./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI --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 47ea6740abb52526626597c1b9d05146c745bc7f ................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:29:34,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:29:34,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:29:34,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:29:34,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:29:34,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:29:34,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:29:34,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:29:34,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:29:34,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:29:34,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:29:34,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:29:34,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:29:34,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:29:34,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:29:34,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:29:34,125 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:29:34,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:29:34,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:29:34,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:29:34,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:29:34,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:29:34,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:29:34,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:29:34,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:29:34,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:29:34,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:29:34,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:29:34,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:29:34,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:29:34,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:29:34,157 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:29:34,158 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:29:34,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:29:34,160 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:29:34,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:29:34,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:29:34,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:29:34,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:29:34,162 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:29:34,163 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:29:34,164 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:29:34,212 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:29:34,212 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:29:34,213 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:29:34,214 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:29:34,214 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:29:34,214 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:29:34,214 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:29:34,214 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:29:34,220 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:29:34,221 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:29:34,221 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:29:34,221 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:29:34,222 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:29:34,222 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:29:34,222 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:29:34,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:29:34,223 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:29:34,223 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:29:34,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:29:34,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:29:34,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:29:34,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:29:34,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:29:34,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:29:34,225 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:29:34,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:29:34,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:29:34,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:29:34,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:29:34,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:29:34,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:34,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:29:34,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:29:34,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:29:34,227 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:29:34,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:29:34,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:29:34,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:29:34,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:29:34,228 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_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ea6740abb52526626597c1b9d05146c745bc7f [2021-10-11 02:29:34,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:29:34,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:29:34,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:29:34,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:29:34,528 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:29:34,529 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c [2021-10-11 02:29:34,615 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/data/787b02a12/639bc41a49884f5cb311d65ba70be1c9/FLAG89a15dfea [2021-10-11 02:29:35,071 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:29:35,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c [2021-10-11 02:29:35,077 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/data/787b02a12/639bc41a49884f5cb311d65ba70be1c9/FLAG89a15dfea [2021-10-11 02:29:35,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/data/787b02a12/639bc41a49884f5cb311d65ba70be1c9 [2021-10-11 02:29:35,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:29:35,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:29:35,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:35,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:29:35,471 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:29:35,472 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c53b7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35, skipping insertion in model container [2021-10-11 02:29:35,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:29:35,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:29:35,681 WARN L226 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_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c[555,568] [2021-10-11 02:29:35,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:35,701 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:29:35,713 WARN L226 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_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c[555,568] [2021-10-11 02:29:35,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:29:35,733 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:29:35,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35 WrapperNode [2021-10-11 02:29:35,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:29:35,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:35,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:29:35,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:29:35,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:29:35,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:29:35,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:29:35,768 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:29:35,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... [2021-10-11 02:29:35,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:29:35,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:29:35,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:29:35,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:29:35,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:29:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:29:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:29:35,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:29:35,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:29:36,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:29:36,238 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 02:29:36,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:36 BoogieIcfgContainer [2021-10-11 02:29:36,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:29:36,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:29:36,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:29:36,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:29:36,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:29:35" (1/3) ... [2021-10-11 02:29:36,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d121fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:36, skipping insertion in model container [2021-10-11 02:29:36,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:29:35" (2/3) ... [2021-10-11 02:29:36,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d121fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:29:36, skipping insertion in model container [2021-10-11 02:29:36,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:36" (3/3) ... [2021-10-11 02:29:36,249 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound1.c [2021-10-11 02:29:36,275 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:29:36,285 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:29:36,297 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:29:36,333 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:29:36,333 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:29:36,334 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:29:36,334 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:29:36,334 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:29:36,334 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:29:36,335 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:29:36,335 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:29:36,349 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 02:29:36,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:29:36,355 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:36,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:29:36,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:36,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:36,362 INFO L82 PathProgramCache]: Analyzing trace with hash 2974232, now seen corresponding path program 1 times [2021-10-11 02:29:36,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:36,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392216330] [2021-10-11 02:29:36,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:36,491 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:36,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841788383] [2021-10-11 02:29:36,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:29:36,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-11 02:29:36,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:29:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:36,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:29:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:29:36,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392216330] [2021-10-11 02:29:36,787 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:29:36,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841788383] [2021-10-11 02:29:36,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:29:36,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:29:36,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800839702] [2021-10-11 02:29:36,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:29:36,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:29:36,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:29:36,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:29:36,814 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 6 states. [2021-10-11 02:29:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:29:36,939 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2021-10-11 02:29:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:29:36,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2021-10-11 02:29:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:29:36,948 INFO L225 Difference]: With dead ends: 25 [2021-10-11 02:29:36,948 INFO L226 Difference]: Without dead ends: 12 [2021-10-11 02:29:36,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:29:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-11 02:29:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2021-10-11 02:29:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-11 02:29:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-11 02:29:36,981 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-10-11 02:29:36,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:29:36,981 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-11 02:29:36,981 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:29:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-11 02:29:36,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:29:36,982 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:29:36,982 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:29:37,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:29:37,198 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:29:37,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:29:37,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1584067981, now seen corresponding path program 1 times [2021-10-11 02:29:37,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:29:37,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473869178] [2021-10-11 02:29:37,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:29:37,242 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:29:37,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [920126666] [2021-10-11 02:29:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:37,303 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:29:37,320 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:29:37,352 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:29:37,352 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:29:37,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:29:37,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:29:37 BoogieIcfgContainer [2021-10-11 02:29:37,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:29:37,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:29:37,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:29:37,582 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:29:37,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:29:36" (3/4) ... [2021-10-11 02:29:37,585 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:29:37,624 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5db71df3-bc59-4cb0-b6f6-f2b4fdf6c150/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:29:37,624 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:29:37,625 INFO L168 Benchmark]: Toolchain (without parser) took 2173.16 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 53.9 MB in the beginning and 87.9 MB in the end (delta: -34.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:37,626 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory was 60.3 MB in the beginning and 60.3 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:37,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.59 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 53.7 MB in the beginning and 97.2 MB in the end (delta: -43.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:37,628 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.63 ms. Allocated memory is still 121.6 MB. Free memory was 97.2 MB in the beginning and 96.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:37,628 INFO L168 Benchmark]: Boogie Preprocessor took 20.43 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 95.1 MB in the end (delta: 855.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:37,629 INFO L168 Benchmark]: RCFGBuilder took 451.82 ms. Allocated memory is still 121.6 MB. Free memory was 95.1 MB in the beginning and 76.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:37,630 INFO L168 Benchmark]: TraceAbstraction took 1338.86 ms. Allocated memory is still 121.6 MB. Free memory was 75.6 MB in the beginning and 90.0 MB in the end (delta: -14.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:29:37,630 INFO L168 Benchmark]: Witness Printer took 42.31 ms. Allocated memory is still 121.6 MB. Free memory was 90.0 MB in the beginning and 87.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:29:37,633 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 88.1 MB. Free memory was 60.3 MB in the beginning and 60.3 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.59 ms. Allocated memory was 88.1 MB in the beginning and 121.6 MB in the end (delta: 33.6 MB). Free memory was 53.7 MB in the beginning and 97.2 MB in the end (delta: -43.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.63 ms. Allocated memory is still 121.6 MB. Free memory was 97.2 MB in the beginning and 96.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.43 ms. Allocated memory is still 121.6 MB. Free memory was 96.0 MB in the beginning and 95.1 MB in the end (delta: 855.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 451.82 ms. Allocated memory is still 121.6 MB. Free memory was 95.1 MB in the beginning and 76.3 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1338.86 ms. Allocated memory is still 121.6 MB. Free memory was 75.6 MB in the beginning and 90.0 MB in the end (delta: -14.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 42.31 ms. Allocated memory is still 121.6 MB. Free memory was 90.0 MB in the beginning and 87.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L27] k = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L30] x = 1 [L31] y = z [L32] c = 1 [L34] COND TRUE 1 [L16] COND FALSE !(!(cond)) [L37] COND TRUE !(c < k) [L46] x = x * (z - 1) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 14 SDslu, 12 SDs, 0 SdLazy, 13 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, 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, 1 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 7 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...