./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8 --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 04018145d5ace4c3357fe1e5023a2cdd8af65b0f762a2636eda0df151f06b137 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:15:22,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:15:22,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:15:22,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:15:22,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:15:22,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:15:22,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:15:22,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:15:22,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:15:22,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:15:22,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:15:22,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:15:22,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:15:22,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:15:22,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:15:22,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:15:22,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:15:22,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:15:22,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:15:22,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:15:22,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:15:22,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:15:22,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:15:22,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:15:22,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:15:22,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:15:22,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:15:22,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:15:22,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:15:22,638 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:15:22,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:15:22,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:15:22,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:15:22,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:15:22,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:15:22,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:15:22,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:15:22,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:15:22,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:15:22,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:15:22,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:15:22,648 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:15:22,691 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:15:22,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:15:22,693 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:15:22,693 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:15:22,694 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:15:22,694 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:15:22,694 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:15:22,694 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:15:22,694 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:15:22,695 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:15:22,702 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:15:22,702 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:15:22,702 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:15:22,702 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:15:22,703 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:15:22,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:15:22,704 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:15:22,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:15:22,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:15:22,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:15:22,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:15:22,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:15:22,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:15:22,705 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:15:22,705 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:15:22,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:15:22,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:15:22,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:15:22,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:15:22,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:15:22,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:15:22,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:15:22,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:15:22,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:15:22,708 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:15:22,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:15:22,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:15:22,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:15:22,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:15:22,709 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_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04018145d5ace4c3357fe1e5023a2cdd8af65b0f762a2636eda0df151f06b137 [2021-11-07 02:15:22,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:15:22,994 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:15:22,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:15:22,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:15:22,999 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:15:23,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound100.c [2021-11-07 02:15:23,113 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/data/097b87b8a/f1ff92bdcb1d4301a25e07cf4d5658cb/FLAGa88e5d0d9 [2021-11-07 02:15:23,630 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:15:23,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound100.c [2021-11-07 02:15:23,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/data/097b87b8a/f1ff92bdcb1d4301a25e07cf4d5658cb/FLAGa88e5d0d9 [2021-11-07 02:15:24,009 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/data/097b87b8a/f1ff92bdcb1d4301a25e07cf4d5658cb [2021-11-07 02:15:24,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:15:24,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:15:24,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:24,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:15:24,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:15:24,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248372e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24, skipping insertion in model container [2021-11-07 02:15:24,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:15:24,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:15:24,212 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_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound100.c[524,537] [2021-11-07 02:15:24,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:15:24,238 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:15:24,252 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_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound100.c[524,537] [2021-11-07 02:15:24,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:15:24,275 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:15:24,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24 WrapperNode [2021-11-07 02:15:24,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:15:24,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:15:24,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:15:24,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:15:24,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:15:24,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:15:24,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:15:24,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:15:24,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,332 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:15:24,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:15:24,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:15:24,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:15:24,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (1/1) ... [2021-11-07 02:15:24,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:15:24,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:15:24,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:15:24,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:15:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:15:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:15:24,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:15:24,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:15:24,850 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:15:24,851 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-07 02:15:24,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:24 BoogieIcfgContainer [2021-11-07 02:15:24,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:15:24,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:15:24,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:15:24,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:15:24,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:15:24" (1/3) ... [2021-11-07 02:15:24,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b46805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:24, skipping insertion in model container [2021-11-07 02:15:24,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:15:24" (2/3) ... [2021-11-07 02:15:24,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b46805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:15:24, skipping insertion in model container [2021-11-07 02:15:24,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:24" (3/3) ... [2021-11-07 02:15:24,863 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound100.c [2021-11-07 02:15:24,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:15:24,869 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 02:15:24,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:15:24,926 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 [2021-11-07 02:15:24,927 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 02:15:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-11-07 02:15:24,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 02:15:24,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:24,947 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 02:15:24,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:15:24,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:24,954 INFO L85 PathProgramCache]: Analyzing trace with hash 3762700, now seen corresponding path program 1 times [2021-11-07 02:15:24,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:15:24,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656866894] [2021-11-07 02:15:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:24,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:15:25,047 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:15:25,048 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767644746] [2021-11-07 02:15:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:25,049 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:15:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:15:25,055 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:15:25,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 02:15:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:25,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:15:25,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:15:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:25,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:15:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:15:25,900 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:15:25,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656866894] [2021-11-07 02:15:25,900 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:15:25,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767644746] [2021-11-07 02:15:25,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767644746] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:15:25,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:15:25,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:15:25,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217693066] [2021-11-07 02:15:25,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:15:25,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:15:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:15:25,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:15:25,926 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-11-07 02:15:30,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:15:30,296 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-11-07 02:15:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:15:30,298 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 [2021-11-07 02:15:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:15:30,306 INFO L225 Difference]: With dead ends: 33 [2021-11-07 02:15:30,307 INFO L226 Difference]: Without dead ends: 18 [2021-11-07 02:15:30,310 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:15:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-07 02:15:30,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2021-11-07 02:15:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-11-07 02:15:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-07 02:15:30,341 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 4 [2021-11-07 02:15:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:15:30,342 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-07 02:15:30,342 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) [2021-11-07 02:15:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-07 02:15:30,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 02:15:30,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:15:30,344 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-07 02:15:30,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:15:30,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-07 02:15:30,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:15:30,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:15:30,557 INFO L85 PathProgramCache]: Analyzing trace with hash 431651566, now seen corresponding path program 1 times [2021-11-07 02:15:30,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:15:30,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487228996] [2021-11-07 02:15:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:30,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:15:30,582 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:15:30,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970536419] [2021-11-07 02:15:30,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:15:30,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:15:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:15:30,600 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:15:30,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 02:15:30,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:15:30,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 02:15:30,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:09,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:10,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:16:10,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487228996] [2021-11-07 02:16:10,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:16:10,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970536419] [2021-11-07 02:16:10,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970536419] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 02:16:10,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2026217067] [2021-11-07 02:16:10,924 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-07 02:16:10,925 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 02:16:10,932 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 02:16:10,953 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 02:16:10,954 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 02:16:11,016 INFO L180 QuantifierPusher]: treesize reduction 39, result has 84.3 percent of original size [2021-11-07 02:16:11,017 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:16:11,018 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,019 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 02:16:11,040 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:16:11,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,043 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-07 02:16:11,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-07 02:16:11,087 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_25|], 21=[|v_#valid_26|]} [2021-11-07 02:16:11,115 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:16:11,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,117 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:16:11,117 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:16:11,118 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-07 02:16:11,131 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:16:11,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,132 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:16:11,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,133 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:16:11,134 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-07 02:16:11,144 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:16:11,145 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,145 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:16:11,146 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,147 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:16:11,147 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-07 02:16:11,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,184 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 [2021-11-07 02:16:11,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:16:11,189 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,189 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-07 02:16:11,190 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-07 02:16:11,198 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-07 02:16:11,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:16:11,200 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-07 02:16:11,201 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-11-07 02:16:11,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,301 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 02:16:11,338 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 [2021-11-07 02:16:11,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:16:11,343 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,344 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-07 02:16:11,344 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-11-07 02:16:11,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,384 INFO L180 QuantifierPusher]: treesize reduction 4, result has 97.3 percent of original size [2021-11-07 02:16:11,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 146 [2021-11-07 02:16:11,395 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-07 02:16:11,395 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:880, output treesize:146 [2021-11-07 02:16:11,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-11-07 02:16:11,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 255 [2021-11-07 02:16:11,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,548 INFO L180 QuantifierPusher]: treesize reduction 38, result has 74.7 percent of original size [2021-11-07 02:16:11,550 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:16:11,551 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,555 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-07 02:16:11,556 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:16:11,557 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,561 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 02:16:11,566 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 02:16:11,570 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,575 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-11-07 02:16:11,588 INFO L180 QuantifierPusher]: treesize reduction 38, result has 74.7 percent of original size [2021-11-07 02:16:11,590 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:16:11,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,594 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-11-07 02:16:11,595 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 02:16:11,595 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 02:16:11,609 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 02:16:11,614 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 02:16:11,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:11,693 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 02:16:12,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:16:12,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 02:16:12,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-07 02:16:12,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374424261] [2021-11-07 02:16:12,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:16:12,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:16:12,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:16:12,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-07 02:16:12,253 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2021-11-07 02:16:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:22,107 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-07 02:16:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:16:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 7 [2021-11-07 02:16:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:22,109 INFO L225 Difference]: With dead ends: 24 [2021-11-07 02:16:22,109 INFO L226 Difference]: Without dead ends: 22 [2021-11-07 02:16:22,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=49, Invalid=132, Unknown=1, NotChecked=0, Total=182 [2021-11-07 02:16:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-07 02:16:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 8. [2021-11-07 02:16:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-11-07 02:16:22,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-07 02:16:22,116 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-11-07 02:16:22,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:22,116 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-07 02:16:22,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2021-11-07 02:16:22,117 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-07 02:16:22,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 02:16:22,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:16:22,118 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:16:22,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:22,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:16:22,319 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:16:22,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:16:22,319 INFO L85 PathProgramCache]: Analyzing trace with hash 430365587, now seen corresponding path program 1 times [2021-11-07 02:16:22,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:16:22,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666695780] [2021-11-07 02:16:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:22,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:16:22,326 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 02:16:22,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918071995] [2021-11-07 02:16:22,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:16:22,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:16:22,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:16:22,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 02:16:22,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 02:16:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:16:22,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 02:16:22,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:16:22,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:22,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:16:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:16:22,684 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 02:16:22,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666695780] [2021-11-07 02:16:22,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 02:16:22,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918071995] [2021-11-07 02:16:22,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918071995] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:16:22,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:16:22,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-07 02:16:22,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085263294] [2021-11-07 02:16:22,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:16:22,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 02:16:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:16:22,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:16:22,690 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:22,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:16:22,838 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-11-07 02:16:22,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:16:22,838 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 02:16:22,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:16:22,839 INFO L225 Difference]: With dead ends: 9 [2021-11-07 02:16:22,839 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 02:16:22,840 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 02:16:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 02:16:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 02:16:22,840 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) [2021-11-07 02:16:22,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 02:16:22,840 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-07 02:16:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:16:22,841 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 02:16:22,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:16:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 02:16:22,841 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 02:16:22,843 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:16:22,844 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:16:22,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:16:23,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 02:16:23,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 02:16:23,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:23,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:23,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 02:16:27,531 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 46) no Hoare annotation was computed. [2021-11-07 02:16:27,531 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 02:16:27,531 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 02:16:27,531 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 02:16:27,531 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-07 02:16:27,532 INFO L853 garLoopResultBuilder]: At program point L12-2(line 37) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0)))) [2021-11-07 02:16:27,532 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-11-07 02:16:27,532 INFO L860 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: true [2021-11-07 02:16:27,533 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 02:16:27,533 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-07 02:16:27,533 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-11-07 02:16:27,534 INFO L853 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (and (or (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (let ((.cse0 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (and (<= 0 .cse0) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (= ULTIMATE.start_main_~v~0 1) (<= .cse0 100)))) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0)))) [2021-11-07 02:16:27,537 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 02:16:27,538 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:16:27,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:16:27 BoogieIcfgContainer [2021-11-07 02:16:27,554 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:16:27,555 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:16:27,555 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:16:27,556 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:16:27,556 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:15:24" (3/4) ... [2021-11-07 02:16:27,560 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 02:16:27,571 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-07 02:16:27,571 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-07 02:16:27,571 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 02:16:27,572 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 02:16:27,611 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:16:27,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:16:27,612 INFO L168 Benchmark]: Toolchain (without parser) took 63598.47 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 58.7 MB in the beginning and 62.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:27,613 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 94.4 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 28.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:16:27,614 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.94 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 58.4 MB in the beginning and 92.7 MB in the end (delta: -34.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:27,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.98 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:27,615 INFO L168 Benchmark]: Boogie Preprocessor took 24.75 ms. Allocated memory is still 117.4 MB. Free memory was 91.0 MB in the beginning and 90.0 MB in the end (delta: 988.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:27,615 INFO L168 Benchmark]: RCFGBuilder took 512.71 ms. Allocated memory is still 117.4 MB. Free memory was 90.0 MB in the beginning and 72.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:27,616 INFO L168 Benchmark]: TraceAbstraction took 62698.90 ms. Allocated memory is still 117.4 MB. Free memory was 72.1 MB in the beginning and 65.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:27,617 INFO L168 Benchmark]: Witness Printer took 55.88 ms. Allocated memory is still 117.4 MB. Free memory was 65.6 MB in the beginning and 62.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 02:16:27,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 94.4 MB. Free memory was 63.6 MB in the beginning and 63.6 MB in the end (delta: 28.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.94 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 58.4 MB in the beginning and 92.7 MB in the end (delta: -34.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.98 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.75 ms. Allocated memory is still 117.4 MB. Free memory was 91.0 MB in the beginning and 90.0 MB in the end (delta: 988.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 512.71 ms. Allocated memory is still 117.4 MB. Free memory was 90.0 MB in the beginning and 72.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 62698.90 ms. Allocated memory is still 117.4 MB. Free memory was 72.1 MB in the beginning and 65.6 MB in the end (delta: 6.5 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Witness Printer took 55.88 ms. Allocated memory is still 117.4 MB. Free memory was 65.6 MB in the beginning and 62.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 62.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 42 SDslu, 30 SDs, 0 SdLazy, 76 SolverSat, 29 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 11.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 18, 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, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 81 HoareAnnotationTreeSize, 3 FomulaSimplifications, 612 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 71 FormulaSimplificationTreeSizeReductionInter, 4.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 41.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 1 QuantifiedInterpolants, 601 SizeOfPredicates, 25 NumberOfNonLiveVariables, 182 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 1/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (1 <= cond || (((0 <= (u * -1 + 1) / -2 && (u + 1) % -2 == 0) && v == 1) && (u * -1 + 1) / -2 <= 100)) && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-07 02:16:27,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a39a6c6-5903-4f4a-afb1-5d49ecb15220/bin/utaipan-UUZaoUuFF8/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