./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-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_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/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_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/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_9ccb2407-b2bb-4ea5-a780-112022a5c194/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 4b2ee659e7bd0f15011c822a777a938a0e6f5b3a8f826a051cccefa88973daa0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 10:07:34,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:07:34,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:07:34,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:07:34,146 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:07:34,147 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:07:34,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:07:34,151 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:07:34,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:07:34,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:07:34,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:07:34,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:07:34,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:07:34,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:07:34,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:07:34,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:07:34,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:07:34,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:07:34,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:07:34,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:07:34,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:07:34,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:07:34,175 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:07:34,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:07:34,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:07:34,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:07:34,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:07:34,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:07:34,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:07:34,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:07:34,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:07:34,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:07:34,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:07:34,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:07:34,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:07:34,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:07:34,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:07:34,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:07:34,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:07:34,192 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:07:34,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:07:34,193 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:07:34,218 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:07:34,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:07:34,219 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:07:34,219 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:07:34,219 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:07:34,220 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:07:34,220 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:07:34,220 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:07:34,221 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:07:34,221 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:07:34,221 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:07:34,221 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:07:34,222 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:07:34,222 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:07:34,222 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:07:34,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:07:34,223 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:07:34,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:07:34,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:07:34,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:07:34,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:07:34,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:07:34,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:07:34,225 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:07:34,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:07:34,226 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:07:34,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:07:34,226 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:07:34,227 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:07:34,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:07:34,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:07:34,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:07:34,228 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:07:34,228 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:07:34,228 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:07:34,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:07:34,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:07:34,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:07:34,229 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:07:34,230 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_9ccb2407-b2bb-4ea5-a780-112022a5c194/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b2ee659e7bd0f15011c822a777a938a0e6f5b3a8f826a051cccefa88973daa0 [2021-10-24 10:07:34,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:07:34,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:07:34,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:07:34,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:07:34,485 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:07:34,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c [2021-10-24 10:07:34,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/data/6a3580491/abdf488115d146b4a666260b3809f1af/FLAG3456b7d26 [2021-10-24 10:07:34,955 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:07:34,955 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c [2021-10-24 10:07:34,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/data/6a3580491/abdf488115d146b4a666260b3809f1af/FLAG3456b7d26 [2021-10-24 10:07:35,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/data/6a3580491/abdf488115d146b4a666260b3809f1af [2021-10-24 10:07:35,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:07:35,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:07:35,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:07:35,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:07:35,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:07:35,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a63a3bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35, skipping insertion in model container [2021-10-24 10:07:35,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:07:35,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:07:35,585 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_9ccb2407-b2bb-4ea5-a780-112022a5c194/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c[458,471] [2021-10-24 10:07:35,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:07:35,609 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:07:35,619 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_9ccb2407-b2bb-4ea5-a780-112022a5c194/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound20.c[458,471] [2021-10-24 10:07:35,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:07:35,639 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:07:35,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35 WrapperNode [2021-10-24 10:07:35,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:07:35,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:07:35,641 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:07:35,642 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:07:35,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:07:35,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:07:35,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:07:35,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:07:35,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:07:35,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:07:35,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:07:35,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:07:35,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (1/1) ... [2021-10-24 10:07:35,705 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:07:35,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:07:35,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:07:35,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:07:35,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:07:35,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:07:35,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:07:35,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:07:36,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:07:36,066 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2021-10-24 10:07:36,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:07:36 BoogieIcfgContainer [2021-10-24 10:07:36,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:07:36,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:07:36,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:07:36,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:07:36,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:07:35" (1/3) ... [2021-10-24 10:07:36,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6a6c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:07:36, skipping insertion in model container [2021-10-24 10:07:36,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:07:35" (2/3) ... [2021-10-24 10:07:36,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c6a6c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:07:36, skipping insertion in model container [2021-10-24 10:07:36,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:07:36" (3/3) ... [2021-10-24 10:07:36,076 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound20.c [2021-10-24 10:07:36,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:07:36,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 10:07:36,125 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:07:36,131 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 10:07:36,132 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:07:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 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 10:07:36,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:07:36,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:07:36,150 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:07:36,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:07:36,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:07:36,155 INFO L82 PathProgramCache]: Analyzing trace with hash 3301933, now seen corresponding path program 1 times [2021-10-24 10:07:36,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:07:36,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751550956] [2021-10-24 10:07:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:07:36,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:07:36,262 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:07:36,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129106294] [2021-10-24 10:07:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:07:36,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:07:36,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:07:36,265 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:07:36,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:07:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:07:36,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:07:36,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:07:36,492 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 10:07:36,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:07:36,855 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 10:07:36,856 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:07:36,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751550956] [2021-10-24 10:07:36,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:07:36,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129106294] [2021-10-24 10:07:36,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129106294] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:07:36,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:07:36,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:07:36,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765379409] [2021-10-24 10:07:36,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:07:36,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:07:36,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:07:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:07:36,898 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 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) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 10:07:37,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:07:37,837 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-10-24 10:07:37,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:07:37,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 10:07:37,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:07:37,845 INFO L225 Difference]: With dead ends: 36 [2021-10-24 10:07:37,845 INFO L226 Difference]: Without dead ends: 13 [2021-10-24 10:07:37,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 383.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:07:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-24 10:07:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-24 10:07:37,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 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 10:07:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-24 10:07:37,882 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-10-24 10:07:37,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:07:37,883 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-24 10:07:37,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 10:07:37,884 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-24 10:07:37,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:07:37,885 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:07:37,885 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:07:37,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-24 10:07:38,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 10:07:38,108 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:07:38,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:07:38,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1160044347, now seen corresponding path program 1 times [2021-10-24 10:07:38,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:07:38,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034726517] [2021-10-24 10:07:38,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:07:38,120 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:07:38,172 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:07:38,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353674169] [2021-10-24 10:07:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:07:38,173 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:07:38,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:07:38,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:07:38,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:07:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:07:38,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:07:38,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:07:38,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:07:38,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:07:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:07:38,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:07:38,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034726517] [2021-10-24 10:07:38,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:07:38,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353674169] [2021-10-24 10:07:38,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353674169] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:07:38,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [877776114] [2021-10-24 10:07:38,787 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:07:38,788 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:07:38,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:07:38,797 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:07:38,798 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:07:38,829 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-10-24 10:07:38,832 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:07:38,832 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:38,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:07:38,834 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:07:38,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:38,835 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:07:38,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-24 10:07:38,862 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-24 10:07:38,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:38,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:38,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:38,893 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 10:07:38,894 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:38,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:07:38,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:38,896 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:07:38,897 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:07:38,917 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:07:38,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:38,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:07:38,919 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:38,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:07:38,921 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:07:38,923 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:39,002 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:39,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:39,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:39,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:39,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:39,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:39,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:39,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:39,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:39,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:39,042 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 10:07:39,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:39,046 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:07:39,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:39,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:07:39,048 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:07:39,048 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:39,068 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:39,075 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.5 percent of original size [2021-10-24 10:07:39,086 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-24 10:07:39,087 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:07:39,089 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:290, output treesize:116 [2021-10-24 10:07:39,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:39,122 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 304 [2021-10-24 10:07:39,130 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:39,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:39,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:39,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:39,187 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:39,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:39,253 INFO L180 QuantifierPusher]: treesize reduction 65, result has 71.0 percent of original size [2021-10-24 10:07:39,261 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-10-24 10:07:39,287 INFO L180 QuantifierPusher]: treesize reduction 89, result has 71.0 percent of original size [2021-10-24 10:07:39,295 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-24 10:07:39,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:39,322 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-24 10:07:39,330 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:07:40,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:07:40,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:07:40,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-24 10:07:40,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871706843] [2021-10-24 10:07:40,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:07:40,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:07:40,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:07:40,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-24 10:07:40,356 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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 10:07:40,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:07:40,939 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2021-10-24 10:07:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 10:07:40,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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 12 [2021-10-24 10:07:40,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:07:40,942 INFO L225 Difference]: With dead ends: 36 [2021-10-24 10:07:40,942 INFO L226 Difference]: Without dead ends: 22 [2021-10-24 10:07:40,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1548.2ms TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-10-24 10:07:40,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-24 10:07:40,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-10-24 10:07:40,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 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 10:07:40,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-24 10:07:40,951 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 12 [2021-10-24 10:07:40,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:07:40,951 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-24 10:07:40,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 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 10:07:40,951 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-24 10:07:40,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-24 10:07:40,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:07:40,952 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:07:40,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-24 10:07:41,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-24 10:07:41,172 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:07:41,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:07:41,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1362449055, now seen corresponding path program 2 times [2021-10-24 10:07:41,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:07:41,175 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8453650] [2021-10-24 10:07:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:07:41,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:07:41,217 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:07:41,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437737132] [2021-10-24 10:07:41,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 10:07:41,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:07:41,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:07:41,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:07:41,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:07:41,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-24 10:07:41,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 10:07:41,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-24 10:07:41,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:07:41,945 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:07:41,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:07:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:07:42,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:07:42,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8453650] [2021-10-24 10:07:42,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:07:42,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437737132] [2021-10-24 10:07:42,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437737132] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:07:42,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [142940633] [2021-10-24 10:07:42,738 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-10-24 10:07:42,738 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:07:42,738 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:07:42,738 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:07:42,739 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:07:42,746 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.1 percent of original size [2021-10-24 10:07:42,747 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:07:42,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,748 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:07:42,749 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:07:42,749 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:07:42,752 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 157 [2021-10-24 10:07:42,757 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-10-24 10:07:42,768 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-24 10:07:42,769 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,769 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:07:42,773 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-24 10:07:42,774 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:07:42,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,792 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 10:07:42,793 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:07:42,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:07:42,795 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:07:42,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:42,812 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:07:42,834 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 10:07:42,835 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,837 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:07:42,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,838 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:07:42,839 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-24 10:07:42,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:42,846 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,849 INFO L180 QuantifierPusher]: treesize reduction 3, result has 97.5 percent of original size [2021-10-24 10:07:42,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-24 10:07:42,851 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:07:42,851 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:290, output treesize:116 [2021-10-24 10:07:42,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,863 INFO L185 QuantifierPusher]: treesize reduction 6, result has 95.6 percent of original size 131 [2021-10-24 10:07:42,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:42,887 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:42,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:42,952 INFO L180 QuantifierPusher]: treesize reduction 29, result has 93.1 percent of original size [2021-10-24 10:07:42,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 381 [2021-10-24 10:07:42,967 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:42,979 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 515 [2021-10-24 10:07:42,993 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:43,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:43,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:43,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:43,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:43,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:43,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:43,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:43,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:43,095 INFO L180 QuantifierPusher]: treesize reduction 65, result has 71.0 percent of original size [2021-10-24 10:07:43,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-10-24 10:07:43,114 INFO L180 QuantifierPusher]: treesize reduction 89, result has 71.0 percent of original size [2021-10-24 10:07:43,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-24 10:07:43,126 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:07:43,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 115 [2021-10-24 10:07:43,143 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:07:44,111 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:07:44,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:07:44,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-10-24 10:07:44,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533516108] [2021-10-24 10:07:44,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-24 10:07:44,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:07:44,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-24 10:07:44,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-10-24 10:07:44,114 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 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 10:07:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:07:45,308 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-24 10:07:45,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-24 10:07:45,308 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 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 21 [2021-10-24 10:07:45,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:07:45,309 INFO L225 Difference]: With dead ends: 29 [2021-10-24 10:07:45,309 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:07:45,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 2250.6ms TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2021-10-24 10:07:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:07:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:07:45,310 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 10:07:45,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:07:45,311 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2021-10-24 10:07:45,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:07:45,311 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:07:45,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 14 states have internal predecessors, (40), 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 10:07:45,311 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:07:45,311 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:07:45,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:07:45,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:07:45,314 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:07:45,333 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-24 10:07:45,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-24 10:07:45,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:07:45,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:45,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:45,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:45,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:07:46,063 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-24 10:07:46,063 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-24 10:07:46,063 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-24 10:07:46,063 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-24 10:07:46,064 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:07:46,064 INFO L853 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~x~0 0) (= ULTIMATE.start_main_~c~0 0)) (let ((.cse0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (and (= (+ (* 6 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ .cse0 (* 12 ULTIMATE.start_main_~x~0))) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) .cse0) (< ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~k~0)) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 4) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 3)) (= (+ 16 (* 8 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* 4 ULTIMATE.start_main_~k~0))))) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 3) ULTIMATE.start_main_~k~0) (= (+ (* 3 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) (+ 9 (* 6 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 2))))))) [2021-10-24 10:07:46,064 INFO L857 garLoopResultBuilder]: For program point L28-3(lines 28 37) no Hoare annotation was computed. [2021-10-24 10:07:46,064 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-24 10:07:46,064 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:07:46,064 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-24 10:07:46,065 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-24 10:07:46,065 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 31 32) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (and (= (+ (* 6 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ .cse0 (* 12 ULTIMATE.start_main_~x~0))) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (or (= (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) .cse0) (< ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~k~0)) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 4) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 3)) (= (+ 16 (* 8 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* 4 ULTIMATE.start_main_~k~0))))) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ ULTIMATE.start_main_~c~0 3) ULTIMATE.start_main_~k~0) (= (+ (* 3 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) (+ 9 (* 6 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 2)))))) [2021-10-24 10:07:46,065 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-24 10:07:46,065 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (and (= (+ (* 6 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ .cse0 (* 12 ULTIMATE.start_main_~x~0))) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) .cse0))) [2021-10-24 10:07:46,065 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-24 10:07:46,065 INFO L853 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: (= (+ (* 6 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 5 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 12 ULTIMATE.start_main_~x~0))) [2021-10-24 10:07:46,069 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:07:46,076 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,077 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,077 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,077 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,077 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,077 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,078 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,078 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,085 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,085 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,085 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,085 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,086 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,086 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,086 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,086 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,088 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,089 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,090 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,090 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,091 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,092 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:07:46 BoogieIcfgContainer [2021-10-24 10:07:46,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:07:46,095 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:07:46,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:07:46,095 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:07:46,096 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:07:36" (3/4) ... [2021-10-24 10:07:46,098 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:07:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-24 10:07:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-24 10:07:46,107 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:07:46,108 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:07:46,141 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:07:46,142 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:07:46,142 INFO L168 Benchmark]: Toolchain (without parser) took 10739.78 ms. Allocated memory was 90.2 MB in the beginning and 142.6 MB in the end (delta: 52.4 MB). Free memory was 57.6 MB in the beginning and 77.2 MB in the end (delta: -19.6 MB). Peak memory consumption was 32.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:46,143 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 90.2 MB. Free memory was 58.7 MB in the beginning and 58.7 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:07:46,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.20 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 57.3 MB in the beginning and 92.8 MB in the end (delta: -35.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:46,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.93 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:07:46,144 INFO L168 Benchmark]: Boogie Preprocessor took 21.49 ms. Allocated memory is still 117.4 MB. Free memory was 91.4 MB in the beginning and 90.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:46,145 INFO L168 Benchmark]: RCFGBuilder took 371.77 ms. Allocated memory is still 117.4 MB. Free memory was 90.2 MB in the beginning and 77.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:46,145 INFO L168 Benchmark]: TraceAbstraction took 10024.06 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 77.1 MB in the beginning and 80.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:46,146 INFO L168 Benchmark]: Witness Printer took 46.86 ms. Allocated memory is still 142.6 MB. Free memory was 80.3 MB in the beginning and 77.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:07:46,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 90.2 MB. Free memory was 58.7 MB in the beginning and 58.7 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.20 ms. Allocated memory was 90.2 MB in the beginning and 117.4 MB in the end (delta: 27.3 MB). Free memory was 57.3 MB in the beginning and 92.8 MB in the end (delta: -35.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.93 ms. Allocated memory is still 117.4 MB. Free memory was 92.8 MB in the beginning and 91.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.49 ms. Allocated memory is still 117.4 MB. Free memory was 91.4 MB in the beginning and 90.2 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 371.77 ms. Allocated memory is still 117.4 MB. Free memory was 90.2 MB in the beginning and 77.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10024.06 ms. Allocated memory was 117.4 MB in the beginning and 142.6 MB in the end (delta: 25.2 MB). Free memory was 77.1 MB in the beginning and 80.3 MB in the end (delta: -3.2 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. * Witness Printer took 46.86 ms. Allocated memory is still 142.6 MB. Free memory was 80.3 MB in the beginning and 77.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] * 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: 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, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9945.9ms, OverallIterations: 3, TraceHistogramMax: 5, EmptinessCheckTime: 9.5ms, AutomataDifference: 2769.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 532.7ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 97 SDslu, 53 SDs, 0 SdLazy, 161 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1287.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 4182.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 24 NumberOfFragments, 296 HoareAnnotationTreeSize, 4 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 31.7ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 748 FormulaSimplificationTreeSizeReductionInter, 484.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 23.1ms SsaConstructionTime, 427.2ms SatisfiabilityAnalysisTime, 2106.8ms InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 15 QuantifiedInterpolants, 793 SizeOfPredicates, 13 NumberOfNonLiveVariables, 238 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/66 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 3 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant [2021-10-24 10:07:46,174 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,174 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,174 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,174 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,175 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,175 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,175 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,175 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,176 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,177 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,177 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,178 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,178 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,178 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,178 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,178 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] Derived loop invariant: (((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && 1 <= cond) && (y * k == y * y || c < k)) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 4 < ULTIMATE.start_main_~k~0 || ULTIMATE.start_main_~k~0 <= c + 3) || 16 + 8 * y + y * y == y * ULTIMATE.start_main_~k~0 + 4 * ULTIMATE.start_main_~k~0)) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 3 < ULTIMATE.start_main_~k~0 || 3 * ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0 == 9 + 6 * y + y * y) || ULTIMATE.start_main_~k~0 <= c + 2) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x - InvariantResult [Line: 28]: Loop Invariant [2021-10-24 10:07:46,185 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,188 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,188 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,188 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,188 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,188 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,189 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,190 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,190 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,195 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,196 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,196 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,196 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,196 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,196 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-24 10:07:46,196 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] Derived loop invariant: ((y == 0 && x == 0) && c == 0) || ((((6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && 1 <= cond) && (y * k == y * y || c < k)) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 4 < ULTIMATE.start_main_~k~0 || ULTIMATE.start_main_~k~0 <= c + 3) || 16 + 8 * y + y * y == y * ULTIMATE.start_main_~k~0 + 4 * ULTIMATE.start_main_~k~0)) && (forall ULTIMATE.start_main_~k~0 : int :: (c + 3 < ULTIMATE.start_main_~k~0 || 3 * ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0 == 9 + 6 * y + y * y) || ULTIMATE.start_main_~k~0 <= c + 2)) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (6 * (y * y * y * y * y) + 5 * (y * y * y * y) + 2 * (y * y * y * y * y * y) == y * y + 12 * x && 1 <= cond) && y * k == y * y RESULT: Ultimate proved your program to be correct! [2021-10-24 10:07:46,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ccb2407-b2bb-4ea5-a780-112022a5c194/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...