./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash baeebe831189d0208212eeaf417b83dac95cdcd24131565645f78fcbd5cf583c ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:15:31,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:15:31,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:15:31,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:15:31,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:15:31,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:15:31,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:15:32,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:15:32,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:15:32,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:15:32,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:15:32,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:15:32,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:15:32,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:15:32,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:15:32,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:15:32,032 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:15:32,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:15:32,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:15:32,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:15:32,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:15:32,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:15:32,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:15:32,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:15:32,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:15:32,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:15:32,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:15:32,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:15:32,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:15:32,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:15:32,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:15:32,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:15:32,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:15:32,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:15:32,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:15:32,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:15:32,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:15:32,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:15:32,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:15:32,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:15:32,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:15:32,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:15:32,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:15:32,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:15:32,131 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:15:32,131 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:15:32,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:15:32,131 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:15:32,132 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:15:32,132 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:15:32,132 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:15:32,132 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:15:32,134 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:15:32,134 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:15:32,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:15:32,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:15:32,135 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:15:32,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:15:32,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:15:32,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:15:32,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:15:32,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:15:32,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:15:32,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:15:32,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:15:32,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:15:32,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:15:32,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:15:32,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:15:32,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:15:32,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:15:32,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:15:32,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:15:32,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:15:32,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:15:32,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:15:32,142 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:15:32,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:15:32,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:15:32,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:15:32,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:15:32,143 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_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> baeebe831189d0208212eeaf417b83dac95cdcd24131565645f78fcbd5cf583c [2021-10-24 10:15:32,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:15:32,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:15:32,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:15:32,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:15:32,484 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:15:32,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c [2021-10-24 10:15:32,568 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/data/a52815580/40efb454abbe4a3686b659e14d3a7eff/FLAG8c20beb15 [2021-10-24 10:15:33,041 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:15:33,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c [2021-10-24 10:15:33,056 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/data/a52815580/40efb454abbe4a3686b659e14d3a7eff/FLAG8c20beb15 [2021-10-24 10:15:33,424 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/data/a52815580/40efb454abbe4a3686b659e14d3a7eff [2021-10-24 10:15:33,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:15:33,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:15:33,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:15:33,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:15:33,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:15:33,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@469f7c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33, skipping insertion in model container [2021-10-24 10:15:33,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:15:33,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:15:33,657 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_1ecc46dd-58de-421b-bad1-15ad082d3f08/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c[458,471] [2021-10-24 10:15:33,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:15:33,694 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:15:33,717 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_1ecc46dd-58de-421b-bad1-15ad082d3f08/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_unwindbound100.c[458,471] [2021-10-24 10:15:33,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:15:33,755 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:15:33,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33 WrapperNode [2021-10-24 10:15:33,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:15:33,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:15:33,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:15:33,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:15:33,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,796 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:15:33,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:15:33,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:15:33,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:15:33,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:15:33,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:15:33,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:15:33,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:15:33,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (1/1) ... [2021-10-24 10:15:33,855 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:15:33,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:15:33,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:15:33,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:15:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:15:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:15:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:15:33,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:15:34,159 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:15:34,159 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-24 10:15:34,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:15:34 BoogieIcfgContainer [2021-10-24 10:15:34,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:15:34,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:15:34,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:15:34,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:15:34,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:15:33" (1/3) ... [2021-10-24 10:15:34,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1924ca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:15:34, skipping insertion in model container [2021-10-24 10:15:34,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:15:33" (2/3) ... [2021-10-24 10:15:34,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1924ca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:15:34, skipping insertion in model container [2021-10-24 10:15:34,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:15:34" (3/3) ... [2021-10-24 10:15:34,171 INFO L111 eAbstractionObserver]: Analyzing ICFG ps3-ll_unwindbound100.c [2021-10-24 10:15:34,177 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:15:34,178 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 10:15:34,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:15:34,236 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:15:34,236 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 10:15:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:15:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:15:34,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:34,257 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:15:34,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:15:34,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:34,263 INFO L82 PathProgramCache]: Analyzing trace with hash 72255189, now seen corresponding path program 1 times [2021-10-24 10:15:34,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:15:34,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194021765] [2021-10-24 10:15:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:34,275 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:15:34,398 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:15:34,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732885103] [2021-10-24 10:15:34,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:34,402 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:15:34,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:15:34,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:15:34,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:15:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:34,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 10:15:34,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:15:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:34,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:15:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:34,831 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:15:34,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194021765] [2021-10-24 10:15:34,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:15:34,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732885103] [2021-10-24 10:15:34,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732885103] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:15:34,833 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:15:34,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:15:34,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423034486] [2021-10-24 10:15:34,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:15:34,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:15:34,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:15:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:15:34,860 INFO L87 Difference]: Start difference. First operand has 13 states, 10 states have (on average 1.7) internal successors, (17), 12 states have internal predecessors, (17), 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 1.6) internal successors, (8), 4 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) [2021-10-24 10:15:45,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:45,725 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2021-10-24 10:15:45,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:15:45,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) Word has length 5 [2021-10-24 10:15:45,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:45,735 INFO L225 Difference]: With dead ends: 45 [2021-10-24 10:15:45,735 INFO L226 Difference]: Without dead ends: 22 [2021-10-24 10:15:45,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:15:45,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-10-24 10:15:45,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2021-10-24 10:15:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:15:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-10-24 10:15:45,775 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2021-10-24 10:15:45,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:45,775 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-10-24 10:15:45,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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) [2021-10-24 10:15:45,776 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-10-24 10:15:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-24 10:15:45,777 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:15:45,777 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2021-10-24 10:15:45,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:15:45,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:15:45,998 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:15:45,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:15:45,999 INFO L82 PathProgramCache]: Analyzing trace with hash 185086765, now seen corresponding path program 1 times [2021-10-24 10:15:45,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:15:46,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262793659] [2021-10-24 10:15:46,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:46,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:15:46,025 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:15:46,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574058791] [2021-10-24 10:15:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:15:46,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:15:46,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:15:46,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:15:46,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:15:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:15:46,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-24 10:15:46,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:15:46,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:15:46,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:15:46,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-24 10:15:46,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:15:46,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262793659] [2021-10-24 10:15:46,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:15:46,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574058791] [2021-10-24 10:15:46,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574058791] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 10:15:46,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [518655570] [2021-10-24 10:15:46,661 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-24 10:15:46,664 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 10:15:46,670 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 10:15:46,678 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 10:15:46,680 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 10:15:46,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,744 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:15:46,745 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,745 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-24 10:15:46,750 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:15:46,752 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-24 10:15:46,757 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-24 10:15:46,790 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-10-24 10:15:46,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-24 10:15:46,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,825 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:15:46,826 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,826 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-24 10:15:46,827 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-24 10:15:46,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:46,881 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-24 10:15:46,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-10-24 10:15:46,924 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:15:46,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-10-24 10:15:46,936 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-24 10:15:46,937 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:46,984 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:46,990 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 111 [2021-10-24 10:15:46,990 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-24 10:15:46,991 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:136, output treesize:111 [2021-10-24 10:15:46,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 116 [2021-10-24 10:15:47,030 INFO L180 QuantifierPusher]: treesize reduction 19, result has 89.6 percent of original size [2021-10-24 10:15:47,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-10-24 10:15:47,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-24 10:15:47,080 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-10-24 10:15:47,094 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,146 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,308 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-24 10:15:47,334 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-10-24 10:15:47,366 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 348 [2021-10-24 10:15:47,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,403 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 415 [2021-10-24 10:15:47,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 420 [2021-10-24 10:15:47,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,541 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,595 INFO L180 QuantifierPusher]: treesize reduction 46, result has 68.9 percent of original size [2021-10-24 10:15:47,600 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 10:15:47,608 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,613 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-10-24 10:15:47,617 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,622 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 147 [2021-10-24 10:15:47,633 INFO L180 QuantifierPusher]: treesize reduction 46, result has 68.9 percent of original size [2021-10-24 10:15:47,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-24 10:15:47,647 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 10:15:47,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 142 [2021-10-24 10:15:47,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:47,706 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 10:15:48,377 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:15:48,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-24 10:15:48,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-10-24 10:15:48,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524220253] [2021-10-24 10:15:48,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-24 10:15:48,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:15:48,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-24 10:15:48,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-24 10:15:48,381 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:15:48,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:15:48,697 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-10-24 10:15:48,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 10:15:48,698 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-24 10:15:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:15:48,698 INFO L225 Difference]: With dead ends: 25 [2021-10-24 10:15:48,698 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:15:48,700 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 793.8ms TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-10-24 10:15:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:15:48,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:15:48,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:15:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:15:48,701 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-24 10:15:48,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:15:48,701 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:15:48,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:15:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:15:48,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:15:48,704 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:15:48,704 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:15:48,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-24 10:15:48,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-24 10:15:48,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:15:48,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:48,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:48,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:15:48,966 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:15:48,966 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 36) no Hoare annotation was computed. [2021-10-24 10:15:48,966 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-24 10:15:48,967 INFO L853 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~y~0 0) (= ULTIMATE.start_main_~x~0 0)) (and (= (+ ULTIMATE.start_main_~y~0 (* 3 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 6 ULTIMATE.start_main_~x~0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-24 10:15:48,967 INFO L857 garLoopResultBuilder]: For program point L27-4(lines 27 36) no Hoare annotation was computed. [2021-10-24 10:15:48,967 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-10-24 10:15:48,967 INFO L857 garLoopResultBuilder]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2021-10-24 10:15:48,967 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:15:48,967 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-24 10:15:48,968 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-10-24 10:15:48,968 INFO L853 garLoopResultBuilder]: At program point L10-2(lines 30 31) the Hoare annotation is: (and (= (+ ULTIMATE.start_main_~y~0 (* 3 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (* 2 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (* 6 ULTIMATE.start_main_~x~0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-24 10:15:48,968 INFO L857 garLoopResultBuilder]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2021-10-24 10:15:48,968 INFO L860 garLoopResultBuilder]: At program point L10-5(lines 9 15) the Hoare annotation is: true [2021-10-24 10:15:48,972 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:15:48,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:15:48 BoogieIcfgContainer [2021-10-24 10:15:48,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:15:48,987 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:15:48,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:15:48,987 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:15:48,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:15:34" (3/4) ... [2021-10-24 10:15:48,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:15:48,999 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-24 10:15:48,999 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:15:49,000 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:15:49,000 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:15:49,051 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:15:49,051 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:15:49,052 INFO L168 Benchmark]: Toolchain (without parser) took 15621.52 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 74.8 MB in the beginning and 53.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:49,052 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:15:49,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.42 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 74.8 MB in the beginning and 100.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:49,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.34 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 98.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:49,054 INFO L168 Benchmark]: Boogie Preprocessor took 47.19 ms. Allocated memory is still 125.8 MB. Free memory was 98.4 MB in the beginning and 97.8 MB in the end (delta: 593.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:15:49,054 INFO L168 Benchmark]: RCFGBuilder took 317.15 ms. Allocated memory is still 125.8 MB. Free memory was 97.3 MB in the beginning and 86.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:49,054 INFO L168 Benchmark]: TraceAbstraction took 14822.27 ms. Allocated memory is still 125.8 MB. Free memory was 86.4 MB in the beginning and 55.2 MB in the end (delta: 31.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:49,055 INFO L168 Benchmark]: Witness Printer took 64.51 ms. Allocated memory is still 125.8 MB. Free memory was 55.2 MB in the beginning and 53.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:15:49,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 104.9 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.42 ms. Allocated memory was 104.9 MB in the beginning and 125.8 MB in the end (delta: 21.0 MB). Free memory was 74.8 MB in the beginning and 100.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.34 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 98.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.19 ms. Allocated memory is still 125.8 MB. Free memory was 98.4 MB in the beginning and 97.8 MB in the end (delta: 593.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 317.15 ms. Allocated memory is still 125.8 MB. Free memory was 97.3 MB in the beginning and 86.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14822.27 ms. Allocated memory is still 125.8 MB. Free memory was 86.4 MB in the beginning and 55.2 MB in the end (delta: 31.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 16.1 GB. * Witness Printer took 64.51 ms. Allocated memory is still 125.8 MB. Free memory was 55.2 MB in the beginning and 53.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 14745.2ms, OverallIterations: 2, TraceHistogramMax: 3, EmptinessCheckTime: 9.5ms, AutomataDifference: 11216.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 56.9ms, InitialAbstractionConstructionTime: 10.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 17 SDtfs, 61 SDslu, 40 SDs, 0 SdLazy, 63 SolverSat, 31 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 11041.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 854.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 51 HoareAnnotationTreeSize, 3 FomulaSimplifications, 61 FormulaSimplificationTreeSizeReduction, 7.3ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 39 FormulaSimplificationTreeSizeReductionInter, 43.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 16.1ms SsaConstructionTime, 98.9ms SatisfiabilityAnalysisTime, 815.3ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 231 SizeOfPredicates, 8 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 9/20 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: 30]: Loop Invariant Derived loop invariant: y + 3 * (y * y) + 2 * (y * y * y) == 6 * x && 1 <= cond - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (y == 0 && x == 0) || (y + 3 * (y * y) + 2 * (y * y * y) == 6 * x && 1 <= cond) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-24 10:15:49,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ecc46dd-58de-421b-bad1-15ad082d3f08/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...