./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.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_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw --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 dcebefc76bde79b9a5fa67feebc75881761b0a4209b78516b385f787f62f9340 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:01:14,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:01:14,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:01:14,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:01:14,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:01:14,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:01:14,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:01:14,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:01:14,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:01:14,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:01:14,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:01:14,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:01:14,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:01:14,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:01:14,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:01:14,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:01:14,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:01:14,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:01:14,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:01:14,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:01:14,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:01:14,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:01:14,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:01:14,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:01:14,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:01:14,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:01:14,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:01:14,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:01:14,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:01:14,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:01:14,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:01:14,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:01:14,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:01:14,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:01:14,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:01:14,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:01:14,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:01:14,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:01:14,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:01:14,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:01:14,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:01:14,796 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-20 06:01:14,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:01:14,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:01:14,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:01:14,845 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:01:14,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:01:14,845 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:01:14,845 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:01:14,846 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:01:14,846 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:01:14,846 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:01:14,855 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:01:14,856 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:01:14,856 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:01:14,857 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:01:14,857 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:01:14,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:01:14,858 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-20 06:01:14,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:01:14,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-20 06:01:14,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:01:14,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:01:14,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:01:14,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:01:14,860 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-20 06:01:14,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-20 06:01:14,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:01:14,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:01:14,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:01:14,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:01:14,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:01:14,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:01:14,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:01:14,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:01:14,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:01:14,864 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:01:14,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:01:14,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:01:14,865 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:01:14,865 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:01:14,865 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_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcebefc76bde79b9a5fa67feebc75881761b0a4209b78516b385f787f62f9340 [2021-10-20 06:01:15,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:01:15,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:01:15,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:01:15,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:01:15,208 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:01:15,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.c [2021-10-20 06:01:15,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/data/922932b43/5e71d121cec6497a86e1be0f053f97d7/FLAG09271ff6f [2021-10-20 06:01:15,810 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:01:15,811 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.c [2021-10-20 06:01:15,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/data/922932b43/5e71d121cec6497a86e1be0f053f97d7/FLAG09271ff6f [2021-10-20 06:01:16,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/data/922932b43/5e71d121cec6497a86e1be0f053f97d7 [2021-10-20 06:01:16,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:01:16,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:01:16,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:01:16,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:01:16,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:01:16,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4395db07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16, skipping insertion in model container [2021-10-20 06:01:16,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:01:16,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:01:16,395 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_6269c335-9b31-4134-b3c5-505c1bca9f08/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.c[458,471] [2021-10-20 06:01:16,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:01:16,421 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:01:16,435 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_6269c335-9b31-4134-b3c5-505c1bca9f08/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound50.c[458,471] [2021-10-20 06:01:16,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:01:16,456 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:01:16,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16 WrapperNode [2021-10-20 06:01:16,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:01:16,458 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:01:16,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:01:16,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:01:16,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:01:16,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:01:16,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:01:16,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:01:16,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,517 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:01:16,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:01:16,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:01:16,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:01:16,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (1/1) ... [2021-10-20 06:01:16,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:01:16,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:01:16,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:01:16,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:01:16,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-20 06:01:16,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-20 06:01:16,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:01:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:01:16,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:01:16,954 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-20 06:01:16,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:01:16 BoogieIcfgContainer [2021-10-20 06:01:16,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:01:16,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:01:16,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:01:16,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:01:16,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:01:16" (1/3) ... [2021-10-20 06:01:16,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a04f792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:01:16, skipping insertion in model container [2021-10-20 06:01:16,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:01:16" (2/3) ... [2021-10-20 06:01:16,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a04f792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:01:16, skipping insertion in model container [2021-10-20 06:01:16,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:01:16" (3/3) ... [2021-10-20 06:01:16,966 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound50.c [2021-10-20 06:01:16,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:01:16,973 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-20 06:01:17,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:01:17,036 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 [2021-10-20 06:01:17,036 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-20 06:01:17,052 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) [2021-10-20 06:01:17,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 06:01:17,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:01:17,058 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 06:01:17,059 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:01:17,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:01:17,066 INFO L82 PathProgramCache]: Analyzing trace with hash 2997072, now seen corresponding path program 1 times [2021-10-20 06:01:17,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:01:17,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350104263] [2021-10-20 06:01:17,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:01:17,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:01:17,243 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:01:17,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998598462] [2021-10-20 06:01:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:01:17,248 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:01:17,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:01:17,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:01:17,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:01:17,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:01:17,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-20 06:01:17,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:01:17,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:01:17,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:01:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:01:18,060 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:01:18,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350104263] [2021-10-20 06:01:18,061 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:01:18,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998598462] [2021-10-20 06:01:18,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998598462] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-20 06:01:18,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:01:18,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-20 06:01:18,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252126430] [2021-10-20 06:01:18,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:01:18,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:01:18,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:01:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:01:18,101 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) [2021-10-20 06:01:18,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:01:18,272 INFO L93 Difference]: Finished difference Result 36 states and 48 transitions. [2021-10-20 06:01:18,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-20 06:01:18,274 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 [2021-10-20 06:01:18,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:01:18,284 INFO L225 Difference]: With dead ends: 36 [2021-10-20 06:01:18,284 INFO L226 Difference]: Without dead ends: 11 [2021-10-20 06:01:18,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 512.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-20 06:01:18,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-20 06:01:18,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-20 06:01:18,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-10-20 06:01:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-20 06:01:18,322 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-10-20 06:01:18,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:01:18,323 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-20 06:01:18,323 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) [2021-10-20 06:01:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-20 06:01:18,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 06:01:18,324 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:01:18,325 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-10-20 06:01:18,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:01:18,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-20 06:01:18,534 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:01:18,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:01:18,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1480619493, now seen corresponding path program 1 times [2021-10-20 06:01:18,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:01:18,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514820906] [2021-10-20 06:01:18,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:01:18,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:01:18,569 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:01:18,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319217970] [2021-10-20 06:01:18,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:01:18,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:01:18,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:01:18,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:01:18,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-20 06:01:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:01:18,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-20 06:01:18,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:01:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:01:19,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:01:19,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:01:19,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:01:19,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514820906] [2021-10-20 06:01:19,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:01:19,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319217970] [2021-10-20 06:01:19,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319217970] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:01:19,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [355226579] [2021-10-20 06:01:19,417 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-20 06:01:19,417 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:01:19,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:01:19,431 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:01:19,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:01:19,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,477 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:01:19,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 06:01:19,481 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:01:19,482 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,483 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 06:01:19,488 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-20 06:01:19,535 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_13|], 21=[|v_#valid_14|]} [2021-10-20 06:01:19,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,591 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 [2021-10-20 06:01:19,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:01:19,594 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,595 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:01:19,596 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:01:19,620 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-20 06:01:19,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:01:19,622 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:01:19,625 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:01:19,638 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-20 06:01:19,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:01:19,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:01:19,647 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-20 06:01:19,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:19,716 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:19,749 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 [2021-10-20 06:01:19,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:01:19,754 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,755 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:01:19,756 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-20 06:01:19,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:19,788 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,792 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-10-20 06:01:19,796 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-20 06:01:19,797 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:01:19,798 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:444, output treesize:116 [2021-10-20 06:01:19,811 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:19,833 INFO L185 QuantifierPusher]: treesize reduction 12, result has 92.9 percent of original size 156 [2021-10-20 06:01:19,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:19,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:19,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:19,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:19,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:19,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:20,007 INFO L180 QuantifierPusher]: treesize reduction 57, result has 69.4 percent of original size [2021-10-20 06:01:20,020 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-20 06:01:20,078 INFO L180 QuantifierPusher]: treesize reduction 65, result has 68.0 percent of original size [2021-10-20 06:01:20,098 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-20 06:01:20,122 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:01:21,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:01:21,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-20 06:01:21,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-20 06:01:21,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103820483] [2021-10-20 06:01:21,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-20 06:01:21,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:01:21,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-20 06:01:21,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-10-20 06:01:21,245 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-10-20 06:01:21,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:01:21,967 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-20 06:01:21,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-20 06:01:21,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 10 [2021-10-20 06:01:21,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:01:21,969 INFO L225 Difference]: With dead ends: 28 [2021-10-20 06:01:21,969 INFO L226 Difference]: Without dead ends: 20 [2021-10-20 06:01:21,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1790.8ms TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-10-20 06:01:21,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-20 06:01:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-20 06:01:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 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) [2021-10-20 06:01:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-20 06:01:21,979 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2021-10-20 06:01:21,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:01:21,980 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-20 06:01:21,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-10-20 06:01:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-20 06:01:21,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-20 06:01:21,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:01:21,982 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1] [2021-10-20 06:01:22,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-20 06:01:22,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:01:22,197 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:01:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:01:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash -2122995756, now seen corresponding path program 2 times [2021-10-20 06:01:22,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:01:22,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383140885] [2021-10-20 06:01:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:01:22,198 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:01:22,213 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:01:22,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939149152] [2021-10-20 06:01:22,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-20 06:01:22,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:01:22,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:01:22,215 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:01:22,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-20 06:01:22,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-20 06:01:22,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-20 06:01:22,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-20 06:01:22,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:01:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:01:22,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:01:27,366 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ c_ULTIMATE.start_main_~c~0 1) c_ULTIMATE.start_main_~k~0) (= (+ (* 2 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) 1) (+ c_ULTIMATE.start_main_~k~0 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~k~0))) (not (= (mod (+ (* (- 1) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* (- 1) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* (- 2) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (- 4)) 0)) (<= c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0)) is different from false [2021-10-20 06:01:31,405 WARN L838 $PredicateComparison]: unable to prove that (or (< (+ c_ULTIMATE.start_main_~c~0 2) c_ULTIMATE.start_main_~k~0) (not (= (mod (let ((.cse0 (+ c_ULTIMATE.start_main_~y~0 1))) (+ (* (- 2) .cse0 .cse0 .cse0) (* (- 1) .cse0 .cse0) (* (- 1) .cse0 .cse0 .cse0 .cse0))) (- 4)) 0)) (<= c_ULTIMATE.start_main_~k~0 (+ c_ULTIMATE.start_main_~c~0 1)) (= (+ (* 4 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) 4) (+ (* 2 c_ULTIMATE.start_main_~k~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~k~0)))) is different from false [2021-10-20 06:01:55,323 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~k~0 Int)) (or (< (+ c_ULTIMATE.start_main_~c~0 4) ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~k~0 (+ c_ULTIMATE.start_main_~c~0 3)) (= (+ 16 (* 8 c_ULTIMATE.start_main_~y~0) (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (+ (* c_ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0) (* 4 ULTIMATE.start_main_~k~0))))) (not (= (mod (let ((.cse0 (+ c_ULTIMATE.start_main_~y~0 3))) (+ (* (- 1) .cse0 .cse0) (* (- 1) .cse0 .cse0 .cse0 .cse0) (* (- 2) .cse0 .cse0 .cse0))) (- 4)) 0))) is different from false [2021-10-20 06:01:59,425 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 23 not checked. [2021-10-20 06:01:59,426 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:01:59,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383140885] [2021-10-20 06:01:59,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:01:59,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939149152] [2021-10-20 06:01:59,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939149152] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:01:59,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1241435215] [2021-10-20 06:01:59,430 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-20 06:01:59,430 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:01:59,430 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:01:59,431 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:01:59,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:01:59,444 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,445 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:01:59,446 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,446 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 06:01:59,447 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:01:59,448 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,449 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 06:01:59,451 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-20 06:01:59,459 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_14|], 21=[|v_#valid_15|]} [2021-10-20 06:01:59,467 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-20 06:01:59,467 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:01:59,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:01:59,469 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:01:59,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,499 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 [2021-10-20 06:01:59,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:01:59,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:01:59,502 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:01:59,509 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-20 06:01:59,510 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,511 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:01:59,511 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,512 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:01:59,512 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-20 06:01:59,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:59,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:01:59,558 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 [2021-10-20 06:01:59,559 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,562 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:01:59,563 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,564 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:01:59,564 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-20 06:01:59,565 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:59,571 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,574 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-10-20 06:01:59,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-20 06:01:59,577 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:01:59,577 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:444, output treesize:116 [2021-10-20 06:01:59,582 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:01:59,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 172 [2021-10-20 06:01:59,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:59,612 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:59,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:59,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:59,617 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:59,626 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:01:59,636 INFO L180 QuantifierPusher]: treesize reduction 57, result has 69.4 percent of original size [2021-10-20 06:01:59,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-20 06:01:59,655 INFO L180 QuantifierPusher]: treesize reduction 65, result has 68.0 percent of original size [2021-10-20 06:01:59,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-20 06:01:59,668 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:02:00,773 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:02:00,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-20 06:02:00,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-20 06:02:00,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035402739] [2021-10-20 06:02:00,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-20 06:02:00,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:02:00,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-20 06:02:00,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=532, Unknown=4, NotChecked=150, Total=812 [2021-10-20 06:02:00,776 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 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) [2021-10-20 06:02:05,270 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (.cse4 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~k~0)) (.cse6 (+ c_ULTIMATE.start_main_~c~0 1))) (let ((.cse1 (< .cse6 c_ULTIMATE.start_main_~k~0)) (.cse2 (= (+ (* 2 c_ULTIMATE.start_main_~y~0) .cse0 1) (+ c_ULTIMATE.start_main_~k~0 .cse4))) (.cse3 (<= c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0))) (and (or (not (= (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) .cse0 (* 2 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (* 4 c_ULTIMATE.start_main_~x~0))) .cse1 .cse2 .cse3) (<= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) (or (= .cse4 .cse0) (< c_ULTIMATE.start_main_~c~0 c_ULTIMATE.start_main_~k~0)) (or .cse1 .cse2 (not (= (mod (+ (* (- 1) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* (- 1) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* (- 2) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (- 4)) 0)) .cse3) (or (< (+ c_ULTIMATE.start_main_~c~0 2) c_ULTIMATE.start_main_~k~0) (not (= (mod (let ((.cse5 (+ c_ULTIMATE.start_main_~y~0 1))) (+ (* (- 2) .cse5 .cse5 .cse5) (* (- 1) .cse5 .cse5) (* (- 1) .cse5 .cse5 .cse5 .cse5))) (- 4)) 0)) (<= c_ULTIMATE.start_main_~k~0 .cse6) (= (+ (* 4 c_ULTIMATE.start_main_~y~0) .cse0 4) (+ (* 2 c_ULTIMATE.start_main_~k~0) .cse4)))))) is different from false [2021-10-20 06:02:31,366 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (.cse1 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~k~0))) (and (or (not (= (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) .cse0 (* 2 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (* 4 c_ULTIMATE.start_main_~x~0))) (= .cse1 .cse0) (< c_ULTIMATE.start_main_~c~0 c_ULTIMATE.start_main_~k~0)) (or (< (+ c_ULTIMATE.start_main_~c~0 1) c_ULTIMATE.start_main_~k~0) (= (+ (* 2 c_ULTIMATE.start_main_~y~0) .cse0 1) (+ c_ULTIMATE.start_main_~k~0 .cse1)) (not (= (mod (+ (* (- 1) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* (- 1) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) (* (- 2) c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0)) (- 4)) 0)) (<= c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0)))) is different from false [2021-10-20 06:02:45,705 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~k~0)) (.cse0 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (and (or (not (= (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) .cse0 (* 2 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (* 4 c_ULTIMATE.start_main_~x~0))) (< (+ c_ULTIMATE.start_main_~c~0 1) c_ULTIMATE.start_main_~k~0) (= (+ (* 2 c_ULTIMATE.start_main_~y~0) .cse0 1) (+ c_ULTIMATE.start_main_~k~0 .cse1)) (<= c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0)) (<= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) (= .cse1 .cse0) (or (< (+ c_ULTIMATE.start_main_~c~0 3) c_ULTIMATE.start_main_~k~0) (not (= (mod (let ((.cse2 (+ c_ULTIMATE.start_main_~y~0 2))) (+ (* (- 1) .cse2 .cse2) (* (- 1) .cse2 .cse2 .cse2 .cse2) (* (- 2) .cse2 .cse2 .cse2))) (- 4)) 0)) (= (+ (* 3 c_ULTIMATE.start_main_~k~0) .cse1) (+ 9 (* 6 c_ULTIMATE.start_main_~y~0) .cse0)) (<= c_ULTIMATE.start_main_~k~0 (+ c_ULTIMATE.start_main_~c~0 2))))) is different from false [2021-10-20 06:02:47,863 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~k~0)) (.cse0 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (and (or (not (= (+ (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0) .cse0 (* 2 (* c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~y~0))) (* 4 c_ULTIMATE.start_main_~x~0))) (< (+ c_ULTIMATE.start_main_~c~0 1) c_ULTIMATE.start_main_~k~0) (= (+ (* 2 c_ULTIMATE.start_main_~y~0) .cse0 1) (+ c_ULTIMATE.start_main_~k~0 .cse1)) (<= c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0)) (or (< (+ c_ULTIMATE.start_main_~c~0 3) c_ULTIMATE.start_main_~k~0) (not (= (mod (let ((.cse2 (+ c_ULTIMATE.start_main_~y~0 2))) (+ (* (- 1) .cse2 .cse2) (* (- 1) .cse2 .cse2 .cse2 .cse2) (* (- 2) .cse2 .cse2 .cse2))) (- 4)) 0)) (= (+ (* 3 c_ULTIMATE.start_main_~k~0) .cse1) (+ 9 (* 6 c_ULTIMATE.start_main_~y~0) .cse0)) (<= c_ULTIMATE.start_main_~k~0 (+ c_ULTIMATE.start_main_~c~0 2))))) is different from false [2021-10-20 06:02:47,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:02:47,869 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-20 06:02:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-20 06:02:47,870 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 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 19 [2021-10-20 06:02:47,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:02:47,871 INFO L225 Difference]: With dead ends: 38 [2021-10-20 06:02:47,871 INFO L226 Difference]: Without dead ends: 32 [2021-10-20 06:02:47,873 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 59768.4ms TimeCoverageRelationStatistics Valid=298, Invalid=1125, Unknown=11, NotChecked=546, Total=1980 [2021-10-20 06:02:47,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-20 06:02:47,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-20 06:02:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 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) [2021-10-20 06:02:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-10-20 06:02:47,887 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 19 [2021-10-20 06:02:47,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:02:47,887 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-10-20 06:02:47,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 22 states have internal predecessors, (36), 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) [2021-10-20 06:02:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-10-20 06:02:47,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-20 06:02:47,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:02:47,889 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1] [2021-10-20 06:02:47,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-20 06:02:48,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-20 06:02:48,098 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-20 06:02:48,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:02:48,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1704117396, now seen corresponding path program 3 times [2021-10-20 06:02:48,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:02:48,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729675282] [2021-10-20 06:02:48,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:02:48,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:02:48,126 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-20 06:02:48,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [110519901] [2021-10-20 06:02:48,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-20 06:02:48,128 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:02:48,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:02:48,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:02:48,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-20 06:02:49,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-20 06:02:49,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-20 06:02:49,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 40 conjunts are in the unsatisfiable core [2021-10-20 06:02:49,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:02:49,534 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:02:49,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:02:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:02:50,903 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:02:50,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729675282] [2021-10-20 06:02:50,904 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:02:50,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110519901] [2021-10-20 06:02:50,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110519901] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:02:50,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1081321713] [2021-10-20 06:02:50,907 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-10-20 06:02:50,907 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:02:50,907 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:02:50,908 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:02:50,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:02:50,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,916 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:02:50,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-20 06:02:50,918 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-20 06:02:50,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 06:02:50,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-20 06:02:50,927 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_15|], 21=[|v_#valid_16|]} [2021-10-20 06:02:50,934 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-20 06:02:50,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:02:50,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,937 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:02:50,937 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-20 06:02:50,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:50,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:50,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:50,960 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 [2021-10-20 06:02:50,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,962 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:02:50,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-20 06:02:50,963 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-20 06:02:50,979 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-20 06:02:50,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:02:50,981 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-20 06:02:50,982 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-20 06:02:50,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:50,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:50,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:50,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:50,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:50,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:50,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:51,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:51,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:51,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:51,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-20 06:02:51,014 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 [2021-10-20 06:02:51,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:51,018 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:02:51,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:51,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-20 06:02:51,023 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-20 06:02:51,024 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:51,030 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:51,033 INFO L180 QuantifierPusher]: treesize reduction 8, result has 93.5 percent of original size [2021-10-20 06:02:51,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-20 06:02:51,035 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-20 06:02:51,036 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:444, output treesize:116 [2021-10-20 06:02:51,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:02:51,050 INFO L185 QuantifierPusher]: treesize reduction 78, result has 69.0 percent of original size 174 [2021-10-20 06:02:51,056 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:51,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:51,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:51,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:51,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:51,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:51,120 INFO L180 QuantifierPusher]: treesize reduction 57, result has 69.4 percent of original size [2021-10-20 06:02:51,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 167 [2021-10-20 06:02:51,143 INFO L180 QuantifierPusher]: treesize reduction 65, result has 68.0 percent of original size [2021-10-20 06:02:51,148 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 101 [2021-10-20 06:02:51,153 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:02:52,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-20 06:02:52,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-20 06:02:52,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-10-20 06:02:52,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810157414] [2021-10-20 06:02:52,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-20 06:02:52,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:02:52,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-20 06:02:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2021-10-20 06:02:52,249 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 22 states have internal predecessors, (60), 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) [2021-10-20 06:02:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:02:56,714 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2021-10-20 06:02:56,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-20 06:02:56,715 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 22 states have internal predecessors, (60), 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 31 [2021-10-20 06:02:56,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:02:56,715 INFO L225 Difference]: With dead ends: 37 [2021-10-20 06:02:56,715 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:02:56,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 5321.4ms TimeCoverageRelationStatistics Valid=318, Invalid=1404, Unknown=0, NotChecked=0, Total=1722 [2021-10-20 06:02:56,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:02:56,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:02:56,718 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) [2021-10-20 06:02:56,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:02:56,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2021-10-20 06:02:56,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:02:56,718 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:02:56,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 22 states have internal predecessors, (60), 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) [2021-10-20 06:02:56,719 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:02:56,719 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:02:56,722 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:02:56,722 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:02:56,723 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-20 06:02:56,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-20 06:02:56,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:02:56,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 06:02:56,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:56,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:56,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:56,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:02:59,452 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 36) 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 (<= 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 (= (+ (* 8 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) (+ (* 16 ULTIMATE.start_main_~y~0) 64 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 7)) (< (+ ULTIMATE.start_main_~c~0 8) ULTIMATE.start_main_~k~0))) (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0)) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 6)) (= (+ (* 7 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) (+ 49 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 14 ULTIMATE.start_main_~y~0))) (< (+ ULTIMATE.start_main_~c~0 7) ULTIMATE.start_main_~k~0)))))) [2021-10-20 06:02:59,453 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-20 06:02:59,453 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 27 36) no Hoare annotation was computed. [2021-10-20 06:02:59,453 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-20 06:02:59,453 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-20 06:02:59,453 INFO L857 garLoopResultBuilder]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2021-10-20 06:02:59,453 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 06:02:59,453 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-20 06:02:59,454 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 06:02:59,454 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-20 06:02:59,454 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-20 06:02:59,454 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 30 31) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (and (<= 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 (= (+ (* 8 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) (+ (* 16 ULTIMATE.start_main_~y~0) 64 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 7)) (< (+ ULTIMATE.start_main_~c~0 8) ULTIMATE.start_main_~k~0))) (= (+ (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0)) (forall ((ULTIMATE.start_main_~k~0 Int)) (or (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~c~0 6)) (= (+ (* 7 ULTIMATE.start_main_~k~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~k~0)) (+ 49 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (* 14 ULTIMATE.start_main_~y~0))) (< (+ ULTIMATE.start_main_~c~0 7) ULTIMATE.start_main_~k~0))))) [2021-10-20 06:02:59,455 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-20 06:02:59,456 INFO L853 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: (= (+ (* 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) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0)) [2021-10-20 06:02:59,456 INFO L857 garLoopResultBuilder]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2021-10-20 06:02:59,456 INFO L853 garLoopResultBuilder]: At program point L10-8(lines 9 15) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 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) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 4 ULTIMATE.start_main_~x~0))) [2021-10-20 06:02:59,462 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:02:59,471 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,472 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,472 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,473 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,473 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,473 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,473 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,474 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,492 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,492 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,493 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,493 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,493 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,494 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,494 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,494 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,505 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,505 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,505 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,506 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,506 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,506 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,506 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,506 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,507 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,507 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,508 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,508 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,508 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,508 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,509 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,509 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:02:59 BoogieIcfgContainer [2021-10-20 06:02:59,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:02:59,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:02:59,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:02:59,511 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:02:59,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:01:16" (3/4) ... [2021-10-20 06:02:59,522 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:02:59,531 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-20 06:02:59,532 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-20 06:02:59,532 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-20 06:02:59,532 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:02:59,582 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:02:59,582 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:02:59,584 INFO L168 Benchmark]: Toolchain (without parser) took 103405.81 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 80.3 MB in the beginning and 91.6 MB in the end (delta: -11.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:59,584 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory was 88.1 MB in the beginning and 88.0 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:02:59,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.54 ms. Allocated memory is still 117.4 MB. Free memory was 80.0 MB in the beginning and 90.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:59,585 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.27 ms. Allocated memory is still 117.4 MB. Free memory was 90.8 MB in the beginning and 89.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:59,586 INFO L168 Benchmark]: Boogie Preprocessor took 23.83 ms. Allocated memory is still 117.4 MB. Free memory was 89.4 MB in the beginning and 88.6 MB in the end (delta: 844.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:02:59,586 INFO L168 Benchmark]: RCFGBuilder took 435.85 ms. Allocated memory is still 117.4 MB. Free memory was 88.0 MB in the beginning and 76.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:59,587 INFO L168 Benchmark]: TraceAbstraction took 102551.63 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 76.2 MB in the beginning and 93.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:59,587 INFO L168 Benchmark]: Witness Printer took 71.93 ms. Allocated memory is still 148.9 MB. Free memory was 93.7 MB in the beginning and 91.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-20 06:02:59,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 117.4 MB. Free memory was 88.1 MB in the beginning and 88.0 MB in the end (delta: 29.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.54 ms. Allocated memory is still 117.4 MB. Free memory was 80.0 MB in the beginning and 90.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.27 ms. Allocated memory is still 117.4 MB. Free memory was 90.8 MB in the beginning and 89.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.83 ms. Allocated memory is still 117.4 MB. Free memory was 89.4 MB in the beginning and 88.6 MB in the end (delta: 844.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 435.85 ms. Allocated memory is still 117.4 MB. Free memory was 88.0 MB in the beginning and 76.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 102551.63 ms. Allocated memory was 117.4 MB in the beginning and 148.9 MB in the end (delta: 31.5 MB). Free memory was 76.2 MB in the beginning and 93.7 MB in the end (delta: -17.5 MB). Peak memory consumption was 16.9 MB. Max. memory is 16.1 GB. * Witness Printer took 71.93 ms. Allocated memory is still 148.9 MB. Free memory was 93.7 MB in the beginning and 91.6 MB in the end (delta: 2.1 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: 102435.8ms, OverallIterations: 4, TraceHistogramMax: 9, EmptinessCheckTime: 12.9ms, AutomataDifference: 52502.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 2519.3ms, InitialAbstractionConstructionTime: 11.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 138 SDslu, 133 SDs, 0 SdLazy, 418 SolverSat, 81 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5633.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 106 SyntacticMatches, 8 SemanticMatches, 108 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 67392.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=3, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.5ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 28 NumberOfFragments, 233 HoareAnnotationTreeSize, 4 FomulaSimplifications, 166 FormulaSimplificationTreeSizeReduction, 54.7ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 1266 FormulaSimplificationTreeSizeReductionInter, 2456.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 29.3ms SsaConstructionTime, 1019.1ms SatisfiabilityAnalysisTime, 40298.8ms InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 120 ConstructedInterpolants, 30 QuantifiedInterpolants, 2174 SizeOfPredicates, 24 NumberOfNonLiveVariables, 378 ConjunctsInSsa, 96 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/282 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: 30]: Loop Invariant [2021-10-20 06:02:59,603 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,603 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,603 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,603 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,604 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,604 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,604 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,604 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,605 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,605 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,606 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,606 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,606 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,606 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,606 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,607 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] Derived loop invariant: (((1 <= cond && (y * k == y * y || c < k)) && (forall ULTIMATE.start_main_~k~0 : int :: (8 * ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0 == 16 * y + 64 + y * y || ULTIMATE.start_main_~k~0 <= c + 7) || c + 8 < ULTIMATE.start_main_~k~0)) && y * y * y * y + y * y + 2 * (y * y * y) == 4 * x) && (forall ULTIMATE.start_main_~k~0 : int :: (ULTIMATE.start_main_~k~0 <= c + 6 || 7 * ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0 == 49 + y * y + 14 * y) || c + 7 < ULTIMATE.start_main_~k~0) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 <= cond && y * y * y * y + y * y + 2 * (y * y * y) == 4 * x - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: y * y * y * y + y * y + 2 * (y * y * y) == 4 * x - InvariantResult [Line: 27]: Loop Invariant [2021-10-20 06:02:59,609 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,609 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,609 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,609 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,610 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,610 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,610 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,610 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,611 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,611 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,611 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,612 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,612 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,612 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,612 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~k~0,QUANTIFIED] [2021-10-20 06:02:59,613 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) || ((((1 <= cond && (y * k == y * y || c < k)) && (forall ULTIMATE.start_main_~k~0 : int :: (8 * ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0 == 16 * y + 64 + y * y || ULTIMATE.start_main_~k~0 <= c + 7) || c + 8 < ULTIMATE.start_main_~k~0)) && y * y * y * y + y * y + 2 * (y * y * y) == 4 * x) && (forall ULTIMATE.start_main_~k~0 : int :: (ULTIMATE.start_main_~k~0 <= c + 6 || 7 * ULTIMATE.start_main_~k~0 + y * ULTIMATE.start_main_~k~0 == 49 + y * y + 14 * y) || c + 7 < ULTIMATE.start_main_~k~0)) RESULT: Ultimate proved your program to be correct! [2021-10-20 06:02:59,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6269c335-9b31-4134-b3c5-505c1bca9f08/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...