./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/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 0319027e70a0d2daf010f688863825be9b20c732 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 20:36:03,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:36:03,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:36:03,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:36:03,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:36:03,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:36:03,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:36:03,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:36:03,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:36:03,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:36:03,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:36:03,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:36:03,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:36:03,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:36:03,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:36:03,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:36:03,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:36:03,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:36:03,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:36:03,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:36:03,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:36:03,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:36:03,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:36:03,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:36:03,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:36:03,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:36:03,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:36:03,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:36:03,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:36:03,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:36:03,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:36:03,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:36:03,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:36:03,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:36:03,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:36:03,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:36:03,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:36:03,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:36:03,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:36:03,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:36:03,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:36:03,127 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:36:03,150 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:36:03,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:36:03,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:36:03,151 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:36:03,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:36:03,151 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:36:03,151 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:36:03,152 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:36:03,152 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:36:03,152 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:36:03,152 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:36:03,152 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:36:03,152 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:36:03,153 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:36:03,153 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:36:03,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:36:03,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:36:03,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:36:03,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:36:03,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:36:03,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:36:03,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:36:03,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:36:03,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:36:03,154 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:36:03,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:36:03,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:36:03,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:36:03,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:36:03,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:36:03,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:36:03,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:36:03,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:36:03,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:36:03,156 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:36:03,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:36:03,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:36:03,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:36:03,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:36:03,157 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_9b5f0e58-f021-426e-94cc-15d7aa2af23c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0319027e70a0d2daf010f688863825be9b20c732 [2020-12-09 20:36:03,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:36:03,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:36:03,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:36:03,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:36:03,368 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:36:03,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2020-12-09 20:36:03,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/data/651799d8c/b67d7a87c2ee422380bc31a8bb9b9464/FLAG508b60e49 [2020-12-09 20:36:03,769 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:36:03,769 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c [2020-12-09 20:36:03,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/data/651799d8c/b67d7a87c2ee422380bc31a8bb9b9464/FLAG508b60e49 [2020-12-09 20:36:03,783 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/data/651799d8c/b67d7a87c2ee422380bc31a8bb9b9464 [2020-12-09 20:36:03,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:36:03,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:36:03,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:36:03,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:36:03,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:36:03,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:03,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e21a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03, skipping insertion in model container [2020-12-09 20:36:03,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:03,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:36:03,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:36:03,913 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2020-12-09 20:36:03,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:36:03,932 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:36:03,941 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound1.c[576,589] [2020-12-09 20:36:03,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:36:03,961 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:36:03,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03 WrapperNode [2020-12-09 20:36:03,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:36:03,963 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:36:03,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:36:03,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:36:03,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:03,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:03,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:36:03,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:36:03,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:36:03,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:36:03,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:03,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:04,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:04,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:04,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:04,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:04,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... [2020-12-09 20:36:04,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:36:04,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:36:04,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:36:04,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:36:04,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/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 [2020-12-09 20:36:04,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:36:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:36:04,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:36:04,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:36:04,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:36:04,342 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-09 20:36:04,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:36:04 BoogieIcfgContainer [2020-12-09 20:36:04,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:36:04,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:36:04,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:36:04,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:36:04,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:36:03" (1/3) ... [2020-12-09 20:36:04,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbacc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:36:04, skipping insertion in model container [2020-12-09 20:36:04,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:36:03" (2/3) ... [2020-12-09 20:36:04,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fbacc0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:36:04, skipping insertion in model container [2020-12-09 20:36:04,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:36:04" (3/3) ... [2020-12-09 20:36:04,350 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound1.c [2020-12-09 20:36:04,360 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:36:04,363 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-09 20:36:04,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-09 20:36:04,388 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:36:04,388 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:36:04,389 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:36:04,389 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:36:04,389 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:36:04,389 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:36:04,389 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:36:04,389 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:36:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-12-09 20:36:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 20:36:04,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:04,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 20:36:04,404 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:04,408 INFO L82 PathProgramCache]: Analyzing trace with hash 5424045, now seen corresponding path program 1 times [2020-12-09 20:36:04,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:04,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29146589] [2020-12-09 20:36:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:04,492 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 20:36:04,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031989996] [2020-12-09 20:36:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/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 [2020-12-09 20:36:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:04,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 20:36:04,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:36:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:04,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:36:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:04,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29146589] [2020-12-09 20:36:04,635 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:36:04,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031989996] [2020-12-09 20:36:04,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:36:04,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 20:36:04,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100213712] [2020-12-09 20:36:04,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:36:04,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:04,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:36:04,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:36:04,650 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2020-12-09 20:36:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:04,759 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2020-12-09 20:36:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 20:36:04,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-12-09 20:36:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:04,766 INFO L225 Difference]: With dead ends: 75 [2020-12-09 20:36:04,766 INFO L226 Difference]: Without dead ends: 38 [2020-12-09 20:36:04,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-09 20:36:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-09 20:36:04,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2020-12-09 20:36:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-09 20:36:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-12-09 20:36:04,793 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 4 [2020-12-09 20:36:04,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:04,793 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-12-09 20:36:04,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:36:04,793 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-12-09 20:36:04,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 20:36:04,793 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:04,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 20:36:04,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 20:36:04,995 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:04,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:04,996 INFO L82 PathProgramCache]: Analyzing trace with hash 917696144, now seen corresponding path program 1 times [2020-12-09 20:36:04,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:04,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239907532] [2020-12-09 20:36:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:05,012 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 20:36:05,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235015293] [2020-12-09 20:36:05,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/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 [2020-12-09 20:36:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:05,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 20:36:05,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:36:05,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:05,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:36:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:05,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239907532] [2020-12-09 20:36:05,125 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:36:05,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235015293] [2020-12-09 20:36:05,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:36:05,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 20:36:05,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182423659] [2020-12-09 20:36:05,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 20:36:05,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:05,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 20:36:05,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 20:36:05,129 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states. [2020-12-09 20:36:05,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:05,217 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-12-09 20:36:05,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 20:36:05,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-09 20:36:05,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:05,219 INFO L225 Difference]: With dead ends: 52 [2020-12-09 20:36:05,219 INFO L226 Difference]: Without dead ends: 44 [2020-12-09 20:36:05,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 20:36:05,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-09 20:36:05,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-12-09 20:36:05,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 20:36:05,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2020-12-09 20:36:05,230 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2020-12-09 20:36:05,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:05,231 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2020-12-09 20:36:05,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 20:36:05,231 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2020-12-09 20:36:05,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 20:36:05,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:05,232 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:05,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:05,434 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:05,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:05,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1413549718, now seen corresponding path program 1 times [2020-12-09 20:36:05,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:05,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830916573] [2020-12-09 20:36:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:05,494 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 20:36:05,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [52805939] [2020-12-09 20:36:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/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 [2020-12-09 20:36:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:05,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 20:36:05,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:36:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:05,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:36:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:05,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830916573] [2020-12-09 20:36:05,621 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:36:05,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52805939] [2020-12-09 20:36:05,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:36:05,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-09 20:36:05,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074862492] [2020-12-09 20:36:05,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 20:36:05,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:05,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 20:36:05,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-09 20:36:05,623 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 5 states. [2020-12-09 20:36:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:05,689 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-12-09 20:36:05,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 20:36:05,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-09 20:36:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:05,690 INFO L225 Difference]: With dead ends: 44 [2020-12-09 20:36:05,690 INFO L226 Difference]: Without dead ends: 42 [2020-12-09 20:36:05,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-09 20:36:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-12-09 20:36:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-12-09 20:36:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 20:36:05,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-09 20:36:05,697 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 13 [2020-12-09 20:36:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:05,697 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-09 20:36:05,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 20:36:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-09 20:36:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 20:36:05,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:05,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:05,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:05,900 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:05,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:05,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1898150023, now seen corresponding path program 1 times [2020-12-09 20:36:05,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:05,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307867580] [2020-12-09 20:36:05,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:05,938 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 20:36:05,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606810614] [2020-12-09 20:36:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/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 [2020-12-09 20:36:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:06,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-09 20:36:06,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:36:06,118 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 20:36:06,126 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 20:36:06,129 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 20:36:06,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 20:36:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:06,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:36:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:06,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307867580] [2020-12-09 20:36:06,268 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:36:06,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606810614] [2020-12-09 20:36:06,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2095588893] [2020-12-09 20:36:06,284 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2020-12-09 20:36:06,284 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 20:36:06,288 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 20:36:06,292 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 20:36:06,293 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 20:36:06,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 20:36:06,753 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 20:36:06,995 WARN L197 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2020-12-09 20:36:07,272 WARN L197 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-12-09 20:36:07,549 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-12-09 20:36:07,896 WARN L197 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-12-09 20:36:08,240 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-12-09 20:36:08,449 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-12-09 20:36:08,690 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-12-09 20:36:08,826 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:36:08,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 20:36:08,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 20:36:08,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312116651] [2020-12-09 20:36:08,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 20:36:08,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:08,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 20:36:08,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-12-09 20:36:08,828 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 12 states. [2020-12-09 20:36:29,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:29,727 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2020-12-09 20:36:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-09 20:36:29,728 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-12-09 20:36:29,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:29,729 INFO L225 Difference]: With dead ends: 147 [2020-12-09 20:36:29,729 INFO L226 Difference]: Without dead ends: 110 [2020-12-09 20:36:29,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=470, Invalid=1252, Unknown=0, NotChecked=0, Total=1722 [2020-12-09 20:36:29,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-09 20:36:29,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 69. [2020-12-09 20:36:29,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-12-09 20:36:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-12-09 20:36:29,739 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 19 [2020-12-09 20:36:29,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:29,740 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-12-09 20:36:29,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 20:36:29,740 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-12-09 20:36:29,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 20:36:29,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:36:29,740 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:36:29,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:29,942 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:36:29,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:36:29,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1498907256, now seen corresponding path program 1 times [2020-12-09 20:36:29,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:36:29,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889351775] [2020-12-09 20:36:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:36:29,958 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 20:36:29,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996274877] [2020-12-09 20:36:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 20:36:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:36:30,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 20:36:30,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:36:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:30,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 20:36:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:36:30,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889351775] [2020-12-09 20:36:30,180 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 20:36:30,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996274877] [2020-12-09 20:36:30,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [936139202] [2020-12-09 20:36:30,182 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-12-09 20:36:30,182 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 20:36:30,182 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 20:36:30,182 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 20:36:30,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 20:36:30,209 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 20:36:30,498 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 20:36:30,834 WARN L197 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2020-12-09 20:36:31,146 WARN L197 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-12-09 20:36:31,541 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2020-12-09 20:36:31,947 WARN L197 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2020-12-09 20:36:32,180 WARN L197 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-12-09 20:36:32,486 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2020-12-09 20:36:33,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-12-09 20:36:33,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6] total 17 [2020-12-09 20:36:33,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482158631] [2020-12-09 20:36:33,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 20:36:33,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 20:36:33,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 20:36:33,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-12-09 20:36:33,029 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 8 states. [2020-12-09 20:36:33,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:36:33,112 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-12-09 20:36:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 20:36:33,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-12-09 20:36:33,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:36:33,113 INFO L225 Difference]: With dead ends: 69 [2020-12-09 20:36:33,113 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 20:36:33,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-12-09 20:36:33,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 20:36:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 20:36:33,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 20:36:33,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 20:36:33,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-12-09 20:36:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:36:33,114 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 20:36:33,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 20:36:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 20:36:33,114 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 20:36:33,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-09 20:36:33,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 20:36:33,598 WARN L197 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2020-12-09 20:36:33,755 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-12-09 20:36:34,008 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2020-12-09 20:36:34,303 WARN L197 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2020-12-09 20:36:34,455 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-12-09 20:36:34,457 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 20:36:34,457 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 20:36:34,457 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 20:36:34,457 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 20:36:34,457 INFO L258 CegarLoopResult]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~y~0 1))) (or (and (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~x~0 1) (= |#NULL.base| 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~a~0 0) (<= 0 ULTIMATE.start_main_~r~0) (<= 0 |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 1 ULTIMATE.start_main_~y~0) .cse0 (= |#t~string5.offset| 0) (<= 0 |#t~string6.base|) (<= 0 |#t~string5.base|) (= ULTIMATE.start_main_~q~0 0) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (= 0 |#t~string4.offset|) (= ULTIMATE.start_main_~b~0 0) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= 0 |#StackHeapBarrier|)) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) (= (+ ULTIMATE.start_main_~r~0 .cse1 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (= ULTIMATE.start_main_~b~0 .cse1))))) [2020-12-09 20:36:34,457 INFO L262 CegarLoopResult]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2020-12-09 20:36:34,457 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 20:36:34,457 INFO L258 CegarLoopResult]: At program point L47-2(lines 47 59) the Hoare annotation is: (and (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (= |#NULL.base| 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (<= 0 |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= ULTIMATE.start_main_~r~0 1) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~q~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 |#t~string6.base|) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (= |#NULL.offset| 0) (<= 0 ULTIMATE.start_main_~q~0) (= |#t~string6.offset| 0) (= 0 |#t~string4.offset|) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= 0 |#StackHeapBarrier|)) [2020-12-09 20:36:34,457 INFO L262 CegarLoopResult]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2020-12-09 20:36:34,457 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 20:36:34,457 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-09 20:36:34,458 INFO L258 CegarLoopResult]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse4 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (let ((.cse1 (<= ULTIMATE.start_main_~y~0 1)) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (= (+ ULTIMATE.start_main_~r~0 .cse4 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0))) (.cse0 (= ULTIMATE.start_main_~b~0 .cse4))) (or (and (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= ULTIMATE.start_main_~x~0 1) (= |#NULL.base| 0) .cse0 (<= 0 |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= 1 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= |#t~string5.offset| 0) (<= 0 |#t~string6.base|) (<= 0 |#t~string5.base|) (<= 0 ULTIMATE.start_main_~x~0) .cse3 (= ULTIMATE.start_main_~q~0 0) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (= 0 |#t~string4.offset|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= ULTIMATE.start_main_~b~0 0) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= 0 |#StackHeapBarrier|)) (and .cse1 .cse2 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse3 (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0)))) [2020-12-09 20:36:34,458 INFO L262 CegarLoopResult]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-09 20:36:34,458 INFO L258 CegarLoopResult]: At program point L15-5(lines 42 43) the Hoare annotation is: (let ((.cse4 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (let ((.cse3 (= ULTIMATE.start_main_~b~0 .cse4)) (.cse0 (<= ULTIMATE.start_main_~y~0 1)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (= (+ ULTIMATE.start_main_~r~0 .cse4 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)))) (or (and .cse0 .cse1 (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse2 (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse3) (and (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (= |#NULL.base| 0) (<= 0 ULTIMATE.start_main_~r~0) .cse3 (<= 0 |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= ULTIMATE.start_main_~r~0 1) (<= 1 ULTIMATE.start_main_~y~0) .cse0 .cse1 (<= 0 |#t~string6.base|) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) .cse2 (= ULTIMATE.start_main_~q~0 0) (= |#NULL.offset| 0) (= |#t~string6.offset| 0) (= 0 |#t~string4.offset|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= 0 |#StackHeapBarrier|) (= ULTIMATE.start_main_~b~0 0))))) [2020-12-09 20:36:34,458 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-12-09 20:36:34,458 INFO L258 CegarLoopResult]: At program point L15-8(lines 14 20) the Hoare annotation is: (and (<= ULTIMATE.start_assume_abort_if_not_~cond 1) (= |#NULL.base| 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (<= 0 |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (<= ULTIMATE.start_main_~r~0 1) (<= 1 ULTIMATE.start_main_~y~0) (<= ULTIMATE.start_main_~q~0 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 0 |#t~string6.base|) (<= 0 |#t~string5.base|) (= |#t~string5.offset| 0) (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (= |#NULL.offset| 0) (<= 0 ULTIMATE.start_main_~q~0) (= |#t~string6.offset| 0) (= 0 |#t~string4.offset|) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (<= 1 ULTIMATE.start_assume_abort_if_not_~cond) (<= 0 |#StackHeapBarrier|)) [2020-12-09 20:36:34,458 INFO L262 CegarLoopResult]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2020-12-09 20:36:34,458 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (.cse1 (select |#memory_int| |#t~string4.base|))) (and (<= ULTIMATE.start_main_~x~0 1) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (<= 1 ULTIMATE.start_main_~y~0) (= (select |#valid| |#t~string4.base|) 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= |#t~string5.offset| 0) (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse0) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (= 0 |#t~string4.offset|) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= 2 (select |#length| |#t~string4.base|)) (= |#NULL.base| 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= 14 (select |#length| |#t~string5.base|)) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse1 |#t~string4.offset|)) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse1 (+ |#t~string4.offset| 1)) 0))) [2020-12-09 20:36:34,458 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-12-09 20:36:34,458 INFO L258 CegarLoopResult]: At program point L15-14(lines 52 53) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (.cse1 (select |#memory_int| |#t~string4.base|))) (and (<= ULTIMATE.start_main_~x~0 1) (= (select |#valid| 0) 0) (= (select |#valid| |#t~string5.base|) 1) (<= 1 ULTIMATE.start_main_~y~0) (= (select |#valid| |#t~string4.base|) 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= |#t~string5.offset| 0) (= (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse0) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (= 12 (select |#length| |#t~string6.base|)) (< |#StackHeapBarrier| |#t~string5.base|) (= |#NULL.offset| 0) (= 0 |#t~string4.offset|) (<= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~r~0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond| 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse0)) (= 2 (select |#length| |#t~string4.base|)) (= |#NULL.base| 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= 14 (select |#length| |#t~string5.base|)) (= (select |#valid| |#t~string6.base|) 1) (= 48 (select .cse1 |#t~string4.offset|)) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| 1) (< |#StackHeapBarrier| |#t~string6.base|) (< |#StackHeapBarrier| |#t~string4.base|) (= |ULTIMATE.start_assume_abort_if_not_#in~cond| ULTIMATE.start_assume_abort_if_not_~cond) (< 0 |#StackHeapBarrier|) (= |#t~string6.offset| 0) (= (select .cse1 (+ |#t~string4.offset| 1)) 0))) [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L258 CegarLoopResult]: At program point L15-17(lines 14 20) the Hoare annotation is: false [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L258 CegarLoopResult]: At program point L15-20(lines 14 20) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 20:36:34,459 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-09 20:36:34,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:36:34 BoogieIcfgContainer [2020-12-09 20:36:34,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:36:34,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:36:34,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:36:34,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:36:34,483 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:36:04" (3/4) ... [2020-12-09 20:36:34,485 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 20:36:34,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2020-12-09 20:36:34,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 20:36:34,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 20:36:34,492 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 20:36:34,508 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((cond <= 1 && x <= 1) && #NULL == 0) && r == x) && a == 0) && 0 <= r) && 0 <= "0") && \old(cond) == 1) && 1 <= y) && y <= 1) && "cohendiv-ll.c" == 0) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && q == 0) && #NULL == 0) && "reach_error" == 0) && 0 == "0") && b == 0) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown) || ((((((y <= 1 && 1 == cond) && y <= x) && 2 * r < x) && r + a * y + q * y == b + x) && x <= r + y) && b == a * y) [2020-12-09 20:36:34,508 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((cond <= 1 && x <= 1) && #NULL == 0) && b == a * y) && 0 <= "0") && \old(cond) == 1) && 1 <= y) && y <= 1) && 1 == cond) && "cohendiv-ll.c" == 0) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && 0 <= x) && r + a * y + q * y == b + x) && q == 0) && #NULL == 0) && "reach_error" == 0) && 0 == "0") && \old(cond) == 1) && b == 0) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown) || ((((((y <= 1 && 1 == cond) && y <= x) && 2 * r < x) && r + a * y + q * y == b + x) && x <= r + y) && b == a * y) [2020-12-09 20:36:34,508 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y <= 1 && 1 == cond) && y <= x) && 2 * r < x) && r + a * y + q * y == b + x) && x <= r + y) && b == a * y) || (((((((((((((((((((((cond <= 1 && #NULL == 0) && 0 <= r) && b == a * y) && 0 <= "0") && \old(cond) == 1) && r <= 1) && 1 <= y) && y <= 1) && 1 == cond) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && r + a * y + q * y == b + x) && q == 0) && #NULL == 0) && "reach_error" == 0) && 0 == "0") && \old(cond) == 1) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown) && b == 0) [2020-12-09 20:36:34,508 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((cond <= 1 && #NULL == 0) && r == x) && b == y) && b == a * y) && 0 <= "0") && \old(cond) == 1) && r <= 1) && 1 <= y) && q <= 0) && 1 == cond) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && #NULL == 0) && 0 <= q) && "reach_error" == 0) && 0 == "0") && y <= r) && \old(cond) == 1) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown [2020-12-09 20:36:34,508 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((((cond <= 1 && #NULL == 0) && r == x) && b == y) && 0 <= "0") && \old(cond) == 1) && r <= 1) && 1 <= y) && q <= 0) && 1 == cond) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && r + a * y + q * y == b + x) && #NULL == 0) && 0 <= q) && "reach_error" == 0) && 0 == "0") && y <= r) && \old(cond) == 1) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown [2020-12-09 20:36:34,509 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((x <= 1 && \valid[0] == 0) && \valid["cohendiv-ll.c"] == 1) && 1 <= y) && \valid["0"] == 1) && 1 == cond) && "cohendiv-ll.c" == 0) && r + a * y + q * y == b + x) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && #NULL == 0) && 0 == "0") && y <= r) && \old(cond) == 1) && x == r + q * y) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && r == x) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && b == y) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 [2020-12-09 20:36:34,509 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((((((((((((((((((((x <= 1 && \valid[0] == 0) && \valid["cohendiv-ll.c"] == 1) && 1 <= y) && \valid["0"] == 1) && 1 == cond) && "cohendiv-ll.c" == 0) && r + a * y + q * y == b + x) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && #NULL == 0) && 0 == "0") && y <= r) && \old(cond) == 1) && x == r + q * y) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && r == x) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && b == y) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 [2020-12-09 20:36:34,523 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9b5f0e58-f021-426e-94cc-15d7aa2af23c/bin/utaipan/witness.graphml [2020-12-09 20:36:34,523 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:36:34,524 INFO L168 Benchmark]: Toolchain (without parser) took 30737.64 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 78.3 MB in the beginning and 59.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 58.9 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:34,524 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 115.3 MB. Free memory is still 94.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:36:34,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.15 ms. Allocated memory is still 115.3 MB. Free memory was 78.1 MB in the beginning and 91.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:34,525 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.74 ms. Allocated memory is still 115.3 MB. Free memory was 91.4 MB in the beginning and 89.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:34,525 INFO L168 Benchmark]: Boogie Preprocessor took 21.63 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 88.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:36:34,526 INFO L168 Benchmark]: RCFGBuilder took 329.32 ms. Allocated memory is still 115.3 MB. Free memory was 88.6 MB in the beginning and 62.0 MB in the end (delta: 26.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:34,526 INFO L168 Benchmark]: TraceAbstraction took 30137.61 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 61.6 MB in the beginning and 62.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 65.6 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:34,527 INFO L168 Benchmark]: Witness Printer took 40.21 ms. Allocated memory is still 155.2 MB. Free memory was 62.8 MB in the beginning and 59.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 20:36:34,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 115.3 MB. Free memory is still 94.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 175.15 ms. Allocated memory is still 115.3 MB. Free memory was 78.1 MB in the beginning and 91.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.74 ms. Allocated memory is still 115.3 MB. Free memory was 91.4 MB in the beginning and 89.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.63 ms. Allocated memory is still 115.3 MB. Free memory was 89.8 MB in the beginning and 88.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 329.32 ms. Allocated memory is still 115.3 MB. Free memory was 88.6 MB in the beginning and 62.0 MB in the end (delta: 26.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 30137.61 ms. Allocated memory was 115.3 MB in the beginning and 155.2 MB in the end (delta: 39.8 MB). Free memory was 61.6 MB in the beginning and 62.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 65.6 MB. Max. memory is 16.1 GB. * Witness Printer took 40.21 ms. Allocated memory is still 155.2 MB. Free memory was 62.8 MB in the beginning and 59.7 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.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((y <= 1 && 1 == cond) && y <= x) && 2 * r < x) && r + a * y + q * y == b + x) && x <= r + y) && b == a * y) || (((((((((((((((((((((cond <= 1 && #NULL == 0) && 0 <= r) && b == a * y) && 0 <= "0") && \old(cond) == 1) && r <= 1) && 1 <= y) && y <= 1) && 1 == cond) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && r + a * y + q * y == b + x) && q == 0) && #NULL == 0) && "reach_error" == 0) && 0 == "0") && \old(cond) == 1) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown) && b == 0) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: !(0 == cond) && b == a * y - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((x <= 1 && \valid[0] == 0) && \valid["cohendiv-ll.c"] == 1) && 1 <= y) && \valid["0"] == 1) && 1 == cond) && "cohendiv-ll.c" == 0) && r + a * y + q * y == b + x) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && #NULL == 0) && 0 == "0") && y <= r) && \old(cond) == 1) && x == r + q * y) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && r == x) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && b == y) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((((((((((((((cond <= 1 && #NULL == 0) && r == x) && b == y) && 0 <= "0") && \old(cond) == 1) && r <= 1) && 1 <= y) && q <= 0) && 1 == cond) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && r + a * y + q * y == b + x) && #NULL == 0) && 0 <= q) && "reach_error" == 0) && 0 == "0") && y <= r) && \old(cond) == 1) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((cond <= 1 && x <= 1) && #NULL == 0) && b == a * y) && 0 <= "0") && \old(cond) == 1) && 1 <= y) && y <= 1) && 1 == cond) && "cohendiv-ll.c" == 0) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && 0 <= x) && r + a * y + q * y == b + x) && q == 0) && #NULL == 0) && "reach_error" == 0) && 0 == "0") && \old(cond) == 1) && b == 0) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown) || ((((((y <= 1 && 1 == cond) && y <= x) && 2 * r < x) && r + a * y + q * y == b + x) && x <= r + y) && b == a * y) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((((((cond <= 1 && #NULL == 0) && r == x) && b == y) && b == a * y) && 0 <= "0") && \old(cond) == 1) && r <= 1) && 1 <= y) && q <= 0) && 1 == cond) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && "cohendiv-ll.c" == 0) && #NULL == 0) && 0 <= q) && "reach_error" == 0) && 0 == "0") && y <= r) && \old(cond) == 1) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((((((((((((((((((((x <= 1 && \valid[0] == 0) && \valid["cohendiv-ll.c"] == 1) && 1 <= y) && \valid["0"] == 1) && 1 == cond) && "cohendiv-ll.c" == 0) && r + a * y + q * y == b + x) && 12 == unknown-#length-unknown["reach_error"]) && unknown-#StackHeapBarrier-unknown < "cohendiv-ll.c") && #NULL == 0) && 0 == "0") && y <= r) && \old(cond) == 1) && x == r + q * y) && 2 == unknown-#length-unknown["0"]) && #NULL == 0) && r == x) && 14 == unknown-#length-unknown["cohendiv-ll.c"]) && \valid["reach_error"] == 1) && 48 == unknown-#memory_int-unknown["0"]["0"]) && b == y) && \old(cond) == 1) && unknown-#StackHeapBarrier-unknown < "reach_error") && unknown-#StackHeapBarrier-unknown < "0") && \old(cond) == cond) && 0 < unknown-#StackHeapBarrier-unknown) && "reach_error" == 0) && unknown-#memory_int-unknown["0"]["0" + 1] == 0 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((((((((((((cond <= 1 && x <= 1) && #NULL == 0) && r == x) && a == 0) && 0 <= r) && 0 <= "0") && \old(cond) == 1) && 1 <= y) && y <= 1) && "cohendiv-ll.c" == 0) && 0 <= "reach_error") && 0 <= "cohendiv-ll.c") && q == 0) && #NULL == 0) && "reach_error" == 0) && 0 == "0") && b == 0) && 1 <= cond) && 0 <= unknown-#StackHeapBarrier-unknown) || ((((((y <= 1 && 1 == cond) && y <= x) && 2 * r < x) && r + a * y + q * y == b + x) && x <= r + y) && b == a * y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.9s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 21.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 262 SDslu, 144 SDs, 0 SdLazy, 337 SolverSat, 264 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 20.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 229 GetRequests, 129 SyntacticMatches, 25 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 5 MinimizatonAttempts, 59 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 21 NumberOfFragments, 737 HoareAnnotationTreeSize, 9 FomulaSimplifications, 170 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 549 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 32170 SizeOfPredicates, 30 NumberOfNonLiveVariables, 440 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 29/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME[ms]: 317, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 17, DAG_INTERPRETER_EARLY_EXITS: 2, TOOLS_POST_APPLICATIONS: 40, TOOLS_POST_TIME[ms]: 150, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME[ms]: 142, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 70, FLUID_QUERY_TIME[ms]: 1, FLUID_QUERIES: 58, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME[ms]: 112, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 17, DOMAIN_ISBOTTOM_TIME[ms]: 40, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 64, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 64, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 0, PATH_EXPR_TIME[ms]: 1, REGEX_TO_DAG_TIME[ms]: 1, DAG_COMPRESSION_TIME[ms]: 7, DAG_COMPRESSION_PROCESSED_NODES: 411, DAG_COMPRESSION_RETAINED_NODES: 67, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...