./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/fermat1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/fermat1-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:33:21,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:33:21,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:33:21,145 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:33:21,145 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:33:21,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:33:21,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:33:21,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:33:21,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:33:21,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:33:21,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:33:21,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:33:21,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:33:21,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:33:21,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:33:21,187 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:33:21,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:33:21,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:33:21,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:33:21,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:33:21,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:33:21,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:33:21,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:33:21,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:33:21,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:33:21,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:33:21,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:33:21,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:33:21,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:33:21,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:33:21,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:33:21,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:33:21,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:33:21,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:33:21,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:33:21,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:33:21,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:33:21,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:33:21,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:33:21,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:33:21,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:33:21,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:33:21,242 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:33:21,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:33:21,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:33:21,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:33:21,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:33:21,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:33:21,245 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:33:21,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:33:21,245 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:33:21,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:33:21,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:33:21,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:33:21,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:33:21,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:33:21,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:33:21,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:33:21,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:33:21,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:33:21,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:33:21,248 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:33:21,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:33:21,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:33:21,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:33:21,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:33:21,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:33:21,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:33:21,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:33:21,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:33:21,250 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:33:21,250 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:33:21,250 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:33:21,250 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:33:21,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5787d4099664297951b30a30ca371dd536df07843738ed8698fe723430a974c [2021-11-22 15:33:21,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:33:21,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:33:21,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:33:21,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:33:21,573 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:33:21,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench/fermat1-ll.c [2021-11-22 15:33:21,652 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/data/8789b1aef/87cc20adaac149f08c5ab930fd010b4f/FLAGeb93060a0 [2021-11-22 15:33:22,197 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:33:22,198 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/sv-benchmarks/c/nla-digbench/fermat1-ll.c [2021-11-22 15:33:22,213 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/data/8789b1aef/87cc20adaac149f08c5ab930fd010b4f/FLAGeb93060a0 [2021-11-22 15:33:22,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/data/8789b1aef/87cc20adaac149f08c5ab930fd010b4f [2021-11-22 15:33:22,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:33:22,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:33:22,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:33:22,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:33:22,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:33:22,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f047077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22, skipping insertion in model container [2021-11-22 15:33:22,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:33:22,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:33:22,758 WARN L230 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_d06b5a62-be45-4898-912a-009669ab543e/sv-benchmarks/c/nla-digbench/fermat1-ll.c[535,548] [2021-11-22 15:33:22,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:33:22,784 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:33:22,797 WARN L230 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_d06b5a62-be45-4898-912a-009669ab543e/sv-benchmarks/c/nla-digbench/fermat1-ll.c[535,548] [2021-11-22 15:33:22,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:33:22,820 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:33:22,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22 WrapperNode [2021-11-22 15:33:22,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:33:22,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:33:22,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:33:22,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:33:22,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,857 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 80 [2021-11-22 15:33:22,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:33:22,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:33:22,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:33:22,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:33:22,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:33:22,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:33:22,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:33:22,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:33:22,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (1/1) ... [2021-11-22 15:33:22,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:33:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:33:22,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:33:22,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:33:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:33:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:33:22,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:33:22,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:33:23,028 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:33:23,030 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:33:23,189 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:33:23,196 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:33:23,197 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-22 15:33:23,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:33:23 BoogieIcfgContainer [2021-11-22 15:33:23,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:33:23,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:33:23,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:33:23,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:33:23,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:33:22" (1/3) ... [2021-11-22 15:33:23,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff9892d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:33:23, skipping insertion in model container [2021-11-22 15:33:23,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:22" (2/3) ... [2021-11-22 15:33:23,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff9892d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:33:23, skipping insertion in model container [2021-11-22 15:33:23,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:33:23" (3/3) ... [2021-11-22 15:33:23,227 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll.c [2021-11-22 15:33:23,232 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:33:23,232 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-22 15:33:23,323 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:33:23,336 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=PETRI_NET, 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 [2021-11-22 15:33:23,336 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-22 15:33:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 31 states have internal predecessors, (46), 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) [2021-11-22 15:33:23,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:33:23,376 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:23,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:23,378 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:23,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:23,383 INFO L85 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-11-22 15:33:23,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:23,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549921456] [2021-11-22 15:33:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:23,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:23,519 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:33:23,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494566713] [2021-11-22 15:33:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:23,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:33:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:33:23,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:33:23,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:33:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:23,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 15:33:23,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:33:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:23,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:33:23,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:23,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549921456] [2021-11-22 15:33:23,662 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:33:23,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494566713] [2021-11-22 15:33:23,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494566713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:23,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:23,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:33:23,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369503073] [2021-11-22 15:33:23,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:23,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:33:23,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:23,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:33:23,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:33:23,701 INFO L87 Difference]: Start difference. First operand has 32 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 31 states have internal predecessors, (46), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-22 15:33:23,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:23,718 INFO L93 Difference]: Finished difference Result 61 states and 88 transitions. [2021-11-22 15:33:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:33:23,720 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-22 15:33:23,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:23,728 INFO L225 Difference]: With dead ends: 61 [2021-11-22 15:33:23,728 INFO L226 Difference]: Without dead ends: 28 [2021-11-22 15:33:23,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:33:23,735 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:23,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:33:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-22 15:33:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-22 15:33:23,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.25) internal successors, (30), 27 states have internal predecessors, (30), 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) [2021-11-22 15:33:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-11-22 15:33:23,770 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 9 [2021-11-22 15:33:23,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:23,770 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-11-22 15:33:23,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-11-22 15:33:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-11-22 15:33:23,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:33:23,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:23,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:23,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:33:23,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-22 15:33:23,992 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-11-22 15:33:23,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:23,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732539785] [2021-11-22 15:33:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:23,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:24,007 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:33:24,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670269101] [2021-11-22 15:33:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:24,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:33:24,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:33:24,009 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:33:24,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:33:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:24,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:33:24,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:33:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:24,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:33:24,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:24,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732539785] [2021-11-22 15:33:24,261 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:33:24,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670269101] [2021-11-22 15:33:24,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670269101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:24,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:24,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:33:24,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166086511] [2021-11-22 15:33:24,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:24,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:33:24,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:24,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:33:24,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:33:24,264 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-22 15:33:26,376 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:33:27,728 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:33:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:27,805 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2021-11-22 15:33:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:33:27,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2021-11-22 15:33:27,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:27,807 INFO L225 Difference]: With dead ends: 52 [2021-11-22 15:33:27,807 INFO L226 Difference]: Without dead ends: 46 [2021-11-22 15:33:27,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:27,809 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 23 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:27,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 53 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-22 15:33:27,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-22 15:33:27,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-11-22 15:33:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.25) internal successors, (45), 39 states have internal predecessors, (45), 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) [2021-11-22 15:33:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2021-11-22 15:33:27,818 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 9 [2021-11-22 15:33:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:27,819 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2021-11-22 15:33:27,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2021-11-22 15:33:27,819 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2021-11-22 15:33:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:33:27,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:27,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:27,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:33:28,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:33:28,020 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1732111244, now seen corresponding path program 1 times [2021-11-22 15:33:28,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:28,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667871061] [2021-11-22 15:33:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:28,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:28,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:33:28,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44469820] [2021-11-22 15:33:28,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:28,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:33:28,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:33:28,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:33:28,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:33:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:28,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:33:28,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:33:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:28,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:33:28,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:28,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667871061] [2021-11-22 15:33:28,272 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:33:28,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44469820] [2021-11-22 15:33:28,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44469820] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:28,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:28,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:33:28,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552389870] [2021-11-22 15:33:28,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:28,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:33:28,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:28,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:33:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:33:28,275 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:28,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:28,429 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-11-22 15:33:28,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:33:28,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:33:28,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:28,430 INFO L225 Difference]: With dead ends: 41 [2021-11-22 15:33:28,431 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 15:33:28,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:33:28,440 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:28,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 27 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:33:28,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 15:33:28,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 15:33:28,450 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) [2021-11-22 15:33:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 15:33:28,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-22 15:33:28,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:28,452 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:33:28,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 15:33:28,455 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 15:33:28,457 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-22 15:33:28,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2021-11-22 15:33:28,458 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2021-11-22 15:33:28,459 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2021-11-22 15:33:28,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:33:28,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:33:28,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-22 15:33:33,929 WARN L227 SmtUtils]: Spent 5.19s on a formula simplification. DAG size of input: 37 DAG size of output: 29 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-22 15:33:33,976 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 15:33:33,976 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-22 15:33:33,976 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-22 15:33:33,976 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-22 15:33:33,977 INFO L854 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)))) [2021-11-22 15:33:33,977 INFO L858 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-11-22 15:33:33,977 INFO L854 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)))) [2021-11-22 15:33:33,977 INFO L858 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-11-22 15:33:33,977 INFO L854 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)))) [2021-11-22 15:33:33,977 INFO L858 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-11-22 15:33:33,978 INFO L861 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: true [2021-11-22 15:33:33,978 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 15:33:33,978 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-22 15:33:33,978 INFO L858 garLoopResultBuilder]: For program point L46-1(lines 33 53) no Hoare annotation was computed. [2021-11-22 15:33:33,978 INFO L858 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-11-22 15:33:33,978 INFO L854 garLoopResultBuilder]: At program point L46-2(lines 33 53) the Hoare annotation is: (let ((.cse0 (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))))) (or (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) .cse0) (and (= |ULTIMATE.start_main_~v~0#1| 1) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|) (let ((.cse1 (div (+ (- 1) |ULTIMATE.start_main_~u~0#1|) 2))) (* .cse1 .cse1))) .cse0))) [2021-11-22 15:33:33,979 INFO L858 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-11-22 15:33:33,979 INFO L858 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-11-22 15:33:33,979 INFO L854 garLoopResultBuilder]: At program point L38-2(lines 38 44) the Hoare annotation is: (and (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 1) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)))) [2021-11-22 15:33:33,979 INFO L861 garLoopResultBuilder]: At program point L56(lines 19 57) the Hoare annotation is: true [2021-11-22 15:33:33,979 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 49) no Hoare annotation was computed. [2021-11-22 15:33:33,979 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-11-22 15:33:33,979 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-22 15:33:33,980 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 15:33:33,980 INFO L858 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-11-22 15:33:33,980 INFO L858 garLoopResultBuilder]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2021-11-22 15:33:33,980 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-22 15:33:33,980 INFO L858 garLoopResultBuilder]: For program point L33-2(lines 33 53) no Hoare annotation was computed. [2021-11-22 15:33:33,980 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-11-22 15:33:33,980 INFO L858 garLoopResultBuilder]: For program point L9-2(line 9) no Hoare annotation was computed. [2021-11-22 15:33:33,980 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-22 15:33:33,981 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 36) no Hoare annotation was computed. [2021-11-22 15:33:33,984 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-22 15:33:33,986 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:33:34,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:33:34 BoogieIcfgContainer [2021-11-22 15:33:34,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:33:34,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:33:34,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:33:34,004 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:33:34,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:33:23" (3/4) ... [2021-11-22 15:33:34,008 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 15:33:34,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-11-22 15:33:34,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 15:33:34,019 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 15:33:34,020 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 15:33:34,058 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:33:34,058 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:33:34,059 INFO L158 Benchmark]: Toolchain (without parser) took 11512.36ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 55.0MB in the end (delta: 26.2MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2021-11-22 15:33:34,059 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 89.4MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:33:34,060 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.10ms. Allocated memory is still 115.3MB. Free memory was 81.0MB in the beginning and 91.0MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:33:34,060 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.78ms. Allocated memory is still 115.3MB. Free memory was 90.4MB in the beginning and 89.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:33:34,061 INFO L158 Benchmark]: Boogie Preprocessor took 23.83ms. Allocated memory is still 115.3MB. Free memory was 89.3MB in the beginning and 87.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:33:34,061 INFO L158 Benchmark]: RCFGBuilder took 316.07ms. Allocated memory is still 115.3MB. Free memory was 87.8MB in the beginning and 77.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 15:33:34,061 INFO L158 Benchmark]: TraceAbstraction took 10782.86ms. Allocated memory is still 115.3MB. Free memory was 76.4MB in the beginning and 58.4MB in the end (delta: 18.0MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2021-11-22 15:33:34,062 INFO L158 Benchmark]: Witness Printer took 54.51ms. Allocated memory is still 115.3MB. Free memory was 58.4MB in the beginning and 55.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:33:34,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 115.3MB. Free memory was 89.4MB in the beginning and 89.4MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.10ms. Allocated memory is still 115.3MB. Free memory was 81.0MB in the beginning and 91.0MB in the end (delta: -10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.78ms. Allocated memory is still 115.3MB. Free memory was 90.4MB in the beginning and 89.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.83ms. Allocated memory is still 115.3MB. Free memory was 89.3MB in the beginning and 87.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.07ms. Allocated memory is still 115.3MB. Free memory was 87.8MB in the beginning and 77.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 10782.86ms. Allocated memory is still 115.3MB. Free memory was 76.4MB in the beginning and 58.4MB in the end (delta: 18.0MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * Witness Printer took 54.51ms. Allocated memory is still 115.3MB. Free memory was 58.4MB in the beginning and 55.0MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 10.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.3s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 60 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 20 NumberOfFragments, 168 HoareAnnotationTreeSize, 7 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 323 FormulaSimplificationTreeSizeReductionInter, 5.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 165 SizeOfPredicates, 13 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 4 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: cond == 1 && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: cond == 1 && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (cond == 1 && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u) || ((v == 1 && A + r == (-1 + u) / 2 * ((-1 + u) / 2)) && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: cond == 1 && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: cond == 1 && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u RESULT: Ultimate proved your program to be correct! [2021-11-22 15:33:34,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d06b5a62-be45-4898-912a-009669ab543e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE