./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V --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 3a8c18680ee51ca2bbe0e4a07dd84bab232d284803c9048b6920d8cc21098c30 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:26:18,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:26:18,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:26:18,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:26:18,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:26:18,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:26:18,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:26:18,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:26:18,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:26:18,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:26:18,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:26:18,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:26:18,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:26:18,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:26:18,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:26:18,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:26:18,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:26:19,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:26:19,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:26:19,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:26:19,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:26:19,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:26:19,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:26:19,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:26:19,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:26:19,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:26:19,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:26:19,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:26:19,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:26:19,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:26:19,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:26:19,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:26:19,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:26:19,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:26:19,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:26:19,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:26:19,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:26:19,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:26:19,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:26:19,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:26:19,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:26:19,055 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:26:19,110 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:26:19,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:26:19,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:26:19,112 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:26:19,113 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:26:19,113 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:26:19,114 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:26:19,114 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:26:19,114 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:26:19,115 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:26:19,116 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:26:19,116 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:26:19,117 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:26:19,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:26:19,117 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:26:19,118 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:26:19,118 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:26:19,118 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:26:19,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:26:19,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:26:19,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:26:19,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:26:19,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:26:19,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:26:19,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:26:19,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:26:19,123 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:26:19,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:26:19,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:26:19,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:26:19,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:26:19,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:26:19,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:19,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:26:19,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:26:19,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:26:19,127 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:26:19,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:26:19,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:26:19,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:26:19,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:26:19,128 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_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a8c18680ee51ca2bbe0e4a07dd84bab232d284803c9048b6920d8cc21098c30 [2021-11-23 02:26:19,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:26:19,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:26:19,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:26:19,589 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:26:19,590 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:26:19,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c [2021-11-23 02:26:19,686 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/data/82e490b3a/960cec98780c4b98a5a7e100214176db/FLAG93b65ddf4 [2021-11-23 02:26:20,370 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:26:20,371 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c [2021-11-23 02:26:20,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/data/82e490b3a/960cec98780c4b98a5a7e100214176db/FLAG93b65ddf4 [2021-11-23 02:26:20,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/data/82e490b3a/960cec98780c4b98a5a7e100214176db [2021-11-23 02:26:20,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:26:20,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:26:20,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:20,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:26:20,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:26:20,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:20" (1/1) ... [2021-11-23 02:26:20,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f85f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:20, skipping insertion in model container [2021-11-23 02:26:20,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:20" (1/1) ... [2021-11-23 02:26:20,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:26:20,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:26:20,943 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c[555,568] [2021-11-23 02:26:20,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:20,973 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:26:20,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound100.c[555,568] [2021-11-23 02:26:20,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:26:21,016 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:26:21,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21 WrapperNode [2021-11-23 02:26:21,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:26:21,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:21,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:26:21,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:26:21,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,059 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 38 [2021-11-23 02:26:21,060 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:26:21,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:26:21,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:26:21,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:26:21,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,075 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:26:21,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:26:21,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:26:21,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:26:21,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (1/1) ... [2021-11-23 02:26:21,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:26:21,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:21,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:26:21,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:26:21,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:26:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:26:21,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:26:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:26:21,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:26:21,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:26:21,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 02:26:21,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 02:26:21,280 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:26:21,283 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:26:21,495 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:26:21,519 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:26:21,519 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 02:26:21,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:21 BoogieIcfgContainer [2021-11-23 02:26:21,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:26:21,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:26:21,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:26:21,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:26:21,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:20" (1/3) ... [2021-11-23 02:26:21,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7798da95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:21, skipping insertion in model container [2021-11-23 02:26:21,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:21" (2/3) ... [2021-11-23 02:26:21,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7798da95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:21, skipping insertion in model container [2021-11-23 02:26:21,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:21" (3/3) ... [2021-11-23 02:26:21,534 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound100.c [2021-11-23 02:26:21,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:26:21,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:26:21,606 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:26:21,615 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:26:21,615 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:26:21,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:26:21,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 02:26:21,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:21,644 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:21,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:21,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash 169979374, now seen corresponding path program 1 times [2021-11-23 02:26:21,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:21,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707981688] [2021-11-23 02:26:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:21,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:21,857 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:26:21,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036656382] [2021-11-23 02:26:21,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:21,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:21,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:21,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:21,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:26:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:26:21,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:26:21,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:26:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:26:22,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:26:22,206 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:26:22,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707981688] [2021-11-23 02:26:22,207 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 02:26:22,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036656382] [2021-11-23 02:26:22,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036656382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:26:22,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:26:22,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:26:22,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900142625] [2021-11-23 02:26:22,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:26:22,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:26:22,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:26:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:26:22,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:26:22,257 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:26:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:26:22,352 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2021-11-23 02:26:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 02:26:22,355 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-23 02:26:22,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:26:22,365 INFO L225 Difference]: With dead ends: 41 [2021-11-23 02:26:22,366 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 02:26:22,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:26:22,375 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:26:22,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:26:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 02:26:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-11-23 02:26:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:26:22,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-11-23 02:26:22,443 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 14 [2021-11-23 02:26:22,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:26:22,445 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-11-23 02:26:22,445 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:26:22,445 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-11-23 02:26:22,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 02:26:22,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:26:22,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:26:22,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:26:22,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-23 02:26:22,666 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:26:22,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:26:22,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1451058048, now seen corresponding path program 1 times [2021-11-23 02:26:22,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:26:22,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943706653] [2021-11-23 02:26:22,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:22,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:26:22,689 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 02:26:22,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424081847] [2021-11-23 02:26:22,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:26:22,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:26:22,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:26:22,691 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:26:22,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:26:22,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:26:22,761 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:26:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:26:22,798 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:26:22,798 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:26:22,800 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:26:22,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:26:23,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-23 02:26:23,034 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 02:26:23,041 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:26:23,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:26:23 BoogieIcfgContainer [2021-11-23 02:26:23,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:26:23,081 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:26:23,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:26:23,088 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:26:23,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:21" (3/4) ... [2021-11-23 02:26:23,091 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:26:23,155 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:26:23,155 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:26:23,156 INFO L158 Benchmark]: Toolchain (without parser) took 2427.56ms. Allocated memory is still 111.1MB. Free memory was 82.2MB in the beginning and 61.7MB in the end (delta: 20.5MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2021-11-23 02:26:23,157 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 81.8MB. Free memory was 51.5MB in the beginning and 51.5MB in the end (delta: 48.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:26:23,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.33ms. Allocated memory is still 111.1MB. Free memory was 82.1MB in the beginning and 72.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:26:23,159 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.08ms. Allocated memory is still 111.1MB. Free memory was 72.1MB in the beginning and 70.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:26:23,159 INFO L158 Benchmark]: Boogie Preprocessor took 27.05ms. Allocated memory is still 111.1MB. Free memory was 70.6MB in the beginning and 69.7MB in the end (delta: 982.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:26:23,160 INFO L158 Benchmark]: RCFGBuilder took 433.48ms. Allocated memory is still 111.1MB. Free memory was 69.7MB in the beginning and 59.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:26:23,161 INFO L158 Benchmark]: TraceAbstraction took 1555.51ms. Allocated memory is still 111.1MB. Free memory was 59.4MB in the beginning and 64.2MB in the end (delta: -4.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:26:23,161 INFO L158 Benchmark]: Witness Printer took 74.10ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:26:23,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 81.8MB. Free memory was 51.5MB in the beginning and 51.5MB in the end (delta: 48.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.33ms. Allocated memory is still 111.1MB. Free memory was 82.1MB in the beginning and 72.1MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.08ms. Allocated memory is still 111.1MB. Free memory was 72.1MB in the beginning and 70.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.05ms. Allocated memory is still 111.1MB. Free memory was 70.6MB in the beginning and 69.7MB in the end (delta: 982.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 433.48ms. Allocated memory is still 111.1MB. Free memory was 69.7MB in the beginning and 59.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1555.51ms. Allocated memory is still 111.1MB. Free memory was 59.4MB in the beginning and 64.2MB in the end (delta: -4.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 74.10ms. Allocated memory is still 111.1MB. Free memory was 63.8MB in the beginning and 61.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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() [L26] CALL assume_abort_if_not(z>=0 && z<=100) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) [L26] RET assume_abort_if_not(z>=0 && z<=100) VAL [z=0] [L27] k = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(k>=0 && k<=100) VAL [\old(cond)=1] [L13] COND FALSE !(!cond) [L28] RET assume_abort_if_not(k>=0 && k<=100) VAL [k=0, z=0] [L30] x = 1 [L31] y = z [L32] c = 1 VAL [c=1, k=0, x=1, y=0, z=0] [L34] COND TRUE 1 VAL [c=1, k=0, x=1, y=0, z=0] [L35] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L35] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [c=1, k=0, x=1, y=0, z=0] [L37] COND TRUE !(c < k) VAL [c=1, k=0, x=1, y=0, z=0] [L46] x = x * (z - 1) VAL [c=1, k=0, x=4294967295, y=0, z=0] [L48] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 15 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, InterpolantAutomatonStates: 5, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 SizeOfPredicates, 1 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 2/2 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! [2021-11-23 02:26:23,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9badfaab-b0f7-4438-9e83-50eeb0fb474b/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE