./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound1.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_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/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_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/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_881de22c-7c04-44d2-ac14-aacf11519469/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 7be07080670d55b62a9775acd64fddabe08b2aaa .................................................................................................................................................................................................................................................................................................................................................................... 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 02:26:46,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:46,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:46,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:46,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:46,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:46,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:46,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:46,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:46,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:46,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:46,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:46,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:46,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:46,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:46,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:46,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:46,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:46,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:46,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:46,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:46,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:46,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:46,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:46,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:46,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:46,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:46,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:46,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:46,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:46,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:46,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:46,583 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:46,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:46,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:46,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:46,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:46,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:46,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:46,589 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:46,590 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:46,592 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:46,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:46,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:46,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:46,644 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:46,645 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:46,645 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:46,645 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:46,645 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:46,645 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:46,646 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:46,647 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:46,647 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:46,647 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:46,647 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:46,648 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:46,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:46,649 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:46,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:46,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:46,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:46,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:46,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:46,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:46,650 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:46,650 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:46,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:46,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:46,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:46,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:46,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:46,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:46,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:46,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:46,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:46,654 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:46,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:46,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:46,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:46,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:46,655 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_881de22c-7c04-44d2-ac14-aacf11519469/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be07080670d55b62a9775acd64fddabe08b2aaa [2021-10-11 02:26:46,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:46,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:46,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:46,936 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:46,937 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:46,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound1.c [2021-10-11 02:26:47,031 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI/data/25c99e8f2/a6e26f050e4c4706b73bf2a99ad4add0/FLAGe9d163b06 [2021-10-11 02:26:47,570 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:47,570 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound1.c [2021-10-11 02:26:47,582 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI/data/25c99e8f2/a6e26f050e4c4706b73bf2a99ad4add0/FLAGe9d163b06 [2021-10-11 02:26:47,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI/data/25c99e8f2/a6e26f050e4c4706b73bf2a99ad4add0 [2021-10-11 02:26:47,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:47,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:47,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:47,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:47,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:47,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:47" (1/1) ... [2021-10-11 02:26:47,959 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@695fcc30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:47, skipping insertion in model container [2021-10-11 02:26:47,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:47" (1/1) ... [2021-10-11 02:26:47,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:47,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:48,177 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_881de22c-7c04-44d2-ac14-aacf11519469/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound1.c[458,471] [2021-10-11 02:26:48,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:48,201 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:48,214 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_881de22c-7c04-44d2-ac14-aacf11519469/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_unwindbound1.c[458,471] [2021-10-11 02:26:48,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:48,236 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:48,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48 WrapperNode [2021-10-11 02:26:48,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:48,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:48,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:48,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:48,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... [2021-10-11 02:26:48,252 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... [2021-10-11 02:26:48,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:48,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:48,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:48,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:48,281 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... [2021-10-11 02:26:48,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... [2021-10-11 02:26:48,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... [2021-10-11 02:26:48,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... [2021-10-11 02:26:48,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... [2021-10-11 02:26:48,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... [2021-10-11 02:26:48,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... [2021-10-11 02:26:48,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:48,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:48,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:48,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:48,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/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 02:26:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:48,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:48,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:48,674 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:48,674 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 02:26:48,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:48 BoogieIcfgContainer [2021-10-11 02:26:48,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:48,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:48,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:48,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:48,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:47" (1/3) ... [2021-10-11 02:26:48,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328d0fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:48, skipping insertion in model container [2021-10-11 02:26:48,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:48" (2/3) ... [2021-10-11 02:26:48,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@328d0fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:48, skipping insertion in model container [2021-10-11 02:26:48,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:48" (3/3) ... [2021-10-11 02:26:48,693 INFO L111 eAbstractionObserver]: Analyzing ICFG ps5-ll_unwindbound1.c [2021-10-11 02:26:48,723 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:48,725 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:26:48,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:26:48,780 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:48,780 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:48,780 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:48,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:48,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:48,781 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:48,781 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:48,781 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:48,795 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-10-11 02:26:48,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:26:48,799 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:48,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:26:48,801 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:48,806 INFO L82 PathProgramCache]: Analyzing trace with hash 93462408, now seen corresponding path program 1 times [2021-10-11 02:26:48,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:48,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329959762] [2021-10-11 02:26:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:48,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:49,035 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 02:26:49,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329959762] [2021-10-11 02:26:49,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:49,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:49,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105557343] [2021-10-11 02:26:49,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:26:49,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:26:49,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:49,064 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2021-10-11 02:26:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:49,086 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2021-10-11 02:26:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:26:49,087 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2021-10-11 02:26:49,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:49,108 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:26:49,109 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:26:49,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:49,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:26:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:26:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:26:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-11 02:26:49,149 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2021-10-11 02:26:49,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:49,150 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-11 02:26:49,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:26:49,150 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-11 02:26:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:26:49,151 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:49,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:26:49,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:49,152 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:49,156 INFO L82 PathProgramCache]: Analyzing trace with hash 92788139, now seen corresponding path program 1 times [2021-10-11 02:26:49,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:49,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229027707] [2021-10-11 02:26:49,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:49,189 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:26:49,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542563716] [2021-10-11 02:26:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/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 02:26:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:49,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 02:26:49,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:49,411 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 02:26:49,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:26:49,462 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 02:26:49,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229027707] [2021-10-11 02:26:49,463 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:26:49,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542563716] [2021-10-11 02:26:49,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:49,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:26:49,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214359667] [2021-10-11 02:26:49,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:26:49,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:26:49,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:26:49,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:49,471 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 6 states. [2021-10-11 02:26:52,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:52,348 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-10-11 02:26:52,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 02:26:52,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2021-10-11 02:26:52,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:52,350 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:26:52,350 INFO L226 Difference]: Without dead ends: 32 [2021-10-11 02:26:52,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:26:52,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-11 02:26:52,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2021-10-11 02:26:52,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-10-11 02:26:52,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-10-11 02:26:52,360 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 5 [2021-10-11 02:26:52,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:52,360 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-10-11 02:26:52,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:26:52,361 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-10-11 02:26:52,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 02:26:52,362 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:52,362 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:52,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:26:52,579 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:52,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:52,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1170197384, now seen corresponding path program 1 times [2021-10-11 02:26:52,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:52,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218251397] [2021-10-11 02:26:52,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:52,592 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:26:52,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071123236] [2021-10-11 02:26:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/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 02:26:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:26:52,671 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:26:52,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:26:52,689 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:26:52,720 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:26:52,720 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:26:52,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:26:52,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:52 BoogieIcfgContainer [2021-10-11 02:26:52,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:52,962 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:52,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:52,963 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:52,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:48" (3/4) ... [2021-10-11 02:26:52,965 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:26:53,038 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_881de22c-7c04-44d2-ac14-aacf11519469/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:26:53,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:53,047 INFO L168 Benchmark]: Toolchain (without parser) took 5096.58 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 66.2 MB in the beginning and 85.8 MB in the end (delta: -19.6 MB). Peak memory consumption was 177.8 kB. Max. memory is 16.1 GB. [2021-10-11 02:26:53,048 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 51.2 MB in the beginning and 51.1 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:53,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.31 ms. Allocated memory is still 98.6 MB. Free memory was 66.0 MB in the beginning and 74.2 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:53,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.82 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 72.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:53,052 INFO L168 Benchmark]: Boogie Preprocessor took 21.72 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:53,053 INFO L168 Benchmark]: RCFGBuilder took 389.80 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 54.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:53,053 INFO L168 Benchmark]: TraceAbstraction took 4275.84 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 53.9 MB in the beginning and 87.8 MB in the end (delta: -34.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:53,054 INFO L168 Benchmark]: Witness Printer took 83.29 ms. Allocated memory is still 119.5 MB. Free memory was 87.8 MB in the beginning and 85.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:53,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory was 51.2 MB in the beginning and 51.1 MB in the end (delta: 44.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.31 ms. Allocated memory is still 98.6 MB. Free memory was 66.0 MB in the beginning and 74.2 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.82 ms. Allocated memory is still 98.6 MB. Free memory was 74.2 MB in the beginning and 72.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.72 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 389.80 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 54.5 MB in the end (delta: 17.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4275.84 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 53.9 MB in the beginning and 87.8 MB in the end (delta: -34.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 83.29 ms. Allocated memory is still 119.5 MB. Free memory was 87.8 MB in the beginning and 85.8 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L7] COND FALSE !(!cond) [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [counter=0] [L28] EXPR counter++ VAL [counter=1] [L28] COND TRUE counter++<1 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x VAL [counter=1] [L28] EXPR counter++ VAL [counter=2] [L28] COND FALSE !(counter++<1) [L10] COND FALSE !(!(cond)) VAL [counter=2] [L10] COND TRUE !(cond) VAL [counter=2] [L12] reach_error() VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 36 SDslu, 30 SDs, 0 SdLazy, 26 SolverSat, 21 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, 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, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 332 SizeOfPredicates, 6 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...