./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 070b005151a155625f2a1d89ebf21c03a6d381af2d7b663a2fe06061e79da5f4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:45:45,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:45:45,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:45:45,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:45:45,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:45:45,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:45:45,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:45:45,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:45:45,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:45:45,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:45:45,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:45:45,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:45:45,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:45:45,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:45:45,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:45:45,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:45:45,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:45:45,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:45:45,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:45:45,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:45:45,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:45:45,205 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:45:45,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:45:45,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:45:45,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:45:45,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:45:45,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:45:45,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:45:45,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:45:45,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:45:45,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:45:45,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:45:45,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:45:45,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:45:45,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:45:45,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:45:45,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:45:45,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:45:45,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:45:45,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:45:45,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:45:45,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:45:45,302 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:45:45,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:45:45,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:45:45,305 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:45:45,305 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:45:45,306 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:45:45,306 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:45:45,306 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:45:45,306 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:45:45,307 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:45:45,315 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:45:45,315 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:45:45,316 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:45:45,316 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:45:45,316 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:45:45,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:45:45,318 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:45:45,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:45:45,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:45:45,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:45:45,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:45:45,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:45:45,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:45:45,319 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:45:45,320 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:45:45,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:45:45,320 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:45:45,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:45:45,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:45:45,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:45:45,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:45:45,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:45:45,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:45:45,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:45:45,323 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:45:45,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:45:45,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:45:45,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:45:45,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:45:45,324 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_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 070b005151a155625f2a1d89ebf21c03a6d381af2d7b663a2fe06061e79da5f4 [2021-10-24 10:45:45,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:45:45,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:45:45,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:45:45,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:45:45,683 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:45:45,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2021-10-24 10:45:45,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/data/5f28d495d/1f3c66d7c91f4a53a511d74c53c3331f/FLAG2634dc8cc [2021-10-24 10:45:46,333 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:45:46,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2021-10-24 10:45:46,341 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/data/5f28d495d/1f3c66d7c91f4a53a511d74c53c3331f/FLAG2634dc8cc [2021-10-24 10:45:46,725 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/data/5f28d495d/1f3c66d7c91f4a53a511d74c53c3331f [2021-10-24 10:45:46,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:45:46,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:45:46,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:45:46,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:45:46,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:45:46,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:45:46" (1/1) ... [2021-10-24 10:45:46,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294db0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:46, skipping insertion in model container [2021-10-24 10:45:46,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:45:46" (1/1) ... [2021-10-24 10:45:46,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:45:46,778 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:45:46,954 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533] [2021-10-24 10:45:46,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:45:46,976 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:45:46,991 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c[520,533] [2021-10-24 10:45:46,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:45:47,014 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:45:47,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47 WrapperNode [2021-10-24 10:45:47,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:45:47,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:45:47,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:45:47,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:45:47,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:45:47,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:45:47,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:45:47,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:45:47,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:45:47,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:45:47,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:45:47,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:45:47,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (1/1) ... [2021-10-24 10:45:47,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:45:47,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:45:47,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:45:47,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:45:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:45:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:45:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:45:47,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:45:47,598 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:45:47,599 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-24 10:45:47,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:45:47 BoogieIcfgContainer [2021-10-24 10:45:47,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:45:47,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:45:47,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:45:47,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:45:47,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:45:46" (1/3) ... [2021-10-24 10:45:47,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5beb165b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:45:47, skipping insertion in model container [2021-10-24 10:45:47,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:45:47" (2/3) ... [2021-10-24 10:45:47,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5beb165b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:45:47, skipping insertion in model container [2021-10-24 10:45:47,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:45:47" (3/3) ... [2021-10-24 10:45:47,614 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.c [2021-10-24 10:45:47,620 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:45:47,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 10:45:47,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:45:47,711 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:45:47,712 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 10:45:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:47,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:45:47,747 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:45:47,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:45:47,749 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:45:47,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:45:47,770 INFO L82 PathProgramCache]: Analyzing trace with hash 3950384, now seen corresponding path program 1 times [2021-10-24 10:45:47,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:45:47,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381708041] [2021-10-24 10:45:47,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:45:47,791 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:45:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:45:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:45:48,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:45:48,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381708041] [2021-10-24 10:45:48,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381708041] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 10:45:48,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:45:48,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-24 10:45:48,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895604326] [2021-10-24 10:45:48,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 10:45:48,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:45:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 10:45:48,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 10:45:48,189 INFO L87 Difference]: Start difference. First operand has 28 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:45:48,296 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2021-10-24 10:45:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 10:45:48,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-24 10:45:48,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:45:48,306 INFO L225 Difference]: With dead ends: 78 [2021-10-24 10:45:48,306 INFO L226 Difference]: Without dead ends: 47 [2021-10-24 10:45:48,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:45:48,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-24 10:45:48,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2021-10-24 10:45:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 34 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-10-24 10:45:48,345 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 4 [2021-10-24 10:45:48,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:45:48,346 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-10-24 10:45:48,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-10-24 10:45:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:45:48,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:45:48,347 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:45:48,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:45:48,348 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:45:48,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:45:48,349 INFO L82 PathProgramCache]: Analyzing trace with hash -498492525, now seen corresponding path program 1 times [2021-10-24 10:45:48,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:45:48,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708211035] [2021-10-24 10:45:48,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:45:48,350 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:45:48,365 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:45:48,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897654678] [2021-10-24 10:45:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:45:48,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:45:48,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:45:48,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:45:48,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:45:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:45:48,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:45:48,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:45:48,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:45:48,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:45:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:45:48,648 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:45:48,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708211035] [2021-10-24 10:45:48,648 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:45:48,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897654678] [2021-10-24 10:45:48,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897654678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:45:48,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:45:48,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:45:48,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339708171] [2021-10-24 10:45:48,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:45:48,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:45:48,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:45:48,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:45:48,653 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:45:48,827 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-10-24 10:45:48,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:45:48,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:45:48,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:45:48,831 INFO L225 Difference]: With dead ends: 47 [2021-10-24 10:45:48,832 INFO L226 Difference]: Without dead ends: 43 [2021-10-24 10:45:48,834 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.9ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:45:48,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-24 10:45:48,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2021-10-24 10:45:48,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:48,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-24 10:45:48,852 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2021-10-24 10:45:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:45:48,853 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-24 10:45:48,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-24 10:45:48,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:45:48,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:45:48,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:45:48,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:45:49,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-24 10:45:49,083 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:45:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:45:49,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1985176726, now seen corresponding path program 1 times [2021-10-24 10:45:49,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:45:49,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53124106] [2021-10-24 10:45:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:45:49,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:45:49,100 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:45:49,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772989993] [2021-10-24 10:45:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:45:49,101 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:45:49,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:45:49,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:45:49,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:45:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:45:49,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:45:49,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:45:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:45:49,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:45:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:45:49,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:45:49,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53124106] [2021-10-24 10:45:49,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:45:49,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772989993] [2021-10-24 10:45:49,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772989993] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:45:49,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:45:49,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:45:49,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896154279] [2021-10-24 10:45:49,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:45:49,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:45:49,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:45:49,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:45:49,372 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:49,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:45:49,668 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-24 10:45:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:45:49,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:45:49,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:45:49,670 INFO L225 Difference]: With dead ends: 39 [2021-10-24 10:45:49,670 INFO L226 Difference]: Without dead ends: 27 [2021-10-24 10:45:49,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:45:49,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-24 10:45:49,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-24 10:45:49,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.173913043478261) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-24 10:45:49,677 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 8 [2021-10-24 10:45:49,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:45:49,677 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-24 10:45:49,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:49,677 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-24 10:45:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 10:45:49,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:45:49,678 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:45:49,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:45:49,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:45:49,887 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:45:49,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:45:49,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1294888167, now seen corresponding path program 1 times [2021-10-24 10:45:49,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:45:49,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925469566] [2021-10-24 10:45:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:45:49,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:45:49,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:45:49,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1080950644] [2021-10-24 10:45:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:45:49,904 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:45:49,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:45:49,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:45:49,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:45:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:45:49,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:45:49,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:45:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:45:50,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:45:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 10:45:50,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:45:50,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925469566] [2021-10-24 10:45:50,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:45:50,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080950644] [2021-10-24 10:45:50,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080950644] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:45:50,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [209160164] [2021-10-24 10:45:50,209 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:45:50,210 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:45:50,219 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:45:50,226 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:45:50,227 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:45:50,263 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,268 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:45:50,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:45:50,273 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:45:50,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,275 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:45:50,280 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-24 10:45:50,313 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_17|], 21=[|v_#valid_18|]} [2021-10-24 10:45:50,328 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:45:50,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:45:50,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,331 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:45:50,331 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:45:50,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:45:50,341 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:45:50,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,343 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:45:50,343 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:45:50,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 10:45:50,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:45:50,380 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,381 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:45:50,382 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:45:50,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:50,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:50,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 10:45:50,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:45:50,530 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,530 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:45:50,531 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 10:45:50,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:50,568 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,574 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-10-24 10:45:50,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-24 10:45:50,582 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:45:50,582 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:444, output treesize:116 [2021-10-24 10:45:50,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-24 10:45:50,643 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:45:50,680 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-10-24 10:45:50,711 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,724 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-10-24 10:45:50,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:50,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:50,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:50,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:50,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:50,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:50,865 INFO L180 QuantifierPusher]: treesize reduction 34, result has 75.0 percent of original size [2021-10-24 10:45:50,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 10:45:50,880 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,893 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:45:50,903 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-10-24 10:45:50,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,928 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-24 10:45:50,949 INFO L180 QuantifierPusher]: treesize reduction 34, result has 75.0 percent of original size [2021-10-24 10:45:50,964 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 10:45:50,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:50,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:45:50,991 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:51,007 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 128 [2021-10-24 10:45:51,009 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:51,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:51,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:51,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:51,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:51,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:51,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:51,100 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:45:52,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:45:52,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:45:52,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2021-10-24 10:45:52,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253370560] [2021-10-24 10:45:52,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:45:52,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:45:52,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:45:52,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:45:52,516 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:45:52,640 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-10-24 10:45:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:45:52,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 10:45:52,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:45:52,642 INFO L225 Difference]: With dead ends: 42 [2021-10-24 10:45:52,643 INFO L226 Difference]: Without dead ends: 38 [2021-10-24 10:45:52,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1478.8ms TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-24 10:45:52,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-24 10:45:52,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 23. [2021-10-24 10:45:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-24 10:45:52,650 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2021-10-24 10:45:52,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:45:52,651 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-24 10:45:52,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-24 10:45:52,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:45:52,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:45:52,652 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:45:52,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:45:52,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:45:52,878 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:45:52,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:45:52,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1153143100, now seen corresponding path program 1 times [2021-10-24 10:45:52,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:45:52,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822436292] [2021-10-24 10:45:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:45:52,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:45:52,891 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:45:52,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587120138] [2021-10-24 10:45:52,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:45:52,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:45:52,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:45:52,893 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:45:52,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 10:45:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:45:52,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-24 10:45:52,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:45:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:45:53,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:45:53,189 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:45:53,189 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:45:53,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822436292] [2021-10-24 10:45:53,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:45:53,195 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587120138] [2021-10-24 10:45:53,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587120138] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:45:53,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1756847923] [2021-10-24 10:45:53,199 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:45:53,199 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:45:53,200 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:45:53,200 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:45:53,200 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:45:53,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,219 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:45:53,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:45:53,221 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:45:53,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:45:53,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-24 10:45:53,257 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_18|], 21=[|v_#valid_19|]} [2021-10-24 10:45:53,267 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:45:53,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:45:53,269 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:45:53,269 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:45:53,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 10:45:53,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:45:53,297 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:45:53,298 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:45:53,305 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:45:53,305 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:45:53,306 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:45:53,307 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:45:53,308 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:45:53,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 10:45:53,338 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:45:53,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:45:53,344 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-24 10:45:53,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,352 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,356 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-10-24 10:45:53,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-24 10:45:53,360 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:45:53,360 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:444, output treesize:116 [2021-10-24 10:45:53,368 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,378 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-24 10:45:53,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-24 10:45:53,401 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,412 INFO L185 QuantifierPusher]: treesize reduction 15, result has 91.1 percent of original size 153 [2021-10-24 10:45:53,421 INFO L180 QuantifierPusher]: treesize reduction 15, result has 92.3 percent of original size [2021-10-24 10:45:53,444 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-24 10:45:53,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,513 INFO L180 QuantifierPusher]: treesize reduction 34, result has 75.0 percent of original size [2021-10-24 10:45:53,520 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 10:45:53,524 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:45:53,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,546 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-10-24 10:45:53,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,560 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-24 10:45:53,572 INFO L180 QuantifierPusher]: treesize reduction 34, result has 75.0 percent of original size [2021-10-24 10:45:53,578 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-10-24 10:45:53,589 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,596 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-24 10:45:53,606 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:45:53,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-10-24 10:45:53,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,632 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,658 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:53,677 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:45:55,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:45:55,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:45:55,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-10-24 10:45:55,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711869767] [2021-10-24 10:45:55,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 10:45:55,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:45:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 10:45:55,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:45:55,252 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:45:55,424 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2021-10-24 10:45:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:45:55,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 10:45:55,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:45:55,425 INFO L225 Difference]: With dead ends: 34 [2021-10-24 10:45:55,425 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:45:55,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1663.3ms TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-10-24 10:45:55,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:45:55,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:45:55,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:55,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:45:55,427 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-24 10:45:55,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:45:55,427 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:45:55,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:45:55,428 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:45:55,428 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:45:55,431 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:45:55,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:45:55,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:45:55,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:45:55,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:45:55,432 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:45:55,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:45:55,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:45:55,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:45:55,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:55,666 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:55,677 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:55,684 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:55,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:55,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:55,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:45:56,305 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:45:56,305 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:45:56,305 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:45:56,305 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:45:56,306 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:45:56,306 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:45:56,310 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-10-24 10:45:56,311 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:45:56,311 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-10-24 10:45:56,311 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:45:56,311 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) [2021-10-24 10:45:56,312 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:45:56,312 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) [2021-10-24 10:45:56,312 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:45:56,312 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:45:56,312 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (and (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-24 10:45:56,313 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-24 10:45:56,313 INFO L853 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-24 10:45:56,313 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:45:56,313 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:45:56,313 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:45:56,314 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:45:56,314 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:45:56,314 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:45:56,314 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-24 10:45:56,314 INFO L853 garLoopResultBuilder]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) .cse0) (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 1)))) [2021-10-24 10:45:56,315 INFO L857 garLoopResultBuilder]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2021-10-24 10:45:56,315 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-24 10:45:56,320 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:45:56,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:45:56 BoogieIcfgContainer [2021-10-24 10:45:56,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:45:56,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:45:56,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:45:56,340 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:45:56,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:45:47" (3/4) ... [2021-10-24 10:45:56,345 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:45:56,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-10-24 10:45:56,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-24 10:45:56,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:45:56,358 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:45:56,400 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:45:56,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:45:56,402 INFO L168 Benchmark]: Toolchain (without parser) took 9669.09 ms. Allocated memory was 96.5 MB in the beginning and 142.6 MB in the end (delta: 46.1 MB). Free memory was 63.2 MB in the beginning and 55.7 MB in the end (delta: 7.5 MB). Peak memory consumption was 53.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:45:56,402 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:45:56,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.42 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.0 MB in the beginning and 92.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:45:56,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.74 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 90.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:45:56,404 INFO L168 Benchmark]: Boogie Preprocessor took 25.65 ms. Allocated memory is still 117.4 MB. Free memory was 90.9 MB in the beginning and 90.0 MB in the end (delta: 905.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:45:56,404 INFO L168 Benchmark]: RCFGBuilder took 518.72 ms. Allocated memory is still 117.4 MB. Free memory was 90.0 MB in the beginning and 77.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:45:56,405 INFO L168 Benchmark]: TraceAbstraction took 8734.15 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 76.8 MB in the beginning and 58.9 MB in the end (delta: 17.9 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. [2021-10-24 10:45:56,405 INFO L168 Benchmark]: Witness Printer took 61.08 ms. Allocated memory is still 142.6 MB. Free memory was 58.9 MB in the beginning and 55.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:45:56,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 96.5 MB. Free memory is still 49.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.42 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 63.0 MB in the beginning and 92.7 MB in the end (delta: -29.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.74 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 90.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.65 ms. Allocated memory is still 117.4 MB. Free memory was 90.9 MB in the beginning and 90.0 MB in the end (delta: 905.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 518.72 ms. Allocated memory is still 117.4 MB. Free memory was 90.0 MB in the beginning and 77.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8734.15 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 76.8 MB in the beginning and 58.9 MB in the end (delta: 17.9 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. * Witness Printer took 61.08 ms. Allocated memory is still 142.6 MB. Free memory was 58.9 MB in the beginning and 55.7 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: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 8631.4ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 23.6ms, AutomataDifference: 928.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 660.0ms, InitialAbstractionConstructionTime: 14.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 60 SDtfs, 133 SDslu, 104 SDs, 0 SdLazy, 192 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 546.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3255.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=2, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 52.2ms AutomataMinimizationTime, 5 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 26 NumberOfFragments, 166 HoareAnnotationTreeSize, 7 FomulaSimplifications, 232 FormulaSimplificationTreeSizeReduction, 60.8ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 739 FormulaSimplificationTreeSizeReductionInter, 591.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 39.6ms SsaConstructionTime, 144.5ms SatisfiabilityAnalysisTime, 1012.9ms InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 513 SizeOfPredicates, 13 NumberOfNonLiveVariables, 268 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 1/12 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1) || ((t == 1 && t == 2 * a + 1) && s == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1) || (((a == 0 && t == 1) && s == 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 2 * t + t * t + 1 == 4 * s && !(0 == cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(0 == cond) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:45:56,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06f6de1f-1d0b-4310-a793-b402caee4c89/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...