./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square_int.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_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_int.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:24:31,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:24:31,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:24:31,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:24:31,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:24:31,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:24:31,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:24:31,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:24:31,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:24:31,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:24:31,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:24:31,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:24:31,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:24:31,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:24:31,521 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:24:31,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:24:31,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:24:31,526 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:24:31,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:24:31,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:24:31,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:24:31,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:24:31,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:24:31,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:24:31,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:24:31,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:24:31,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:24:31,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:24:31,544 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:24:31,545 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:24:31,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:24:31,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:24:31,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:24:31,548 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:24:31,550 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:24:31,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:24:31,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:24:31,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:24:31,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:24:31,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:24:31,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:24:31,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 16:24:31,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:24:31,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:24:31,583 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:24:31,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:24:31,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:24:31,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:24:31,586 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:24:31,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:24:31,587 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:24:31,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 16:24:31,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:24:31,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:24:31,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:24:31,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:24:31,590 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:24:31,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:24:31,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:24:31,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:24:31,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:24:31,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:24:31,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:24:31,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:24:31,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:24:31,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:24:31,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:24:31,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:24:31,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 16:24:31,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 16:24:31,594 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:24:31,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:24:31,596 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:24:31,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:24:31,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2021-11-22 16:24:31,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:24:31,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:24:31,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:24:31,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:24:31,931 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:24:31,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/float-benchs/inv_square_int.c [2021-11-22 16:24:32,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data/7a28247a1/5a757d1d139f4e6bb814b2f79dca0796/FLAG4806ee4af [2021-11-22 16:24:32,486 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:24:32,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/sv-benchmarks/c/float-benchs/inv_square_int.c [2021-11-22 16:24:32,494 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data/7a28247a1/5a757d1d139f4e6bb814b2f79dca0796/FLAG4806ee4af [2021-11-22 16:24:32,898 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data/7a28247a1/5a757d1d139f4e6bb814b2f79dca0796 [2021-11-22 16:24:32,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:24:32,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:24:32,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:24:32,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:24:32,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:24:32,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:24:32" (1/1) ... [2021-11-22 16:24:32,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28765ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:32, skipping insertion in model container [2021-11-22 16:24:32,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:24:32" (1/1) ... [2021-11-22 16:24:32,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:24:32,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:24:33,054 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_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-11-22 16:24:33,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:24:33,074 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:24:33,085 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_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-11-22 16:24:33,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:24:33,100 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:24:33,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33 WrapperNode [2021-11-22 16:24:33,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:24:33,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:24:33,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:24:33,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:24:33,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,132 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2021-11-22 16:24:33,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:24:33,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:24:33,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:24:33,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:24:33,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:24:33,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:24:33,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:24:33,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:24:33,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (1/1) ... [2021-11-22 16:24:33,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:24:33,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:24:33,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:24:33,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:24:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:24:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 16:24:33,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:24:33,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:24:33,288 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:24:33,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:24:33,370 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:24:33,375 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:24:33,376 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 16:24:33,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:24:33 BoogieIcfgContainer [2021-11-22 16:24:33,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:24:33,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:24:33,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:24:33,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:24:33,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:24:32" (1/3) ... [2021-11-22 16:24:33,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85515d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:24:33, skipping insertion in model container [2021-11-22 16:24:33,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:33" (2/3) ... [2021-11-22 16:24:33,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85515d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:24:33, skipping insertion in model container [2021-11-22 16:24:33,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:24:33" (3/3) ... [2021-11-22 16:24:33,385 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2021-11-22 16:24:33,391 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:24:33,391 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 16:24:33,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:24:33,447 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=PETRI_NET, 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 [2021-11-22 16:24:33,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 16:24:33,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-22 16:24:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:24:33,466 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:33,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:24:33,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:24:33,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:33,473 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-11-22 16:24:33,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:33,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778226523] [2021-11-22 16:24:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:33,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:33,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:33,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 16:24:33,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778226523] [2021-11-22 16:24:33,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778226523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:33,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:33,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 16:24:33,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232701918] [2021-11-22 16:24:33,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:33,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:24:33,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 16:24:33,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:24:33,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:24:33,649 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-22 16:24:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:33,663 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-22 16:24:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:24:33,665 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 [2021-11-22 16:24:33,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:33,672 INFO L225 Difference]: With dead ends: 19 [2021-11-22 16:24:33,673 INFO L226 Difference]: Without dead ends: 7 [2021-11-22 16:24:33,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:24:33,683 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:33,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:24:33,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-22 16:24:33,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-22 16:24:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2021-11-22 16:24:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-22 16:24:33,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-22 16:24:33,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:33,717 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-22 16:24:33,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-22 16:24:33,717 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-22 16:24:33,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:24:33,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:33,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:24:33,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 16:24:33,719 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:24:33,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2021-11-22 16:24:33,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 16:24:33,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798303960] [2021-11-22 16:24:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:33,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 16:24:33,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:24:33,768 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 16:24:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 16:24:33,858 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 16:24:33,858 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 16:24:33,861 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 16:24:33,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 16:24:33,881 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-22 16:24:33,886 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 16:24:33,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 04:24:33 BoogieIcfgContainer [2021-11-22 16:24:33,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 16:24:33,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 16:24:33,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 16:24:33,937 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 16:24:33,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:24:33" (3/4) ... [2021-11-22 16:24:33,941 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 16:24:33,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 16:24:33,943 INFO L158 Benchmark]: Toolchain (without parser) took 1040.02ms. Allocated memory is still 104.9MB. Free memory was 69.4MB in the beginning and 80.2MB in the end (delta: -10.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:33,943 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 50.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:33,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.61ms. Allocated memory is still 104.9MB. Free memory was 69.1MB in the beginning and 59.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 16:24:33,947 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.28ms. Allocated memory is still 104.9MB. Free memory was 59.2MB in the beginning and 57.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:33,949 INFO L158 Benchmark]: Boogie Preprocessor took 17.63ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 56.9MB in the end (delta: 943.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:24:33,952 INFO L158 Benchmark]: RCFGBuilder took 226.15ms. Allocated memory is still 104.9MB. Free memory was 56.8MB in the beginning and 78.1MB in the end (delta: -21.3MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2021-11-22 16:24:33,953 INFO L158 Benchmark]: TraceAbstraction took 556.87ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 80.9MB in the end (delta: -3.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-22 16:24:33,953 INFO L158 Benchmark]: Witness Printer took 4.99ms. Allocated memory is still 104.9MB. Free memory was 80.9MB in the beginning and 80.2MB in the end (delta: 669.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:33,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 50.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.61ms. Allocated memory is still 104.9MB. Free memory was 69.1MB in the beginning and 59.3MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.28ms. Allocated memory is still 104.9MB. Free memory was 59.2MB in the beginning and 57.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.63ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 56.9MB in the end (delta: 943.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 226.15ms. Allocated memory is still 104.9MB. Free memory was 56.8MB in the beginning and 78.1MB in the end (delta: -21.3MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * TraceAbstraction took 556.87ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 80.9MB in the end (delta: -3.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.99ms. Allocated memory is still 104.9MB. Free memory was 80.9MB in the beginning and 80.2MB in the end (delta: 669.4kB). There was no memory consumed. 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 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] int x; [L18] float y, z; [L20] x = __VERIFIER_nondet_int() [L21] CALL assume_abort_if_not(x >= -10 && x <= 10) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x >= -10 && x <= 10) [L23] y = x*x - 2.f [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-22 16:24:34,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_int.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 16:24:36,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 16:24:36,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 16:24:36,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 16:24:36,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 16:24:36,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 16:24:36,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 16:24:36,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 16:24:36,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 16:24:36,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 16:24:36,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 16:24:36,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 16:24:36,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 16:24:36,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 16:24:36,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 16:24:36,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 16:24:36,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 16:24:36,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 16:24:36,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 16:24:36,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 16:24:36,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 16:24:36,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 16:24:36,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 16:24:36,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 16:24:36,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 16:24:36,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 16:24:36,470 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 16:24:36,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 16:24:36,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 16:24:36,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 16:24:36,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 16:24:36,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 16:24:36,478 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 16:24:36,479 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 16:24:36,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 16:24:36,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 16:24:36,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 16:24:36,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 16:24:36,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 16:24:36,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 16:24:36,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 16:24:36,499 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 16:24:36,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 16:24:36,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 16:24:36,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 16:24:36,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 16:24:36,546 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 16:24:36,546 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 16:24:36,546 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 16:24:36,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 16:24:36,547 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 16:24:36,547 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 16:24:36,548 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 16:24:36,548 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 16:24:36,548 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 16:24:36,548 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 16:24:36,549 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 16:24:36,549 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 16:24:36,549 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 16:24:36,549 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 16:24:36,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 16:24:36,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 16:24:36,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 16:24:36,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 16:24:36,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 16:24:36,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 16:24:36,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:24:36,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 16:24:36,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 16:24:36,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 16:24:36,552 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 16:24:36,552 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 16:24:36,552 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 16:24:36,552 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 16:24:36,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 16:24:36,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 16:24:36,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 16:24:36,553 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2021-11-22 16:24:36,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 16:24:36,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 16:24:36,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 16:24:36,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 16:24:36,929 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 16:24:36,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/float-benchs/inv_square_int.c [2021-11-22 16:24:37,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data/89238136a/7506e87f50cd40288ed3f6826df7aeeb/FLAG497472dfa [2021-11-22 16:24:37,472 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 16:24:37,473 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/sv-benchmarks/c/float-benchs/inv_square_int.c [2021-11-22 16:24:37,480 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data/89238136a/7506e87f50cd40288ed3f6826df7aeeb/FLAG497472dfa [2021-11-22 16:24:37,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/data/89238136a/7506e87f50cd40288ed3f6826df7aeeb [2021-11-22 16:24:37,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 16:24:37,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 16:24:37,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 16:24:37,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 16:24:37,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 16:24:37,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:24:37" (1/1) ... [2021-11-22 16:24:37,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11dc0503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:37, skipping insertion in model container [2021-11-22 16:24:37,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 04:24:37" (1/1) ... [2021-11-22 16:24:37,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 16:24:37,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 16:24:38,054 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_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-11-22 16:24:38,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:24:38,087 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 16:24:38,104 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_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-11-22 16:24:38,126 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 16:24:38,143 INFO L208 MainTranslator]: Completed translation [2021-11-22 16:24:38,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38 WrapperNode [2021-11-22 16:24:38,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 16:24:38,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 16:24:38,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 16:24:38,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 16:24:38,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,182 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2021-11-22 16:24:38,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 16:24:38,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 16:24:38,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 16:24:38,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 16:24:38,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 16:24:38,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 16:24:38,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 16:24:38,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 16:24:38,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (1/1) ... [2021-11-22 16:24:38,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 16:24:38,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 16:24:38,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 16:24:38,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 16:24:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 16:24:38,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 16:24:38,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 16:24:38,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 16:24:38,416 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 16:24:38,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 16:24:39,095 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 16:24:39,101 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 16:24:39,101 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 16:24:39,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:24:39 BoogieIcfgContainer [2021-11-22 16:24:39,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 16:24:39,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 16:24:39,105 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 16:24:39,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 16:24:39,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 04:24:37" (1/3) ... [2021-11-22 16:24:39,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8ada1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:24:39, skipping insertion in model container [2021-11-22 16:24:39,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 04:24:38" (2/3) ... [2021-11-22 16:24:39,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8ada1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 04:24:39, skipping insertion in model container [2021-11-22 16:24:39,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:24:39" (3/3) ... [2021-11-22 16:24:39,123 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2021-11-22 16:24:39,128 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 16:24:39,128 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 16:24:39,187 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 16:24:39,195 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=PETRI_NET, 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 [2021-11-22 16:24:39,196 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 16:24:39,209 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-22 16:24:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:24:39,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:39,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:24:39,217 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:24:39,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:39,222 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-11-22 16:24:39,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:24:39,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [950584839] [2021-11-22 16:24:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:39,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:24:39,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:24:39,238 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:24:39,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 16:24:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:39,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-22 16:24:39,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:39,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:39,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:24:39,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:39,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:24:39,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [950584839] [2021-11-22 16:24:39,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [950584839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:39,418 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:39,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 16:24:39,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947824320] [2021-11-22 16:24:39,421 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:39,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 16:24:39,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:24:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 16:24:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:24:39,487 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-22 16:24:39,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:39,511 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-11-22 16:24:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 16:24:39,515 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 [2021-11-22 16:24:39,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:39,525 INFO L225 Difference]: With dead ends: 19 [2021-11-22 16:24:39,525 INFO L226 Difference]: Without dead ends: 7 [2021-11-22 16:24:39,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 16:24:39,537 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:39,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 16:24:39,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-22 16:24:39,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-22 16:24:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 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) [2021-11-22 16:24:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-22 16:24:39,572 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-22 16:24:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:39,572 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-22 16:24:39,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-22 16:24:39,573 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-22 16:24:39,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 16:24:39,573 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 16:24:39,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 16:24:39,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:39,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:24:39,795 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 16:24:39,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 16:24:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2021-11-22 16:24:39,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 16:24:39,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481003320] [2021-11-22 16:24:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 16:24:39,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 16:24:39,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 16:24:39,803 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 16:24:39,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 16:24:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 16:24:39,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 16:24:39,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 16:24:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:42,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 16:24:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 16:24:44,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 16:24:44,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481003320] [2021-11-22 16:24:44,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481003320] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 16:24:44,264 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 16:24:44,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 16:24:44,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523768546] [2021-11-22 16:24:44,265 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 16:24:44,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 16:24:44,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 16:24:44,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 16:24:44,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 16:24:44,268 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-11-22 16:24:44,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 16:24:44,674 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-11-22 16:24:44,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 16:24:44,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) Word has length 6 [2021-11-22 16:24:44,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 16:24:44,675 INFO L225 Difference]: With dead ends: 7 [2021-11-22 16:24:44,675 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 16:24:44,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-22 16:24:44,677 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 16:24:44,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 16:24:44,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 16:24:44,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 16:24:44,679 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) [2021-11-22 16:24:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 16:24:44,680 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-11-22 16:24:44,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 16:24:44,680 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 16:24:44,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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) [2021-11-22 16:24:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 16:24:44,681 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 16:24:44,684 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 16:24:44,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 16:24:44,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 16:24:44,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-22 16:24:44,902 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-22 16:24:44,902 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-22 16:24:44,903 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-22 16:24:44,903 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-22 16:24:44,903 INFO L861 garLoopResultBuilder]: At program point L26(lines 15 27) the Hoare annotation is: true [2021-11-22 16:24:44,903 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-22 16:24:44,904 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-11-22 16:24:44,904 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-11-22 16:24:44,904 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-11-22 16:24:44,904 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-11-22 16:24:44,905 INFO L861 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: true [2021-11-22 16:24:44,908 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-22 16:24:44,910 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 16:24:44,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 04:24:44 BoogieIcfgContainer [2021-11-22 16:24:44,927 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 16:24:44,928 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 16:24:44,928 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 16:24:44,928 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 16:24:44,929 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 04:24:39" (3/4) ... [2021-11-22 16:24:44,936 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 16:24:44,952 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-22 16:24:44,952 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 16:24:44,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 16:24:44,953 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 16:24:44,997 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 16:24:45,000 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 16:24:45,002 INFO L158 Benchmark]: Toolchain (without parser) took 7121.40ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.1MB in the beginning and 41.9MB in the end (delta: -6.9MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-11-22 16:24:45,002 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:45,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.43ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 40.3MB in the end (delta: -5.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-11-22 16:24:45,004 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.14ms. Allocated memory is still 56.6MB. Free memory was 40.3MB in the beginning and 38.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:24:45,004 INFO L158 Benchmark]: Boogie Preprocessor took 50.56ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 37.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:45,004 INFO L158 Benchmark]: RCFGBuilder took 868.22ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 29.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 16:24:45,005 INFO L158 Benchmark]: TraceAbstraction took 5822.30ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 44.3MB in the end (delta: -15.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 16:24:45,006 INFO L158 Benchmark]: Witness Printer took 72.45ms. Allocated memory is still 69.2MB. Free memory was 44.3MB in the beginning and 41.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 16:24:45,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 56.6MB. Free memory is still 37.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.43ms. Allocated memory is still 56.6MB. Free memory was 34.9MB in the beginning and 40.3MB in the end (delta: -5.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.14ms. Allocated memory is still 56.6MB. Free memory was 40.3MB in the beginning and 38.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.56ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 37.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 868.22ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 29.6MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5822.30ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 29.2MB in the beginning and 44.3MB in the end (delta: -15.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 72.45ms. Allocated memory is still 69.2MB. Free memory was 44.3MB in the beginning and 41.9MB in the end (delta: 2.4MB). 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: 13]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1 IncrementalHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 1 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 5 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-22 16:24:45,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fcee3415-1329-4ba2-a0a7-8038f7dcb8e8/bin/uautomizer-w2VwFs6gM0/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