./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF --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 1130d3df8d11f3be805af96558350a1bd8faf89323cc035b32267e4a54793a8c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:27:18,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:27:18,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:27:19,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:27:19,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:27:19,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:27:19,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:27:19,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:27:19,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:27:19,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:27:19,076 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:27:19,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:27:19,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:27:19,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:27:19,084 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:27:19,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:27:19,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:27:19,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:27:19,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:27:19,105 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:27:19,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:27:19,109 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:27:19,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:27:19,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:27:19,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:27:19,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:27:19,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:27:19,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:27:19,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:27:19,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:27:19,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:27:19,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:27:19,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:27:19,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:27:19,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:27:19,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:27:19,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:27:19,141 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:27:19,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:27:19,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:27:19,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:27:19,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:27:19,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:27:19,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:27:19,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:27:19,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:27:19,204 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:27:19,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:27:19,204 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:27:19,205 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:27:19,205 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:27:19,205 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:27:19,214 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:27:19,214 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:27:19,214 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:27:19,215 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:27:19,215 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:27:19,215 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:27:19,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:27:19,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:27:19,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:27:19,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:27:19,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:27:19,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:27:19,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:27:19,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:27:19,218 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:27:19,218 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:27:19,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:27:19,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:27:19,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:27:19,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:27:19,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:27:19,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:27:19,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:27:19,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:27:19,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:27:19,223 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:27:19,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:27:19,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:27:19,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:27:19,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:27:19,224 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_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1130d3df8d11f3be805af96558350a1bd8faf89323cc035b32267e4a54793a8c [2021-11-13 02:27:19,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:27:19,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:27:19,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:27:19,641 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:27:19,642 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:27:19,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-11-13 02:27:19,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/data/81a661b1f/5da4a3782c7c463daa512e5f69aaeec5/FLAG26c601547 [2021-11-13 02:27:20,298 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:27:20,300 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-11-13 02:27:20,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/data/81a661b1f/5da4a3782c7c463daa512e5f69aaeec5/FLAG26c601547 [2021-11-13 02:27:20,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/data/81a661b1f/5da4a3782c7c463daa512e5f69aaeec5 [2021-11-13 02:27:20,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:27:20,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:27:20,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:27:20,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:27:20,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:27:20,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:20,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca74e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20, skipping insertion in model container [2021-11-13 02:27:20,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:20,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:27:20,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:27:20,907 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/sv-benchmarks/c/loop-zilu/benchmark25_linear.i[868,881] [2021-11-13 02:27:20,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:27:20,927 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:27:20,939 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/sv-benchmarks/c/loop-zilu/benchmark25_linear.i[868,881] [2021-11-13 02:27:20,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:27:20,957 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:27:20,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20 WrapperNode [2021-11-13 02:27:20,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:27:20,959 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:27:20,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:27:20,960 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:27:20,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:20,983 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:21,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:27:21,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:27:21,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:27:21,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:27:21,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:21,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:21,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:21,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:21,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:21,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:21,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:21,040 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:27:21,041 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:27:21,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:27:21,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:27:21,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (1/1) ... [2021-11-13 02:27:21,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:27:21,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:27:21,087 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:27:21,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:27:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:27:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:27:21,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:27:21,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:27:21,350 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:27:21,351 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:27:21,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:27:21 BoogieIcfgContainer [2021-11-13 02:27:21,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:27:21,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:27:21,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:27:21,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:27:21,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:27:20" (1/3) ... [2021-11-13 02:27:21,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f678b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:27:21, skipping insertion in model container [2021-11-13 02:27:21,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:27:20" (2/3) ... [2021-11-13 02:27:21,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f678b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:27:21, skipping insertion in model container [2021-11-13 02:27:21,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:27:21" (3/3) ... [2021-11-13 02:27:21,363 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.i [2021-11-13 02:27:21,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:27:21,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:27:21,429 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:27:21,438 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 [2021-11-13 02:27:21,438 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:27:21,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-13 02:27:21,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:21,462 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-13 02:27:21,463 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:21,469 INFO L85 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-11-13 02:27:21,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:27:21,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103213478] [2021-11-13 02:27:21,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:21,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:27:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:21,656 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:27:21,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103213478] [2021-11-13 02:27:21,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103213478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:21,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:21,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:27:21,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208490733] [2021-11-13 02:27:21,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:21,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:27:21,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:27:21,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:27:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:27:21,709 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:21,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:21,787 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-11-13 02:27:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:27:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-13 02:27:21,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:21,803 INFO L225 Difference]: With dead ends: 16 [2021-11-13 02:27:21,809 INFO L226 Difference]: Without dead ends: 7 [2021-11-13 02:27:21,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:27:21,817 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.61ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:21,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 46.61ms Time] [2021-11-13 02:27:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-13 02:27:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-13 02:27:21,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:21,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-11-13 02:27:21,870 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-11-13 02:27:21,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:21,871 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-13 02:27:21,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:21,871 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-11-13 02:27:21,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 02:27:21,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:21,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 02:27:21,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:27:21,873 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-11-13 02:27:21,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:27:21,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319783366] [2021-11-13 02:27:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:21,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:27:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:21,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:21,977 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:27:21,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319783366] [2021-11-13 02:27:21,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319783366] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:27:21,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145104799] [2021-11-13 02:27:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:21,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:27:21,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:27:21,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:27:22,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 02:27:22,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:22,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:27:22,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:27:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:22,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:27:22,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:27:22,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145104799] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:27:22,185 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1378832975] [2021-11-13 02:27:22,221 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-13 02:27:22,223 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:27:22,233 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:27:22,241 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:27:22,242 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:27:22,302 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,310 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:27:22,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-13 02:27:22,320 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:27:22,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-13 02:27:22,345 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-13 02:27:22,373 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-13 02:27:22,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:27:22,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-13 02:27:22,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,421 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-13 02:27:22,423 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-13 02:27:22,430 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:27:22,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,493 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:27:22,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:27:22,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:27:22,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:27:22,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-13 02:27:22,541 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,550 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:27:22,553 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,554 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:27:22,555 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:27:22,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,571 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,574 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:27:22,577 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-13 02:27:22,578 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:27:22,579 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:94, output treesize:79 [2021-11-13 02:27:22,606 INFO L180 QuantifierPusher]: treesize reduction 6, result has 93.4 percent of original size [2021-11-13 02:27:22,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-11-13 02:27:22,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,769 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.5 percent of original size [2021-11-13 02:27:22,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-11-13 02:27:22,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:27:22,894 INFO L180 QuantifierPusher]: treesize reduction 24, result has 60.0 percent of original size [2021-11-13 02:27:22,899 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-13 02:27:22,912 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:27:23,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 02:27:23,266 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:27:23,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-13 02:27:23,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727997440] [2021-11-13 02:27:23,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 02:27:23,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:27:23,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:27:23,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:27:23,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:27:23,270 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:23,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:23,292 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-11-13 02:27:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 02:27:23,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-13 02:27:23,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:23,293 INFO L225 Difference]: With dead ends: 13 [2021-11-13 02:27:23,293 INFO L226 Difference]: Without dead ends: 10 [2021-11-13 02:27:23,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:27:23,296 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.45ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.29ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:23,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 13 Unknown, 0 Unchecked, 0.45ms Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 15.29ms Time] [2021-11-13 02:27:23,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-13 02:27:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-11-13 02:27:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-11-13 02:27:23,301 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2021-11-13 02:27:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:23,302 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-11-13 02:27:23,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-11-13 02:27:23,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 02:27:23,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:27:23,303 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-11-13 02:27:23,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:27:23,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-13 02:27:23,518 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:27:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:27:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1390313566, now seen corresponding path program 2 times [2021-11-13 02:27:23,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:27:23,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151956229] [2021-11-13 02:27:23,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:27:23,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:27:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:27:23,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-13 02:27:23,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:27:23,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151956229] [2021-11-13 02:27:23,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151956229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:27:23,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:27:23,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:27:23,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496967737] [2021-11-13 02:27:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:27:23,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:27:23,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:27:23,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:27:23,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:27:23,608 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:23,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:27:23,626 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-11-13 02:27:23,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:27:23,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-13 02:27:23,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:27:23,628 INFO L225 Difference]: With dead ends: 10 [2021-11-13 02:27:23,629 INFO L226 Difference]: Without dead ends: 0 [2021-11-13 02:27:23,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 02:27:23,637 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.10ms IncrementalHoareTripleChecker+Time [2021-11-13 02:27:23,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2 Invalid, 7 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 9.10ms Time] [2021-11-13 02:27:23,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-13 02:27:23,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-13 02:27:23,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 02:27:23,640 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-11-13 02:27:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:27:23,640 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 02:27:23,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 02:27:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-13 02:27:23,641 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-13 02:27:23,643 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-13 02:27:23,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 02:27:23,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-13 02:27:23,656 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-13 02:27:23,656 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-11-13 02:27:23,656 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-11-13 02:27:23,657 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-13 02:27:23,657 INFO L861 garLoopResultBuilder]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-11-13 02:27:23,657 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-11-13 02:27:23,657 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 10) [2021-11-13 02:27:23,658 INFO L858 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-11-13 02:27:23,658 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-11-13 02:27:23,662 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1] [2021-11-13 02:27:23,664 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-13 02:27:23,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:27:23 BoogieIcfgContainer [2021-11-13 02:27:23,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-13 02:27:23,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 02:27:23,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 02:27:23,680 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 02:27:23,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:27:21" (3/4) ... [2021-11-13 02:27:23,684 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-13 02:27:23,695 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-13 02:27:23,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-13 02:27:23,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-13 02:27:23,696 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-13 02:27:23,737 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-13 02:27:23,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 02:27:23,738 INFO L158 Benchmark]: Toolchain (without parser) took 3085.39ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 82.6MB in the beginning and 88.8MB in the end (delta: -6.1MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-13 02:27:23,739 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:27:23,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 303.21ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 87.9MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 02:27:23,740 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.16ms. Allocated memory is still 113.2MB. Free memory was 87.9MB in the beginning and 86.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:27:23,740 INFO L158 Benchmark]: Boogie Preprocessor took 23.53ms. Allocated memory is still 113.2MB. Free memory was 86.6MB in the beginning and 85.7MB in the end (delta: 888.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:27:23,741 INFO L158 Benchmark]: RCFGBuilder took 313.12ms. Allocated memory is still 113.2MB. Free memory was 85.7MB in the beginning and 76.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 02:27:23,742 INFO L158 Benchmark]: TraceAbstraction took 2323.10ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 76.2MB in the beginning and 90.9MB in the end (delta: -14.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-13 02:27:23,742 INFO L158 Benchmark]: Witness Printer took 58.18ms. Allocated memory is still 136.3MB. Free memory was 90.9MB in the beginning and 88.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 02:27:23,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory was 65.4MB in the beginning and 65.3MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 303.21ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 87.9MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.16ms. Allocated memory is still 113.2MB. Free memory was 87.9MB in the beginning and 86.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.53ms. Allocated memory is still 113.2MB. Free memory was 86.6MB in the beginning and 85.7MB in the end (delta: 888.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 313.12ms. Allocated memory is still 113.2MB. Free memory was 85.7MB in the beginning and 76.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2323.10ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 76.2MB in the beginning and 90.9MB in the end (delta: -14.7MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Witness Printer took 58.18ms. Allocated memory is still 136.3MB. Free memory was 90.9MB in the beginning and 88.8MB 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 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 71.00ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 44.82ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 10 mSDtfsCounter, 24 mSolverCounterSat, 1.54ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x <= 10 RESULT: Ultimate proved your program to be correct! [2021-11-13 02:27:23,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c11e9ba-c6be-43a9-b8d2-c441b6a5d57f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE