./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan --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 a8da7bb6495346e44a0ef3b7d50d5e0fbdae8843 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:43:48,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:43:48,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:43:48,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:43:48,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:43:48,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:43:48,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:43:48,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:43:48,816 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:43:48,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:43:48,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:43:48,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:43:48,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:43:48,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:43:48,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:43:48,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:43:48,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:43:48,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:43:48,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:43:48,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:43:48,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:43:48,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:43:48,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:43:48,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:43:48,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:43:48,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:43:48,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:43:48,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:43:48,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:43:48,843 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:43:48,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:43:48,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:43:48,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:43:48,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:43:48,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:43:48,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:43:48,850 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:43:48,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:43:48,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:43:48,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:43:48,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:43:48,853 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:43:48,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:43:48,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:43:48,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:43:48,878 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:43:48,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:43:48,878 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:43:48,878 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:43:48,878 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:43:48,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:43:48,879 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:43:48,879 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:43:48,879 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:43:48,879 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:43:48,880 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:43:48,880 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:43:48,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:43:48,881 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:43:48,881 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:43:48,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:43:48,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:43:48,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:43:48,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:43:48,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:43:48,882 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:43:48,882 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:43:48,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:43:48,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:43:48,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:43:48,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:43:48,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:43:48,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:43:48,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:48,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:43:48,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:43:48,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:43:48,884 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:43:48,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:43:48,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:43:48,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:43:48,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:43:48,885 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-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8da7bb6495346e44a0ef3b7d50d5e0fbdae8843 [2020-11-28 07:43:49,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:43:49,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:43:49,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:43:49,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:43:49,209 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:43:49,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c [2020-11-28 07:43:49,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/data/026a5bba9/10700a6d1d8942418cd5077d02d3dcd5/FLAG627a096a5 [2020-11-28 07:43:49,722 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:43:49,723 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound1.c [2020-11-28 07:43:49,735 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/data/026a5bba9/10700a6d1d8942418cd5077d02d3dcd5/FLAG627a096a5 [2020-11-28 07:43:50,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/data/026a5bba9/10700a6d1d8942418cd5077d02d3dcd5 [2020-11-28 07:43:50,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:43:50,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:43:50,128 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:50,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:43:50,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:43:50,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb009bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50, skipping insertion in model container [2020-11-28 07:43:50,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:43:50,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:43:50,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:50,354 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:43:50,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:43:50,387 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:43:50,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50 WrapperNode [2020-11-28 07:43:50,388 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:43:50,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:50,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:43:50,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:43:50,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:43:50,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:43:50,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:43:50,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:43:50,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... [2020-11-28 07:43:50,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:43:50,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:43:50,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:43:50,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:43:50,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:43:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:43:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:43:50,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:43:50,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:43:50,991 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:43:50,992 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-28 07:43:50,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:50 BoogieIcfgContainer [2020-11-28 07:43:50,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:43:50,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:43:50,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:43:51,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:43:51,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:43:50" (1/3) ... [2020-11-28 07:43:51,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b01f6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:51, skipping insertion in model container [2020-11-28 07:43:51,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:43:50" (2/3) ... [2020-11-28 07:43:51,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b01f6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:43:51, skipping insertion in model container [2020-11-28 07:43:51,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:50" (3/3) ... [2020-11-28 07:43:51,006 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound1.c [2020-11-28 07:43:51,014 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:43:51,018 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 07:43:51,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:43:51,050 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:43:51,050 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:43:51,050 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:43:51,050 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:43:51,051 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:43:51,051 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:43:51,051 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:43:51,051 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:43:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-28 07:43:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:43:51,070 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:51,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:43:51,071 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:51,077 INFO L82 PathProgramCache]: Analyzing trace with hash 118951587, now seen corresponding path program 1 times [2020-11-28 07:43:51,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:51,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819024301] [2020-11-28 07:43:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:51,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819024301] [2020-11-28 07:43:51,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:51,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:43:51,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337750822] [2020-11-28 07:43:51,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:43:51,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:51,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:43:51,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:43:51,233 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-28 07:43:51,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:51,250 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-11-28 07:43:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:43:51,251 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-28 07:43:51,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:51,259 INFO L225 Difference]: With dead ends: 57 [2020-11-28 07:43:51,259 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 07:43:51,262 INFO L677 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 [2020-11-28 07:43:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 07:43:51,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 07:43:51,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 07:43:51,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-28 07:43:51,293 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-11-28 07:43:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:51,294 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-28 07:43:51,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:43:51,294 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-28 07:43:51,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 07:43:51,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:51,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 07:43:51,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:43:51,297 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:51,299 INFO L82 PathProgramCache]: Analyzing trace with hash 117507718, now seen corresponding path program 1 times [2020-11-28 07:43:51,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:51,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656753042] [2020-11-28 07:43:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:51,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:51,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656753042] [2020-11-28 07:43:51,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:51,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:43:51,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858173423] [2020-11-28 07:43:51,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:43:51,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:51,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:43:51,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:43:51,469 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-11-28 07:43:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:51,610 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-28 07:43:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:51,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 07:43:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:51,612 INFO L225 Difference]: With dead ends: 30 [2020-11-28 07:43:51,612 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 07:43:51,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:51,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 07:43:51,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-11-28 07:43:51,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:43:51,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-28 07:43:51,619 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-11-28 07:43:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:51,620 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-28 07:43:51,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:43:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-28 07:43:51,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:43:51,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:51,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:51,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:43:51,621 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:51,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:51,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1255953641, now seen corresponding path program 1 times [2020-11-28 07:43:51,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:51,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316807704] [2020-11-28 07:43:51,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:51,637 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:51,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141423128] [2020-11-28 07:43:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:51,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:43:51,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:51,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:51,924 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:43:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:51,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316807704] [2020-11-28 07:43:51,947 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:51,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141423128] [2020-11-28 07:43:51,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:51,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:43:51,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772775337] [2020-11-28 07:43:51,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:51,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:51,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:51,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:51,950 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-28 07:43:52,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:52,057 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-11-28 07:43:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:43:52,057 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 07:43:52,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:52,058 INFO L225 Difference]: With dead ends: 45 [2020-11-28 07:43:52,058 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 07:43:52,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:43:52,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 07:43:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-11-28 07:43:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 07:43:52,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-28 07:43:52,067 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 7 [2020-11-28 07:43:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:52,067 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-28 07:43:52,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-28 07:43:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:43:52,068 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:52,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:52,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:43:52,293 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:52,293 INFO L82 PathProgramCache]: Analyzing trace with hash 85825548, now seen corresponding path program 1 times [2020-11-28 07:43:52,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:52,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971752236] [2020-11-28 07:43:52,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:52,306 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:52,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250600977] [2020-11-28 07:43:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:52,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:43:52,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:52,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:52,394 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:43:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:52,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971752236] [2020-11-28 07:43:52,420 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:52,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250600977] [2020-11-28 07:43:52,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:43:52,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:43:52,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828716495] [2020-11-28 07:43:52,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:43:52,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:52,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:43:52,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:43:52,422 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-11-28 07:43:54,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:54,688 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-11-28 07:43:54,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:43:54,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:43:54,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:54,690 INFO L225 Difference]: With dead ends: 63 [2020-11-28 07:43:54,690 INFO L226 Difference]: Without dead ends: 50 [2020-11-28 07:43:54,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:43:54,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-28 07:43:54,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2020-11-28 07:43:54,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-28 07:43:54,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-11-28 07:43:54,699 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 9 [2020-11-28 07:43:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:54,699 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-11-28 07:43:54,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:43:54,700 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-11-28 07:43:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:43:54,700 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:54,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:54,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:54,917 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:54,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:54,917 INFO L82 PathProgramCache]: Analyzing trace with hash -349771845, now seen corresponding path program 1 times [2020-11-28 07:43:54,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:54,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397946432] [2020-11-28 07:43:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:54,929 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:54,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956107913] [2020-11-28 07:43:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:54,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 07:43:54,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:55,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:55,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397946432] [2020-11-28 07:43:55,030 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:55,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956107913] [2020-11-28 07:43:55,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [44596694] [2020-11-28 07:43:55,051 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-11-28 07:43:55,051 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:43:55,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:43:55,061 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:43:55,061 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:43:55,662 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:43:56,070 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2020-11-28 07:43:56,429 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-11-28 07:43:56,652 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 43 [2020-11-28 07:43:57,055 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2020-11-28 07:43:57,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:43:57,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 8 [2020-11-28 07:43:57,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122354878] [2020-11-28 07:43:57,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:57,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:57,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:57,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:43:57,239 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-11-28 07:43:57,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:57,439 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2020-11-28 07:43:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:43:57,440 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-28 07:43:57,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:43:57,441 INFO L225 Difference]: With dead ends: 57 [2020-11-28 07:43:57,441 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 07:43:57,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:43:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 07:43:57,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2020-11-28 07:43:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 07:43:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-11-28 07:43:57,459 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 15 [2020-11-28 07:43:57,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:43:57,464 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-11-28 07:43:57,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:43:57,464 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-11-28 07:43:57,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:43:57,465 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:43:57,465 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:43:57,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:57,681 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:43:57,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:43:57,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2018301833, now seen corresponding path program 1 times [2020-11-28 07:43:57,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:43:57,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375422495] [2020-11-28 07:43:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:43:57,689 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:43:57,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [714415352] [2020-11-28 07:43:57,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:43:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:43:57,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 07:43:57,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:43:57,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:57,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:43:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:43:57,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375422495] [2020-11-28 07:43:57,848 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:43:57,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714415352] [2020-11-28 07:43:57,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1261603559] [2020-11-28 07:43:57,851 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2020-11-28 07:43:57,851 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:43:57,851 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:43:57,851 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:43:57,851 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:43:58,280 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:43:58,650 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-11-28 07:43:59,088 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-11-28 07:43:59,349 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-11-28 07:43:59,689 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-11-28 07:43:59,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:43:59,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 10 [2020-11-28 07:43:59,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621956204] [2020-11-28 07:43:59,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:43:59,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:43:59,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:43:59,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:43:59,817 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 6 states. [2020-11-28 07:43:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:43:59,999 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-11-28 07:44:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:44:00,001 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:44:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:00,001 INFO L225 Difference]: With dead ends: 33 [2020-11-28 07:44:00,001 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:44:00,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 9 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-11-28 07:44:00,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:44:00,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:44:00,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:44:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:44:00,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-28 07:44:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:00,002 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:44:00,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:44:00,003 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:44:00,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:44:00,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-28 07:44:00,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:44:00,529 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 54 [2020-11-28 07:44:00,877 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2020-11-28 07:44:01,138 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-11-28 07:44:01,315 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-11-28 07:44:01,539 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-11-28 07:44:01,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:44:01,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:44:01,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:44:01,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:44:01,541 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:44:01,541 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:44:01,542 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= ULTIMATE.start_main_~s~0 1) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (= 0 |#t~string4.offset|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) (= 11 (select |#length| |#t~string5.base|)) (= 2 (select |#length| |#t~string4.base|)) (= |#NULL.base| 0) (= ULTIMATE.start_main_~a~0 0) (<= ULTIMATE.start_main_~n~0 2147483647) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse0 |#t~string4.offset|)) (<= 1 ULTIMATE.start_main_~t~0) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (= ~counter~0 1) (< 0 |#StackHeapBarrier|) (<= ULTIMATE.start_main_~t~0 1) (= |#t~string6.offset| 0) (= (select .cse0 (+ |#t~string4.offset| 1)) 0))) [2020-11-28 07:44:01,542 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:44:01,542 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= ULTIMATE.start_main_~s~0 1) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (= 0 |#t~string4.offset|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) (= 11 (select |#length| |#t~string5.base|)) (= 2 (select |#length| |#t~string4.base|)) (= |#NULL.base| 0) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~a~0 0) (<= ULTIMATE.start_main_~n~0 2147483647) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse0 |#t~string4.offset|)) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (= ~counter~0 1) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse0 (+ |#t~string4.offset| 1)) 0))) [2020-11-28 07:44:01,543 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:44:01,543 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (select |#memory_int| |#t~string4.base|))) (and (= |ULTIMATE.start___VERIFIER_assert_#in~cond| ULTIMATE.start___VERIFIER_assert_~cond) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (= (select |#valid| |#t~string4.base|) 1) (= |#t~string5.offset| 0) (= ULTIMATE.start_main_~s~0 1) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (= 0 |#t~string4.offset|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) (= 11 (select |#length| |#t~string5.base|)) (= 2 (select |#length| |#t~string4.base|)) (= |#NULL.base| 0) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~a~0 0) (<= ULTIMATE.start_main_~n~0 2147483647) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse0 |#t~string4.offset|)) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (= ~counter~0 1) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse0 (+ |#t~string4.offset| 1)) 0))) [2020-11-28 07:44:01,543 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:44:01,543 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (or (and (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|) (<= 4 ULTIMATE.start_main_~s~0) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= |#NULL.base| 0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~n~0 2147483647) (<= ~counter~0 2) (<= 2 ~counter~0) (<= 0 |#t~string4.base|) (<= 1 ULTIMATE.start_main_~n~0) (<= 0 |#t~string6.base|) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_main_~s~0 4) (= |#NULL.offset| 0) (<= 3 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~a~0 1) (= |#t~string6.offset| 0) (= 0 |#t~string4.offset|) (<= 0 |#StackHeapBarrier|)) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1))) [2020-11-28 07:44:01,543 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ (* ULTIMATE.start_main_~a~0 2) 1) ULTIMATE.start_main_~t~0)) [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L277 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:44:01,544 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-11-28 07:44:01,545 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (and (= |#t~string5.offset| 0) (let ((.cse0 (<= |#NULL.base| 0)) (.cse1 (<= ULTIMATE.start_main_~n~0 2147483647)) (.cse2 (<= 0 |#t~string4.base|)) (.cse3 (<= 0 |#t~string6.base|)) (.cse4 (<= 0 |#t~string5.base|)) (.cse5 (<= 0 |#NULL.base|)) (.cse6 (<= 0 |#StackHeapBarrier|))) (or (and (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|) (<= 4 ULTIMATE.start_main_~s~0) (<= ~counter~0 1) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) .cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~a~0) .cse1 .cse2 (<= ULTIMATE.start_main_~t~0 3) (<= 1 ULTIMATE.start_main_~n~0) (<= 1 ~counter~0) .cse3 .cse4 (<= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_main_~s~0 4) .cse5 (<= 3 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~a~0 1) .cse6) (and (<= 0 (+ ULTIMATE.start_main_~n~0 2147483648)) .cse0 (<= ~counter~0 0) (<= ULTIMATE.start_main_~s~0 1) .cse1 .cse2 (<= ULTIMATE.start_main_~a~0 0) (<= 1 ULTIMATE.start_main_~t~0) .cse3 .cse4 (<= 0 ULTIMATE.start_main_~a~0) .cse5 (<= ULTIMATE.start_main_~t~0 1) (<= 0 ~counter~0) (<= 1 ULTIMATE.start_main_~s~0) .cse6))) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (= 0 |#t~string4.offset|)) [2020-11-28 07:44:01,545 INFO L274 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-11-28 07:44:01,545 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:44:01,554 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,555 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,555 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,561 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,561 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,562 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,565 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,565 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,565 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,565 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,566 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,566 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,566 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,566 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,566 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,567 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,567 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,571 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,571 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,573 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,573 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,574 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,574 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,574 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,574 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,574 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,576 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,576 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,577 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,577 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,577 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,577 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,577 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,592 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,593 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,594 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,594 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,594 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,595 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,595 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,595 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,595 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,595 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,595 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,596 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,596 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,598 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,599 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,599 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,599 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,599 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,599 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,599 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,602 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,602 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,603 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,603 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,603 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,603 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,603 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,603 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,604 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,604 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,604 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:44:01 BoogieIcfgContainer [2020-11-28 07:44:01,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:44:01,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:44:01,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:44:01,611 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:44:01,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:43:50" (3/4) ... [2020-11-28 07:44:01,614 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:44:01,623 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-11-28 07:44:01,623 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:44:01,623 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:44:01,624 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:44:01,647 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((("sqrt1-ll.c" == 0 && ((((((((((((((((((((1 <= \old(cond) && 4 <= s) && counter <= 1) && \old(cond) <= 1) && #NULL <= 0) && 1 <= cond) && 1 <= a) && n <= 2147483647) && 0 <= "0") && t <= 3) && 1 <= n) && 1 <= counter) && 0 <= "reach_error") && 0 <= "sqrt1-ll.c") && cond <= 1) && s <= 4) && 0 <= #NULL) && 3 <= t) && a <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((((0 <= n + 2147483648 && #NULL <= 0) && counter <= 0) && s <= 1) && n <= 2147483647) && 0 <= "0") && a <= 0) && 1 <= t) && 0 <= "reach_error") && 0 <= "sqrt1-ll.c") && 0 <= a) && 0 <= #NULL) && t <= 1) && 0 <= counter) && 1 <= s) && 0 <= unknown-#StackHeapBarrier-unknown))) && #NULL == 0) && "reach_error" == 0) && 0 == "0" [2020-11-28 07:44:01,647 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((1 <= \old(cond) && 4 <= s) && \old(cond) <= 1) && #NULL == 0) && 1 <= cond) && a * 2 + 1 == t) && n <= 2147483647) && counter <= 2) && 2 <= counter) && 0 <= "0") && 1 <= n) && 0 <= "reach_error") && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && s <= 4) && #NULL == 0) && 3 <= t) && a <= 1) && "reach_error" == 0) && 0 == "0") && 0 <= unknown-#StackHeapBarrier-unknown) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) [2020-11-28 07:44:01,648 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((\old(cond) == cond && \valid[0] == 0) && \valid["sqrt1-ll.c"] == 1) && \valid["0"] == 1) && "sqrt1-ll.c" == 0) && s == 1) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "sqrt1-ll.c") && #NULL == 0) && 0 == "0") && \old(cond) == 1) && 0 <= n + 2147483648) && 11 == unknown-#length-unknown["sqrt1-ll.c"]) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && a == 0) && n <= 2147483647) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && 1 <= t) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && t <= 1) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 [2020-11-28 07:44:01,648 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((\old(cond) == cond && \valid[0] == 0) && \valid["sqrt1-ll.c"] == 1) && \valid["0"] == 1) && "sqrt1-ll.c" == 0) && s == 1) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "sqrt1-ll.c") && #NULL == 0) && 0 == "0") && \old(cond) == 1) && 0 <= n + 2147483648) && 11 == unknown-#length-unknown["sqrt1-ll.c"]) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && a * 2 + 1 == t) && a == 0) && n <= 2147483647) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 [2020-11-28 07:44:01,648 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((((((\old(cond) == cond && \valid[0] == 0) && \valid["sqrt1-ll.c"] == 1) && \valid["0"] == 1) && "sqrt1-ll.c" == 0) && s == 1) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "sqrt1-ll.c") && #NULL == 0) && 0 == "0") && \old(cond) == 1) && 0 <= n + 2147483648) && 11 == unknown-#length-unknown["sqrt1-ll.c"]) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && a * 2 + 1 == t) && a == 0) && n <= 2147483647) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 [2020-11-28 07:44:01,669 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4e43c95d-8608-442f-b8a4-6390336bd7bc/bin/utaipan/witness.graphml [2020-11-28 07:44:01,670 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:44:01,671 INFO L168 Benchmark]: Toolchain (without parser) took 11543.80 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 67.6 MB in the beginning and 62.7 MB in the end (delta: 4.9 MB). Peak memory consumption was 51.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:01,671 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory is still 84.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:01,672 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.16 ms. Allocated memory is still 104.9 MB. Free memory was 67.4 MB in the beginning and 80.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:01,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.33 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 78.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:01,673 INFO L168 Benchmark]: Boogie Preprocessor took 22.98 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 77.9 MB in the end (delta: 986.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:01,673 INFO L168 Benchmark]: RCFGBuilder took 546.33 ms. Allocated memory is still 104.9 MB. Free memory was 77.7 MB in the beginning and 61.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:01,674 INFO L168 Benchmark]: TraceAbstraction took 10614.98 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 61.1 MB in the beginning and 65.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:01,674 INFO L168 Benchmark]: Witness Printer took 58.79 ms. Allocated memory is still 151.0 MB. Free memory was 65.9 MB in the beginning and 62.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:01,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 104.9 MB. Free memory is still 84.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.16 ms. Allocated memory is still 104.9 MB. Free memory was 67.4 MB in the beginning and 80.5 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.33 ms. Allocated memory is still 104.9 MB. Free memory was 80.5 MB in the beginning and 78.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.98 ms. Allocated memory is still 104.9 MB. Free memory was 78.9 MB in the beginning and 77.9 MB in the end (delta: 986.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 546.33 ms. Allocated memory is still 104.9 MB. Free memory was 77.7 MB in the beginning and 61.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10614.98 ms. Allocated memory was 104.9 MB in the beginning and 151.0 MB in the end (delta: 46.1 MB). Free memory was 61.1 MB in the beginning and 65.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.1 GB. * Witness Printer took 58.79 ms. Allocated memory is still 151.0 MB. Free memory was 65.9 MB in the beginning and 62.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant [2020-11-28 07:44:01,687 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,687 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,687 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,688 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,688 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,688 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier Derived loop invariant: (((((((((((((((((((((1 <= \old(cond) && 4 <= s) && \old(cond) <= 1) && #NULL == 0) && 1 <= cond) && a * 2 + 1 == t) && n <= 2147483647) && counter <= 2) && 2 <= counter) && 0 <= "0") && 1 <= n) && 0 <= "reach_error") && 0 <= "sqrt1-ll.c") && "sqrt1-ll.c" == 0) && cond <= 1) && s <= 4) && #NULL == 0) && 3 <= t) && a <= 1) && "reach_error" == 0) && 0 == "0") && 0 <= unknown-#StackHeapBarrier-unknown) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant [2020-11-28 07:44:01,689 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,690 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,691 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,692 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,693 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,694 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((((((((((((((((((((((((\old(cond) == cond && \valid[0] == 0) && \valid["sqrt1-ll.c"] == 1) && \valid["0"] == 1) && "sqrt1-ll.c" == 0) && s == 1) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "sqrt1-ll.c") && #NULL == 0) && 0 == "0") && \old(cond) == 1) && 0 <= n + 2147483648) && 11 == unknown-#length-unknown["sqrt1-ll.c"]) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && a == 0) && n <= 2147483647) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && 1 <= t) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && t <= 1) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 - InvariantResult [Line: 30]: Loop Invariant [2020-11-28 07:44:01,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,695 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,696 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,696 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,696 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,696 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,696 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,697 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,697 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,698 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: ((("sqrt1-ll.c" == 0 && ((((((((((((((((((((1 <= \old(cond) && 4 <= s) && counter <= 1) && \old(cond) <= 1) && #NULL <= 0) && 1 <= cond) && 1 <= a) && n <= 2147483647) && 0 <= "0") && t <= 3) && 1 <= n) && 1 <= counter) && 0 <= "reach_error") && 0 <= "sqrt1-ll.c") && cond <= 1) && s <= 4) && 0 <= #NULL) && 3 <= t) && a <= 1) && 0 <= unknown-#StackHeapBarrier-unknown) || (((((((((((((((0 <= n + 2147483648 && #NULL <= 0) && counter <= 0) && s <= 1) && n <= 2147483647) && 0 <= "0") && a <= 0) && 1 <= t) && 0 <= "reach_error") && 0 <= "sqrt1-ll.c") && 0 <= a) && 0 <= #NULL) && t <= 1) && 0 <= counter) && 1 <= s) && 0 <= unknown-#StackHeapBarrier-unknown))) && #NULL == 0) && "reach_error" == 0) && 0 == "0" - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant [2020-11-28 07:44:01,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,700 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,701 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,702 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,703 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,704 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,704 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,704 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,704 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,704 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((((((((((((((((((((\old(cond) == cond && \valid[0] == 0) && \valid["sqrt1-ll.c"] == 1) && \valid["0"] == 1) && "sqrt1-ll.c" == 0) && s == 1) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "sqrt1-ll.c") && #NULL == 0) && 0 == "0") && \old(cond) == 1) && 0 <= n + 2147483648) && 11 == unknown-#length-unknown["sqrt1-ll.c"]) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && a * 2 + 1 == t) && a == 0) && n <= 2147483647) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (t * 2 + t * t + 1 == s * 4 && !(0 == cond)) && a * 2 + 1 == t - InvariantResult [Line: 11]: Loop Invariant [2020-11-28 07:44:01,706 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,706 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,706 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,706 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,707 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,707 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,707 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,712 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,713 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:44:01,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:44:01,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:44:01,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,714 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:44:01,715 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((((((((((((((((((((\old(cond) == cond && \valid[0] == 0) && \valid["sqrt1-ll.c"] == 1) && \valid["0"] == 1) && "sqrt1-ll.c" == 0) && s == 1) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "sqrt1-ll.c") && #NULL == 0) && 0 == "0") && \old(cond) == 1) && 0 <= n + 2147483648) && 11 == unknown-#length-unknown["sqrt1-ll.c"]) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && a * 2 + 1 == t) && a == 0) && n <= 2147483647) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && counter == 1) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 88 SDslu, 73 SDs, 0 SdLazy, 230 SolverSat, 37 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 81 SyntacticMatches, 17 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 26 NumberOfFragments, 563 HoareAnnotationTreeSize, 7 FomulaSimplifications, 1766 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 768 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 6511 SizeOfPredicates, 14 NumberOfNonLiveVariables, 291 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 8/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 1041, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 28, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 45, TOOLS_POST_TIME[ms]: 429, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 42, TOOLS_QUANTIFIERELIM_TIME[ms]: 408, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 204, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 75, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME[ms]: 457, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 6, DOMAIN_ISBOTTOM_APPLICATIONS: 28, DOMAIN_ISBOTTOM_TIME[ms]: 87, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 59, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 59, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 2, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 19, DAG_COMPRESSION_PROCESSED_NODES: 373, DAG_COMPRESSION_RETAINED_NODES: 85, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...