./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.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_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI --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 a3e843bfc822d054ad9b10c58d6f83fcd4aca808 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:24,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:24,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:24,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:24,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:24,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:24,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:24,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:24,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:24,154 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:24,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:24,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:24,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:24,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:24,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:24,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:24,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:24,167 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:24,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:24,180 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:24,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:24,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:24,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:24,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:24,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:24,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:24,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:24,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:24,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:24,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:24,200 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:24,201 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:24,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:24,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:24,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:24,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:24,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:24,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:24,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:24,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:24,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:24,214 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:24,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:24,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:24,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:24,264 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:24,265 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:24,265 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:24,265 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:24,266 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:24,266 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:24,266 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:24,274 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:24,275 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:24,275 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:24,276 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:24,276 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:24,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:24,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:24,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:24,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:24,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:24,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:24,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:24,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:24,279 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:24,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:24,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:24,280 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:24,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:24,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:24,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:24,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:24,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:24,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:24,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:24,282 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:24,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:24,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:24,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:24,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:24,283 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3e843bfc822d054ad9b10c58d6f83fcd4aca808 [2021-10-11 02:29:24,562 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:24,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:24,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:24,610 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:24,611 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:24,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-10-11 02:29:24,705 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/data/efa28a6d3/c2bfec09ac9a469588a174286c427a62/FLAGa49df9212 [2021-10-11 02:29:25,294 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:25,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-10-11 02:29:25,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/data/efa28a6d3/c2bfec09ac9a469588a174286c427a62/FLAGa49df9212 [2021-10-11 02:29:25,651 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/data/efa28a6d3/c2bfec09ac9a469588a174286c427a62 [2021-10-11 02:29:25,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:25,656 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:25,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:25,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:25,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:25,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5398c773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25, skipping insertion in model container [2021-10-11 02:29:25,669 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:25,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:25,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:25,918 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] [2021-10-11 02:29:25,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:25,948 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:25,961 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] [2021-10-11 02:29:25,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:25,983 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:25,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25 WrapperNode [2021-10-11 02:29:25,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:25,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:25,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:25,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:25,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,001 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:26,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:26,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:26,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:26,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... [2021-10-11 02:29:26,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:26,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:26,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:26,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:26,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:26,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:26,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:26,595 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:26,595 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-11 02:29:26,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:26 BoogieIcfgContainer [2021-10-11 02:29:26,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:26,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:26,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:26,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:26,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:25" (1/3) ... [2021-10-11 02:29:26,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbc1454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:26, skipping insertion in model container [2021-10-11 02:29:26,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:25" (2/3) ... [2021-10-11 02:29:26,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbc1454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:26, skipping insertion in model container [2021-10-11 02:29:26,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:26" (3/3) ... [2021-10-11 02:29:26,625 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound1.c [2021-10-11 02:29:26,655 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:26,659 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-10-11 02:29:26,688 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-11 02:29:26,724 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:26,727 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:26,728 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:26,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:26,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:26,728 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:26,729 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:26,729 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-10-11 02:29:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:29:26,757 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:26,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:29:26,759 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]=== [2021-10-11 02:29:26,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:26,768 INFO L82 PathProgramCache]: Analyzing trace with hash 152967942, now seen corresponding path program 1 times [2021-10-11 02:29:26,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:26,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744931539] [2021-10-11 02:29:26,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:26,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:26,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744931539] [2021-10-11 02:29:27,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:27,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:29:27,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969825648] [2021-10-11 02:29:27,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:29:27,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:27,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:29:27,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:29:27,031 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2021-10-11 02:29:27,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:27,071 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2021-10-11 02:29:27,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:29:27,073 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 02:29:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:27,084 INFO L225 Difference]: With dead ends: 71 [2021-10-11 02:29:27,086 INFO L226 Difference]: Without dead ends: 34 [2021-10-11 02:29:27,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:29:27,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-11 02:29:27,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-11 02:29:27,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-10-11 02:29:27,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2021-10-11 02:29:27,148 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 5 [2021-10-11 02:29:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:27,149 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2021-10-11 02:29:27,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:29:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2021-10-11 02:29:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:29:27,150 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:27,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:29:27,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:29:27,152 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]=== [2021-10-11 02:29:27,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:27,156 INFO L82 PathProgramCache]: Analyzing trace with hash 150046441, now seen corresponding path program 1 times [2021-10-11 02:29:27,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:27,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289969171] [2021-10-11 02:29:27,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:27,212 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:27,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749564776] [2021-10-11 02:29:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:27,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-11 02:29:27,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:27,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:27,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:27,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289969171] [2021-10-11 02:29:27,463 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:27,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749564776] [2021-10-11 02:29:27,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:27,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:29:27,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48723424] [2021-10-11 02:29:27,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:29:27,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:27,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:29:27,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:27,479 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2021-10-11 02:29:27,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:27,636 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2021-10-11 02:29:27,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:29:27,637 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2021-10-11 02:29:27,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:27,638 INFO L225 Difference]: With dead ends: 53 [2021-10-11 02:29:27,638 INFO L226 Difference]: Without dead ends: 47 [2021-10-11 02:29:27,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:29:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-11 02:29:27,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28. [2021-10-11 02:29:27,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:29:27,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-10-11 02:29:27,647 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 5 [2021-10-11 02:29:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:27,647 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-10-11 02:29:27,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:29:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-10-11 02:29:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:29:27,648 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:27,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:29:27,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:29:27,877 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]=== [2021-10-11 02:29:27,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:27,877 INFO L82 PathProgramCache]: Analyzing trace with hash 356501228, now seen corresponding path program 1 times [2021-10-11 02:29:27,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:27,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213250198] [2021-10-11 02:29:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:27,890 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:27,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2029125930] [2021-10-11 02:29:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:27,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:29:27,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:27,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:27,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213250198] [2021-10-11 02:29:27,987 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:27,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029125930] [2021-10-11 02:29:27,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:27,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-11 02:29:27,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480899772] [2021-10-11 02:29:27,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:29:27,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:27,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:29:27,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:27,990 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 4 states. [2021-10-11 02:29:28,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:28,009 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-11 02:29:28,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:29:28,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2021-10-11 02:29:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:28,010 INFO L225 Difference]: With dead ends: 34 [2021-10-11 02:29:28,010 INFO L226 Difference]: Without dead ends: 30 [2021-10-11 02:29:28,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:29:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-11 02:29:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-11 02:29:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-10-11 02:29:28,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-10-11 02:29:28,017 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 6 [2021-10-11 02:29:28,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:28,018 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-10-11 02:29:28,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:29:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-10-11 02:29:28,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:29:28,018 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:28,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:28,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:28,245 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]=== [2021-10-11 02:29:28,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:28,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1834102484, now seen corresponding path program 1 times [2021-10-11 02:29:28,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:28,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159237806] [2021-10-11 02:29:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:28,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:28,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [194858196] [2021-10-11 02:29:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:28,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-11 02:29:28,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:28,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:28,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159237806] [2021-10-11 02:29:28,384 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:28,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194858196] [2021-10-11 02:29:28,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:28,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:29:28,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115230851] [2021-10-11 02:29:28,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:29:28,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:28,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:29:28,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:28,387 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2021-10-11 02:29:28,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:28,512 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2021-10-11 02:29:28,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:29:28,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2021-10-11 02:29:28,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:28,514 INFO L225 Difference]: With dead ends: 61 [2021-10-11 02:29:28,514 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:29:28,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:29:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:29:28,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2021-10-11 02:29:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-10-11 02:29:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2021-10-11 02:29:28,525 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 7 [2021-10-11 02:29:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:28,525 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2021-10-11 02:29:28,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:29:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2021-10-11 02:29:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:29:28,526 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:28,526 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:28,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:28,744 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]=== [2021-10-11 02:29:28,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:28,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1966454167, now seen corresponding path program 1 times [2021-10-11 02:29:28,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:28,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375182869] [2021-10-11 02:29:28,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:28,763 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:28,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681916905] [2021-10-11 02:29:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:28,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-11 02:29:28,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:28,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:28,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:29,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:29:29,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375182869] [2021-10-11 02:29:29,017 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:29,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681916905] [2021-10-11 02:29:29,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:29:29,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2021-10-11 02:29:29,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876165525] [2021-10-11 02:29:29,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:29,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:29,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:29,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:29:29,024 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 5 states. [2021-10-11 02:29:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:33,273 INFO L93 Difference]: Finished difference Result 94 states and 109 transitions. [2021-10-11 02:29:33,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:29:33,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:29:33,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:33,276 INFO L225 Difference]: With dead ends: 94 [2021-10-11 02:29:33,277 INFO L226 Difference]: Without dead ends: 86 [2021-10-11 02:29:33,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-11 02:29:33,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-11 02:29:33,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 53. [2021-10-11 02:29:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-10-11 02:29:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2021-10-11 02:29:33,290 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 15 [2021-10-11 02:29:33,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:33,290 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2021-10-11 02:29:33,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2021-10-11 02:29:33,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:29:33,291 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:33,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:33,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:33,505 INFO L429 AbstractCegarLoop]: === Iteration 6 === [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]=== [2021-10-11 02:29:33,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:33,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1763500994, now seen corresponding path program 1 times [2021-10-11 02:29:33,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:33,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943007672] [2021-10-11 02:29:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:33,517 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:33,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260910926] [2021-10-11 02:29:33,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:29:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:33,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:29:33,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:33,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:33,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:33,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943007672] [2021-10-11 02:29:33,617 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:33,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260910926] [2021-10-11 02:29:33,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:33,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-11 02:29:33,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140769772] [2021-10-11 02:29:33,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:29:33,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:33,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:29:33,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:29:33,619 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 5 states. [2021-10-11 02:29:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:33,651 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2021-10-11 02:29:33,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:29:33,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-10-11 02:29:33,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:33,652 INFO L225 Difference]: With dead ends: 63 [2021-10-11 02:29:33,652 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:29:33,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:33,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:29:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:29:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:29:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:29:33,655 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-10-11 02:29:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:33,655 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:29:33,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:29:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:29:33,655 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:29:33,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 02:29:33,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:29:34,190 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2021-10-11 02:29:34,242 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-11 02:29:34,242 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-11 02:29:34,242 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:29:34,242 INFO L262 CegarLoopResult]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2021-10-11 02:29:34,243 INFO L258 CegarLoopResult]: At program point L37-3(lines 37 61) the Hoare annotation is: (and (let ((.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (let ((.cse0 (or (and (<= 1 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~a~0 0) (<= ULTIMATE.start_main_~y~0 2147483647) (= ULTIMATE.start_main_~b~0 0)) (and .cse1 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)))))) (or (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse0 .cse1) (and .cse0 (<= ~counter~0 0) (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0))))) (<= 0 ~counter~0)) [2021-10-11 02:29:34,243 INFO L262 CegarLoopResult]: For program point L37-4(lines 37 61) no Hoare annotation was computed. [2021-10-11 02:29:34,243 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-11 02:29:34,243 INFO L262 CegarLoopResult]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2021-10-11 02:29:34,243 INFO L258 CegarLoopResult]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (and (<= 1 ~counter~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ ULTIMATE.start_main_~r~0 .cse0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)) (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~x~0)) (= ULTIMATE.start_main_~b~0 .cse0))) [2021-10-11 02:29:34,243 INFO L262 CegarLoopResult]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2021-10-11 02:29:34,244 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-11 02:29:34,244 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-11 02:29:34,244 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-10-11 02:29:34,244 INFO L258 CegarLoopResult]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 1 ~counter~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) [2021-10-11 02:29:34,244 INFO L262 CegarLoopResult]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-10-11 02:29:34,244 INFO L258 CegarLoopResult]: At program point L15-5(lines 41 42) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (<= 1 ~counter~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) [2021-10-11 02:29:34,244 INFO L262 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-10-11 02:29:34,244 INFO L258 CegarLoopResult]: At program point L15-8(lines 14 20) the Hoare annotation is: false [2021-10-11 02:29:34,244 INFO L262 CegarLoopResult]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-10-11 02:29:34,245 INFO L258 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: false [2021-10-11 02:29:34,245 INFO L262 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-10-11 02:29:34,245 INFO L258 CegarLoopResult]: At program point L15-14(lines 51 52) the Hoare annotation is: false [2021-10-11 02:29:34,245 INFO L262 CegarLoopResult]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-10-11 02:29:34,245 INFO L258 CegarLoopResult]: At program point L15-17(lines 14 20) the Hoare annotation is: false [2021-10-11 02:29:34,245 INFO L262 CegarLoopResult]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-10-11 02:29:34,245 INFO L265 CegarLoopResult]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-10-11 02:29:34,245 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-11 02:29:34,245 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-10-11 02:29:34,245 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-10-11 02:29:34,246 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-10-11 02:29:34,246 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-10-11 02:29:34,246 INFO L262 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-10-11 02:29:34,246 INFO L262 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-10-11 02:29:34,246 INFO L262 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-10-11 02:29:34,246 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:29:34,246 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-10-11 02:29:34,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:34 BoogieIcfgContainer [2021-10-11 02:29:34,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:34,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:34,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:34,266 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:34,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:26" (3/4) ... [2021-10-11 02:29:34,270 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:29:34,280 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-11 02:29:34,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:29:34,281 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:29:34,282 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:29:34,346 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c4fc43a-d76b-4d1c-a7a9-7b595633ab82/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:34,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:34,347 INFO L168 Benchmark]: Toolchain (without parser) took 8691.14 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 85.6 MB in the beginning and 119.2 MB in the end (delta: -33.6 MB). Peak memory consumption was 71.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,348 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:34,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.51 ms. Allocated memory is still 117.4 MB. Free memory was 85.3 MB in the beginning and 93.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,349 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.46 ms. Allocated memory is still 117.4 MB. Free memory was 93.9 MB in the beginning and 92.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,349 INFO L168 Benchmark]: Boogie Preprocessor took 24.79 ms. Allocated memory is still 117.4 MB. Free memory was 92.4 MB in the beginning and 91.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,350 INFO L168 Benchmark]: RCFGBuilder took 548.17 ms. Allocated memory is still 117.4 MB. Free memory was 91.2 MB in the beginning and 69.8 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,350 INFO L168 Benchmark]: TraceAbstraction took 7665.76 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 69.3 MB in the beginning and 42.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,351 INFO L168 Benchmark]: Witness Printer took 80.60 ms. Allocated memory is still 142.6 MB. Free memory was 42.4 MB in the beginning and 119.2 MB in the end (delta: -76.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:34,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 36.9 MB in the beginning and 36.9 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 324.51 ms. Allocated memory is still 117.4 MB. Free memory was 85.3 MB in the beginning and 93.9 MB in the end (delta: -8.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.46 ms. Allocated memory is still 117.4 MB. Free memory was 93.9 MB in the beginning and 92.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.79 ms. Allocated memory is still 117.4 MB. Free memory was 92.4 MB in the beginning and 91.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 548.17 ms. Allocated memory is still 117.4 MB. Free memory was 91.2 MB in the beginning and 69.8 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7665.76 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 69.3 MB in the beginning and 42.4 MB in the end (delta: 26.9 MB). Peak memory consumption was 53.5 MB. Max. memory is 16.1 GB. * Witness Printer took 80.60 ms. Allocated memory is still 142.6 MB. Free memory was 42.4 MB in the beginning and 119.2 MB in the end (delta: -76.8 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: 41]: Loop Invariant Derived loop invariant: ((x == r + q * y && 1 <= counter) && !(0 == cond)) && b == a * y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((1 <= counter && !(0 == cond)) && r + a * y + q * y == b + x) && b == a * y - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((x == r + q * y && ((((1 <= y && a == 0) && y <= 2147483647) && b == 0) || (!(0 == cond) && b == a * y))) && !(0 == cond)) || (((((((1 <= y && a == 0) && y <= 2147483647) && b == 0) || (!(0 == cond) && b == a * y)) && counter <= 0) && r == x) && q == 0)) && 0 <= counter - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((x == r + q * y && 1 <= counter) && 1 == cond) && b == a * y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.1s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 133 SDtfs, 160 SDslu, 185 SDs, 0 SdLazy, 182 SolverSat, 98 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 15 NumberOfFragments, 144 HoareAnnotationTreeSize, 9 FomulaSimplifications, 265 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 283 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 5188 SizeOfPredicates, 23 NumberOfNonLiveVariables, 374 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...