./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/sqrt1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/sqrt1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs --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 5a667cf640b9cf5657756f4ca44157e13471ed71aebfaf7ff11f9d5251db37ae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:50:07,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:50:07,782 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:50:07,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:50:07,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:50:07,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:50:07,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:50:07,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:50:07,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:50:07,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:50:07,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:50:07,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:50:07,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:50:07,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:50:07,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:50:07,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:50:07,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:50:07,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:50:07,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:50:07,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:50:07,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:50:07,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:50:07,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:50:07,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:50:07,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:50:07,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:50:07,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:50:07,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:50:07,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:50:07,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:50:07,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:50:07,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:50:07,916 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:50:07,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:50:07,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:50:07,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:50:07,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:50:07,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:50:07,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:50:07,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:50:07,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:50:07,924 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:50:07,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:50:07,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:50:07,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:50:07,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:50:07,968 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:50:07,969 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:50:07,969 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:50:07,969 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:50:07,976 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:50:07,976 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:50:07,977 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:50:07,978 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:50:07,978 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:50:07,978 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:50:07,979 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:50:07,979 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:50:07,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:50:07,981 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:50:07,981 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:50:07,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:50:07,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:50:07,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:50:07,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:50:07,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:50:07,983 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:50:07,983 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:50:07,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:50:07,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:50:07,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:50:07,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:50:07,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:50:07,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:07,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:50:07,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:50:07,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:50:07,986 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:50:07,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:50:07,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:50:07,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:50:07,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:50:07,988 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_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a667cf640b9cf5657756f4ca44157e13471ed71aebfaf7ff11f9d5251db37ae [2021-11-19 15:50:08,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:50:08,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:50:08,335 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:50:08,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:50:08,342 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:50:08,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/nla-digbench/sqrt1-ll.c [2021-11-19 15:50:08,425 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/data/0cfe4247c/ba48420b51cc4787aa192e7f302e221c/FLAG79868fee2 [2021-11-19 15:50:08,957 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:50:08,958 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/sv-benchmarks/c/nla-digbench/sqrt1-ll.c [2021-11-19 15:50:08,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/data/0cfe4247c/ba48420b51cc4787aa192e7f302e221c/FLAG79868fee2 [2021-11-19 15:50:09,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/data/0cfe4247c/ba48420b51cc4787aa192e7f302e221c [2021-11-19 15:50:09,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:50:09,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:50:09,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:09,325 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:50:09,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:50:09,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dfc8ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09, skipping insertion in model container [2021-11-19 15:50:09,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:50:09,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:50:09,539 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/sv-benchmarks/c/nla-digbench/sqrt1-ll.c[520,533] [2021-11-19 15:50:09,554 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:09,563 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:50:09,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/sv-benchmarks/c/nla-digbench/sqrt1-ll.c[520,533] [2021-11-19 15:50:09,581 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:50:09,596 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:50:09,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09 WrapperNode [2021-11-19 15:50:09,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:50:09,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:09,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:50:09,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:50:09,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,633 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2021-11-19 15:50:09,634 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:50:09,635 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:50:09,635 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:50:09,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:50:09,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:50:09,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:50:09,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:50:09,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:50:09,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (1/1) ... [2021-11-19 15:50:09,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:50:09,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:09,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:50:09,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:50:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:50:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 15:50:09,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:50:09,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:50:09,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:50:09,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:50:09,839 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:50:09,841 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:50:09,994 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:50:10,025 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:50:10,026 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 15:50:10,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:10 BoogieIcfgContainer [2021-11-19 15:50:10,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:50:10,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:50:10,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:50:10,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:50:10,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:50:09" (1/3) ... [2021-11-19 15:50:10,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b355db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:10, skipping insertion in model container [2021-11-19 15:50:10,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:50:09" (2/3) ... [2021-11-19 15:50:10,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b355db5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:50:10, skipping insertion in model container [2021-11-19 15:50:10,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:10" (3/3) ... [2021-11-19 15:50:10,045 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll.c [2021-11-19 15:50:10,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:50:10,051 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:50:10,116 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:50:10,129 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 [2021-11-19 15:50:10,129 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:50:10,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-19 15:50:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 15:50:10,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:10,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 15:50:10,175 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:10,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1808342220, now seen corresponding path program 1 times [2021-11-19 15:50:10,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:10,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713342961] [2021-11-19 15:50:10,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:10,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:10,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:10,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:10,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:10,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713342961] [2021-11-19 15:50:10,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713342961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:10,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:10,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 15:50:10,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659832496] [2021-11-19 15:50:10,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:10,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:50:10,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:50:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:50:10,437 INFO L87 Difference]: Start difference. First operand has 17 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:10,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:10,500 INFO L93 Difference]: Finished difference Result 33 states and 53 transitions. [2021-11-19 15:50:10,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:50:10,503 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 15:50:10,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:10,509 INFO L225 Difference]: With dead ends: 33 [2021-11-19 15:50:10,509 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 15:50:10,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:50:10,534 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:10,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 15:50:10,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 15:50:10,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 8 states have internal predecessors, (9), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-19 15:50:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2021-11-19 15:50:10,595 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 6 [2021-11-19 15:50:10,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:10,596 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2021-11-19 15:50:10,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:10,596 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2021-11-19 15:50:10,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-19 15:50:10,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:10,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-19 15:50:10,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 15:50:10,599 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:10,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:10,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1850079411, now seen corresponding path program 1 times [2021-11-19 15:50:10,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:10,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014347314] [2021-11-19 15:50:10,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:10,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:10,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:10,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:10,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014347314] [2021-11-19 15:50:10,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014347314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:10,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:10,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 15:50:10,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143986742] [2021-11-19 15:50:10,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:10,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:50:10,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:10,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:50:10,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:50:10,771 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:10,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:10,865 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2021-11-19 15:50:10,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:50:10,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-19 15:50:10,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:10,867 INFO L225 Difference]: With dead ends: 29 [2021-11-19 15:50:10,867 INFO L226 Difference]: Without dead ends: 27 [2021-11-19 15:50:10,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:10,870 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:10,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 66 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:10,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-19 15:50:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-11-19 15:50:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-19 15:50:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2021-11-19 15:50:10,883 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 6 [2021-11-19 15:50:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:10,883 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2021-11-19 15:50:10,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:50:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2021-11-19 15:50:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-19 15:50:10,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:10,885 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:10,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 15:50:10,885 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:10,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash -79511534, now seen corresponding path program 1 times [2021-11-19 15:50:10,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:10,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294523308] [2021-11-19 15:50:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:10,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:10,897 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 15:50:10,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709861484] [2021-11-19 15:50:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:10,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:10,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:10,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:50:10,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 15:50:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:10,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:50:10,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:11,088 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:11,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:50:11,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:11,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294523308] [2021-11-19 15:50:11,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:50:11,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709861484] [2021-11-19 15:50:11,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709861484] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:11,219 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:11,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-19 15:50:11,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151693957] [2021-11-19 15:50:11,219 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:11,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:50:11,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:50:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:11,221 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 15:50:11,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:11,322 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2021-11-19 15:50:11,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:50:11,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2021-11-19 15:50:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:11,324 INFO L225 Difference]: With dead ends: 33 [2021-11-19 15:50:11,324 INFO L226 Difference]: Without dead ends: 31 [2021-11-19 15:50:11,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:50:11,326 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:11,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 87 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:11,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-19 15:50:11,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-11-19 15:50:11,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 15:50:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-11-19 15:50:11,347 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 11 [2021-11-19 15:50:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:11,347 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-11-19 15:50:11,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 15:50:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-11-19 15:50:11,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 15:50:11,349 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:11,349 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:11,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:11,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:11,552 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:11,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:11,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1833643475, now seen corresponding path program 1 times [2021-11-19 15:50:11,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:11,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662778863] [2021-11-19 15:50:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:11,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:11,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 15:50:11,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962486196] [2021-11-19 15:50:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:11,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:11,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:11,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:50:11,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 15:50:11,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:11,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:50:11,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:11,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:50:11,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:11,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-19 15:50:11,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:11,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662778863] [2021-11-19 15:50:11,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:50:11,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962486196] [2021-11-19 15:50:11,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962486196] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:50:11,919 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:50:11,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-11-19 15:50:11,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133332291] [2021-11-19 15:50:11,920 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:11,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:50:11,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:50:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:50:11,922 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:50:11,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:11,990 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2021-11-19 15:50:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:50:11,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 16 [2021-11-19 15:50:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:11,992 INFO L225 Difference]: With dead ends: 37 [2021-11-19 15:50:11,992 INFO L226 Difference]: Without dead ends: 31 [2021-11-19 15:50:11,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:50:11,994 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:11,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 76 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:11,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-19 15:50:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-19 15:50:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-19 15:50:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-19 15:50:12,005 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 16 [2021-11-19 15:50:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:12,005 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-19 15:50:12,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-19 15:50:12,006 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-19 15:50:12,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 15:50:12,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:12,007 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:12,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:12,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:12,222 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:12,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:12,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1130672272, now seen corresponding path program 1 times [2021-11-19 15:50:12,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:12,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414442915] [2021-11-19 15:50:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:12,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:12,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 15:50:12,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982922749] [2021-11-19 15:50:12,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:12,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:12,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:12,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:50:12,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 15:50:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:50:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 15:50:12,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 15:50:12,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:12,506 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 15:50:12,506 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:12,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414442915] [2021-11-19 15:50:12,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:50:12,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982922749] [2021-11-19 15:50:12,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982922749] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:50:12,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:50:12,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-11-19 15:50:12,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373236275] [2021-11-19 15:50:12,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:50:12,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:50:12,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:50:12,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:50:12,510 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 15:50:12,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:12,580 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2021-11-19 15:50:12,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:50:12,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-11-19 15:50:12,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:12,586 INFO L225 Difference]: With dead ends: 37 [2021-11-19 15:50:12,586 INFO L226 Difference]: Without dead ends: 35 [2021-11-19 15:50:12,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:50:12,590 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:12,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:50:12,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-19 15:50:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-19 15:50:12,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-19 15:50:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-11-19 15:50:12,616 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 23 [2021-11-19 15:50:12,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:12,617 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-11-19 15:50:12,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-19 15:50:12,618 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-11-19 15:50:12,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 15:50:12,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:50:12,620 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:50:12,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:12,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:12,834 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:50:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:50:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1725011793, now seen corresponding path program 2 times [2021-11-19 15:50:12,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 15:50:12,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761254880] [2021-11-19 15:50:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:50:12,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 15:50:12,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 15:50:12,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753609005] [2021-11-19 15:50:12,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:50:12,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:50:12,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:50:12,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:50:12,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 15:50:12,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 15:50:12,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:50:12,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 15:50:12,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:50:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 15:50:13,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:50:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 15:50:13,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 15:50:13,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761254880] [2021-11-19 15:50:13,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:50:13,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753609005] [2021-11-19 15:50:13,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753609005] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:50:13,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1933041020] [2021-11-19 15:50:13,236 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2021-11-19 15:50:13,236 INFO L166 IcfgInterpreter]: Building call graph [2021-11-19 15:50:13,241 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-19 15:50:13,247 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-19 15:50:13,247 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-19 15:50:13,286 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:13,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,311 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-19 15:50:13,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:13,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 83 [2021-11-19 15:50:13,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,480 INFO L180 QuantifierPusher]: treesize reduction 31, result has 78.6 percent of original size [2021-11-19 15:50:13,490 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:13,497 INFO L180 QuantifierPusher]: treesize reduction 31, result has 79.6 percent of original size [2021-11-19 15:50:13,510 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-19 15:50:13,522 INFO L180 QuantifierPusher]: treesize reduction 31, result has 78.6 percent of original size [2021-11-19 15:50:13,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:13,538 INFO L180 QuantifierPusher]: treesize reduction 31, result has 79.6 percent of original size [2021-11-19 15:50:13,545 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-19 15:50:13,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,622 INFO L180 QuantifierPusher]: treesize reduction 35, result has 78.5 percent of original size [2021-11-19 15:50:13,630 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:13,643 INFO L180 QuantifierPusher]: treesize reduction 35, result has 79.4 percent of original size [2021-11-19 15:50:13,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 15:50:13,660 INFO L180 QuantifierPusher]: treesize reduction 35, result has 78.5 percent of original size [2021-11-19 15:50:13,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:13,678 INFO L180 QuantifierPusher]: treesize reduction 35, result has 79.4 percent of original size [2021-11-19 15:50:13,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 105 [2021-11-19 15:50:13,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,721 INFO L180 QuantifierPusher]: treesize reduction 33, result has 79.0 percent of original size [2021-11-19 15:50:13,728 INFO L185 QuantifierPusher]: treesize reduction 12, result has 87.6 percent of original size 85 [2021-11-19 15:50:13,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:13,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,797 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:13,801 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,819 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 149 [2021-11-19 15:50:13,822 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:13,834 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-11-19 15:50:13,853 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-19 15:50:13,855 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:13,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,872 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-19 15:50:13,882 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:13,885 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,890 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:13,902 INFO L185 QuantifierPusher]: treesize reduction 15, result has 80.5 percent of original size 62 [2021-11-19 15:50:13,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-19 15:50:13,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,943 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:13,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:13,964 INFO L185 QuantifierPusher]: treesize reduction 3, result has 98.0 percent of original size 149 [2021-11-19 15:50:13,965 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:13,975 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.3 percent of original size [2021-11-19 15:50:14,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 182 [2021-11-19 15:50:14,003 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-19 15:50:14,029 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,038 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:14,040 INFO L185 QuantifierPusher]: treesize reduction 15, result has 80.5 percent of original size 62 [2021-11-19 15:50:14,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,055 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 194 [2021-11-19 15:50:14,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,175 INFO L180 QuantifierPusher]: treesize reduction 31, result has 87.9 percent of original size [2021-11-19 15:50:14,179 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,200 INFO L185 QuantifierPusher]: treesize reduction 15, result has 91.4 percent of original size 159 [2021-11-19 15:50:14,202 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,213 INFO L180 QuantifierPusher]: treesize reduction 15, result has 92.8 percent of original size [2021-11-19 15:50:14,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-19 15:50:14,246 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-19 15:50:14,278 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,281 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,286 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:14,288 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.2 percent of original size 62 [2021-11-19 15:50:14,308 INFO L180 QuantifierPusher]: treesize reduction 31, result has 88.3 percent of original size [2021-11-19 15:50:14,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-11-19 15:50:14,338 INFO L180 QuantifierPusher]: treesize reduction 31, result has 87.9 percent of original size [2021-11-19 15:50:14,346 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,371 INFO L185 QuantifierPusher]: treesize reduction 15, result has 91.4 percent of original size 159 [2021-11-19 15:50:14,372 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,383 INFO L180 QuantifierPusher]: treesize reduction 15, result has 92.8 percent of original size [2021-11-19 15:50:14,404 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-19 15:50:14,405 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,409 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,423 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-19 15:50:14,429 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:14,437 INFO L185 QuantifierPusher]: treesize reduction 6, result has 91.2 percent of original size 62 [2021-11-19 15:50:14,449 INFO L180 QuantifierPusher]: treesize reduction 31, result has 88.3 percent of original size [2021-11-19 15:50:14,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-11-19 15:50:14,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,590 INFO L180 QuantifierPusher]: treesize reduction 14, result has 94.9 percent of original size [2021-11-19 15:50:14,596 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-19 15:50:14,612 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,634 INFO L185 QuantifierPusher]: treesize reduction 29, result has 86.4 percent of original size 185 [2021-11-19 15:50:14,635 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,645 INFO L180 QuantifierPusher]: treesize reduction 29, result has 86.9 percent of original size [2021-11-19 15:50:14,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-11-19 15:50:14,663 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,666 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-19 15:50:14,672 INFO L185 QuantifierPusher]: treesize reduction 15, result has 80.5 percent of original size 62 [2021-11-19 15:50:14,685 INFO L180 QuantifierPusher]: treesize reduction 14, result has 95.0 percent of original size [2021-11-19 15:50:14,692 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-11-19 15:50:14,705 INFO L180 QuantifierPusher]: treesize reduction 14, result has 94.9 percent of original size [2021-11-19 15:50:14,712 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,729 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-11-19 15:50:14,730 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,740 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-19 15:50:14,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 145 [2021-11-19 15:50:14,754 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,757 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,774 INFO L185 QuantifierPusher]: treesize reduction 29, result has 85.9 percent of original size 176 [2021-11-19 15:50:14,786 INFO L185 QuantifierPusher]: treesize reduction 15, result has 80.5 percent of original size 62 [2021-11-19 15:50:14,798 INFO L180 QuantifierPusher]: treesize reduction 14, result has 95.0 percent of original size [2021-11-19 15:50:14,805 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-11-19 15:50:14,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,876 INFO L180 QuantifierPusher]: treesize reduction 24, result has 91.7 percent of original size [2021-11-19 15:50:14,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 310 [2021-11-19 15:50:14,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:14,956 INFO L180 QuantifierPusher]: treesize reduction 12, result has 81.3 percent of original size [2021-11-19 15:50:14,959 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,963 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,973 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:14,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:14,976 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:14,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:14,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:14,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:14,990 INFO L180 QuantifierPusher]: treesize reduction 12, result has 83.1 percent of original size [2021-11-19 15:50:14,997 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 15:50:15,003 INFO L180 QuantifierPusher]: treesize reduction 12, result has 81.3 percent of original size [2021-11-19 15:50:15,006 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,009 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,010 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,015 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,017 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:15,022 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,025 INFO L180 QuantifierPusher]: treesize reduction 12, result has 83.1 percent of original size [2021-11-19 15:50:15,029 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 15:50:15,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,050 INFO L180 QuantifierPusher]: treesize reduction 10, result has 86.7 percent of original size [2021-11-19 15:50:15,054 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,057 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,059 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,063 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,064 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,066 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,069 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:15,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,074 INFO L180 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-11-19 15:50:15,078 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 15:50:15,082 INFO L180 QuantifierPusher]: treesize reduction 10, result has 86.7 percent of original size [2021-11-19 15:50:15,085 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,086 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,090 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,091 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,094 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,098 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:15,104 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,106 INFO L180 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-11-19 15:50:15,110 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 15:50:15,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,132 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.9 percent of original size [2021-11-19 15:50:15,138 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,140 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 15:50:15,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,149 INFO L180 QuantifierPusher]: treesize reduction 14, result has 86.0 percent of original size [2021-11-19 15:50:15,153 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-19 15:50:15,157 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.9 percent of original size [2021-11-19 15:50:15,164 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,165 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 15:50:15,171 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,175 INFO L180 QuantifierPusher]: treesize reduction 14, result has 86.0 percent of original size [2021-11-19 15:50:15,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-19 15:50:15,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,190 INFO L180 QuantifierPusher]: treesize reduction 12, result has 86.2 percent of original size [2021-11-19 15:50:15,193 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-19 15:50:15,199 INFO L180 QuantifierPusher]: treesize reduction 12, result has 81.3 percent of original size [2021-11-19 15:50:15,201 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,204 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,215 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:15,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,221 INFO L180 QuantifierPusher]: treesize reduction 12, result has 83.1 percent of original size [2021-11-19 15:50:15,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 15:50:15,228 INFO L180 QuantifierPusher]: treesize reduction 12, result has 81.3 percent of original size [2021-11-19 15:50:15,231 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,236 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,237 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,238 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:15,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,247 INFO L180 QuantifierPusher]: treesize reduction 12, result has 83.1 percent of original size [2021-11-19 15:50:15,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-19 15:50:15,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,289 INFO L180 QuantifierPusher]: treesize reduction 10, result has 86.7 percent of original size [2021-11-19 15:50:15,293 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,294 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,295 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,302 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:15,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,309 INFO L180 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-11-19 15:50:15,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 15:50:15,317 INFO L180 QuantifierPusher]: treesize reduction 10, result has 86.7 percent of original size [2021-11-19 15:50:15,321 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,323 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,327 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,329 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,333 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:15,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,337 INFO L180 QuantifierPusher]: treesize reduction 10, result has 87.8 percent of original size [2021-11-19 15:50:15,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-11-19 15:50:15,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,390 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.9 percent of original size [2021-11-19 15:50:15,397 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 15:50:15,406 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,410 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.9 percent of original size [2021-11-19 15:50:15,415 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,435 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 15:50:15,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,441 INFO L180 QuantifierPusher]: treesize reduction 14, result has 86.0 percent of original size [2021-11-19 15:50:15,445 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-19 15:50:15,449 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.9 percent of original size [2021-11-19 15:50:15,454 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,455 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-11-19 15:50:15,462 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,465 INFO L180 QuantifierPusher]: treesize reduction 14, result has 86.0 percent of original size [2021-11-19 15:50:15,473 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-19 15:50:15,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,487 INFO L180 QuantifierPusher]: treesize reduction 10, result has 86.7 percent of original size [2021-11-19 15:50:15,491 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,494 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,495 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,501 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:15,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,519 INFO L180 QuantifierPusher]: treesize reduction 12, result has 81.3 percent of original size [2021-11-19 15:50:15,521 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,523 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,527 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,528 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-19 15:50:15,529 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-19 15:50:15,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 15:50:15,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-19 15:50:15,540 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-19 15:50:15,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-19 15:50:15,550 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 21 for LOIs [2021-11-19 15:50:15,556 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-19 15:50:20,825 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:50:20,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:50:20,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-11-19 15:50:20,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700320549] [2021-11-19 15:50:20,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 15:50:20,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:50:20,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 15:50:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:50:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2021-11-19 15:50:20,828 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 15:50:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:50:21,005 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2021-11-19 15:50:21,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:50:21,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-11-19 15:50:21,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:50:21,007 INFO L225 Difference]: With dead ends: 42 [2021-11-19 15:50:21,007 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 15:50:21,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=67, Invalid=274, Unknown=1, NotChecked=0, Total=342 [2021-11-19 15:50:21,010 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:50:21,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:50:21,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 15:50:21,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 15:50:21,013 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) [2021-11-19 15:50:21,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 15:50:21,013 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-11-19 15:50:21,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:50:21,014 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 15:50:21,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-11-19 15:50:21,014 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 15:50:21,014 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 15:50:21,017 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 15:50:21,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:50:21,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-19 15:50:21,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 15:50:21,799 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 15:50:21,799 INFO L854 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* 4 |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1))) [2021-11-19 15:50:21,799 INFO L854 garLoopResultBuilder]: At program point L29-2(lines 29 41) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* 4 |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1))) [2021-11-19 15:50:21,800 INFO L854 garLoopResultBuilder]: At program point L29-3(lines 29 41) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* 4 |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1))) [2021-11-19 15:50:21,800 INFO L854 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (= (* 4 |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1)) [2021-11-19 15:50:21,800 INFO L858 garLoopResultBuilder]: For program point L32(lines 29 41) no Hoare annotation was computed. [2021-11-19 15:50:21,800 INFO L854 garLoopResultBuilder]: At program point L30(line 30) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* 4 |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1))) [2021-11-19 15:50:21,800 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 15:50:21,800 INFO L854 garLoopResultBuilder]: At program point L30-1(line 30) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* 4 |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1))) [2021-11-19 15:50:21,801 INFO L861 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: true [2021-11-19 15:50:21,801 INFO L854 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (and (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|))) (= (* 4 |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (* 2 |ULTIMATE.start_main_~t~0#1|) 1))) [2021-11-19 15:50:21,801 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-11-19 15:50:21,801 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-19 15:50:21,801 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-19 15:50:21,801 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-11-19 15:50:21,801 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-11-19 15:50:21,802 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-19 15:50:21,805 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-11-19 15:50:21,806 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 15:50:21,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 03:50:21 BoogieIcfgContainer [2021-11-19 15:50:21,822 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 15:50:21,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 15:50:21,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 15:50:21,822 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 15:50:21,823 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:50:10" (3/4) ... [2021-11-19 15:50:21,825 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 15:50:21,831 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-19 15:50:21,835 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-19 15:50:21,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-19 15:50:21,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-19 15:50:21,836 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 15:50:21,875 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 15:50:21,875 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 15:50:21,876 INFO L158 Benchmark]: Toolchain (without parser) took 12555.45ms. Allocated memory was 86.0MB in the beginning and 159.4MB in the end (delta: 73.4MB). Free memory was 51.1MB in the beginning and 62.3MB in the end (delta: -11.2MB). Peak memory consumption was 61.0MB. Max. memory is 16.1GB. [2021-11-19 15:50:21,876 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory was 55.2MB in the beginning and 55.1MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:50:21,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.54ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 50.8MB in the beginning and 84.8MB in the end (delta: -34.0MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-11-19 15:50:21,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.62ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 83.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:50:21,877 INFO L158 Benchmark]: Boogie Preprocessor took 29.08ms. Allocated memory is still 109.1MB. Free memory was 83.5MB in the beginning and 82.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:50:21,877 INFO L158 Benchmark]: RCFGBuilder took 364.99ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 72.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 15:50:21,877 INFO L158 Benchmark]: TraceAbstraction took 11789.71ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 72.3MB in the beginning and 65.4MB in the end (delta: 6.9MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2021-11-19 15:50:21,877 INFO L158 Benchmark]: Witness Printer took 53.39ms. Allocated memory is still 159.4MB. Free memory was 65.4MB in the beginning and 62.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 15:50:21,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory was 55.2MB in the beginning and 55.1MB in the end (delta: 25.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.54ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 50.8MB in the beginning and 84.8MB in the end (delta: -34.0MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.62ms. Allocated memory is still 109.1MB. Free memory was 84.8MB in the beginning and 83.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.08ms. Allocated memory is still 109.1MB. Free memory was 83.5MB in the beginning and 82.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 364.99ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 72.7MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11789.71ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 72.3MB in the beginning and 65.4MB in the end (delta: 6.9MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. * Witness Printer took 53.39ms. Allocated memory is still 159.4MB. Free memory was 65.4MB in the beginning and 62.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.7s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 331 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 237 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 194 IncrementalHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 104 mSDtfsCounter, 194 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 148 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 31 PreInvPairs, 52 NumberOfFragments, 134 HoareAnnotationTreeSize, 31 FomulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 494 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 562 SizeOfPredicates, 5 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 122/130 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: t == 1 + 2 * a && 4 * s == t * t + 2 * t + 1 RESULT: Ultimate proved your program to be correct! [2021-11-19 15:50:21,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_476a56cc-4903-48dc-83f7-bf2682bb504f/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE