y) && a == 1) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && r <= 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0 [2021-10-24 10:22:10,899 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && \valid["cohendiv-ll.c"] == 1) && \valid["0"] == 1) && "cohendiv-ll.c" == 0) && \valid["reach_error"] == 1) && 1 <= y) && a == 1) && x == r + q * y) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && y <= r) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && r == x) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond [2021-10-24 10:22:10,899 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && \valid["cohendiv-ll.c"] == 1) && \valid["0"] == 1) && "cohendiv-ll.c" == 0) && \valid["reach_error"] == 1) && 1 <= y) && a == 1) && x == r + q * y) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && y <= r) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && r == x) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond [2021-10-24 10:22:10,913 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:22:10,913 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:22:10,914 INFO L168 Benchmark]: Toolchain (without parser) took 14634.11 ms. Allocated memory was 81.8 MB in the beginning and 218.1 MB in the end (delta: 136.3 MB). Free memory was 45.2 MB in the beginning and 100.0 MB in the end (delta: -54.8 MB). Peak memory consumption was 81.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:22:10,915 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 61.4 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:22:10,915 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.20 ms. Allocated memory was 81.8 MB in the beginning and 117.4 MB in the end (delta: 35.7 MB). Free memory was 45.0 MB in the beginning and 94.4 MB in the end (delta: -49.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:22:10,915 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.51 ms. Allocated memory is still 117.4 MB. Free memory was 94.4 MB in the beginning and 92.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:22:10,916 INFO L168 Benchmark]: Boogie Preprocessor took 50.32 ms. Allocated memory is still 117.4 MB. Free memory was 92.5 MB in the beginning and 91.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:22:10,916 INFO L168 Benchmark]: RCFGBuilder took 568.15 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 75.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:22:10,917 INFO L168 Benchmark]: TraceAbstraction took 13570.61 ms. Allocated memory was 117.4 MB in the beginning and 218.1 MB in the end (delta: 100.7 MB). Free memory was 75.1 MB in the beginning and 104.2 MB in the end (delta: -29.0 MB). Peak memory consumption was 108.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:22:10,917 INFO L168 Benchmark]: Witness Printer took 59.17 ms. Allocated memory is still 218.1 MB. Free memory was 104.2 MB in the beginning and 100.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:22:10,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 61.4 MB in the beginning and 61.4 MB in the end (delta: 39.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.20 ms. Allocated memory was 81.8 MB in the beginning and 117.4 MB in the end (delta: 35.7 MB). Free memory was 45.0 MB in the beginning and 94.4 MB in the end (delta: -49.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.51 ms. Allocated memory is still 117.4 MB. Free memory was 94.4 MB in the beginning and 92.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.32 ms. Allocated memory is still 117.4 MB. Free memory was 92.5 MB in the beginning and 91.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 568.15 ms. Allocated memory is still 117.4 MB. Free memory was 91.3 MB in the beginning and 75.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13570.61 ms. Allocated memory was 117.4 MB in the beginning and 218.1 MB in the end (delta: 100.7 MB). Free memory was 75.1 MB in the beginning and 104.2 MB in the end (delta: -29.0 MB). Peak memory consumption was 108.8 MB. Max. memory is 16.1 GB. * Witness Printer took 59.17 ms. Allocated memory is still 218.1 MB. Free memory was 104.2 MB in the beginning and 100.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 13449.7ms, OverallIterations: 5, TraceHistogramMax: 3, EmptinessCheckTime: 15.8ms, AutomataDifference: 1613.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1238.0ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 56 SDtfs, 217 SDslu, 105 SDs, 0 SdLazy, 260 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 460.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 212 GetRequests, 127 SyntacticMatches, 26 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 5653.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 72.8ms AutomataMinimizationTime, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 21 NumberOfFragments, 721 HoareAnnotationTreeSize, 9 FomulaSimplifications, 126 FormulaSimplificationTreeSizeReduction, 88.6ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 425 FormulaSimplificationTreeSizeReductionInter, 1141.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 41.0ms SsaConstructionTime, 93.6ms SatisfiabilityAnalysisTime, 2213.5ms InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 1303 SizeOfPredicates, 30 NumberOfNonLiveVariables, 440 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 30/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 798, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 19, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 39, TOOLS_POST_TIME[ms]: 355, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME[ms]: 338, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 117, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 57, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 7, DOMAIN_JOIN_TIME[ms]: 378, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 19, DOMAIN_ISBOTTOM_TIME[ms]: 34, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 128, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 128, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 1, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 17, DAG_COMPRESSION_PROCESSED_NODES: 367, DAG_COMPRESSION_RETAINED_NODES: 66, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: b == a * y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && \valid["cohendiv-ll.c"] == 1) && \valid["0"] == 1) && "cohendiv-ll.c" == 0) && \valid["reach_error"] == 1) && 1 <= y) && a == 1) && x == r + q * y) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && y <= r) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && r == x) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((unknown-#StackHeapBarrier-unknown < "reach_error" && \old(cond) == cond) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && \valid["cohendiv-ll.c"] == 1) && \valid["0"] == 1) && "cohendiv-ll.c" == 0) && \valid["reach_error"] == 1) && 1 <= y) && a == 1) && x == r + q * y) && \valid[0] == 0) && unknown-#StackHeapBarrier-unknown < "0") && unknown-#length-unknown["reach_error"] == 12) && unknown-#memory_int-unknown["0"][1 + "0"] == 0) && #NULL == 0) && y <= r) && "reach_error" == 0) && unknown-#length-unknown["0"] == 2) && unknown-#memory_int-unknown["0"]["0"] == 48) && r == x) && 0 == "0") && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) && b == y) && \old(cond) == cond - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((0 <= "0" && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && cond <= 1) && 1 <= b) && b == a * y) && a == 1) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && r <= 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((y <= b + r && 1 == cond) && x == b + r) && r < b) && b == a * y) && a == 1) && q == 1) && y <= 1) || ((((((((((((((((((((((0 <= "0" && \old(cond) == cond) && 1 <= cond) && x <= 1) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && 0 <= r) && 1 <= y) && b == a * y) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: (((((((((((((((((((((0 <= "0" && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) == 1) && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && cond <= 1) && 1 <= b) && b == a * y) && a == 1) && x == r + q * y) && 0 <= "reach_error") && #NULL == 0) && r <= 1) && 1 <= x) && "reach_error" == 0) && cond <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && 0 == "0") && #NULL == 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((0 <= "0" && 1 <= cond) && \old(cond) <= 1) && 0 <= "cohendiv-ll.c") && #NULL <= 0) && 0 <= "cohendiv-ll.c") && 1 <= y) && b == a * y) && q == 0) && 0 <= "reach_error") && 1 <= \old(cond)) && r <= 1) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= #NULL) && 0 <= a) && 0 <= x) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && "cohendiv-ll.c" <= 0) && 0 == "0") && #NULL == 0) || (((((((y <= b + r && 1 <= cond) && x == b + r) && r < b) && b == a * y) && a == q) && a == 1) && y <= 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((y <= b + r && 1 <= cond) && 1 == cond) && x == b + r) && r < b) && b == a * y) && a == 1) && q == 1) && y <= 1) || (((((((((((((((((((((((((0 <= "0" && \old(cond) == cond) && 1 <= cond) && 1 <= cond) && \old(cond) == 1) && \old(cond) <= 1) && 0 <= "cohendiv-ll.c") && 0 <= "cohendiv-ll.c") && 0 <= r) && 1 <= y) && b == a * y) && q == 0) && 0 <= "reach_error") && #NULL == 0) && 1 <= \old(cond)) && r <= 1) && "reach_error" == 0) && cond <= 1) && a <= 0) && 0 <= a) && 0 <= unknown-#StackHeapBarrier-unknown) && r == x) && y <= 1) && "cohendiv-ll.c" <= 0) && 0 == "0") && #NULL == 0) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:22:10,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8397d839-6ca7-4844-a514-6d3547178a86/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...