./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/count_by_1_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/count_by_1_variant.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8873a5afb79ec0e8798e8f1423b386b30ed09073bcea97b4a19d8bc56ced7206 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:53:59,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:53:59,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:53:59,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:53:59,371 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:53:59,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:53:59,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:53:59,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:53:59,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:53:59,401 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:53:59,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:53:59,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:53:59,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:53:59,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:53:59,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:53:59,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:53:59,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:53:59,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:53:59,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:53:59,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:53:59,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:53:59,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:53:59,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:53:59,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:53:59,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:53:59,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:53:59,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:53:59,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:53:59,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:53:59,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:53:59,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:53:59,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:53:59,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:53:59,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:53:59,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:53:59,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:53:59,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:53:59,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:53:59,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:53:59,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:53:59,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:53:59,483 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:53:59,541 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:53:59,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:53:59,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:53:59,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:53:59,545 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:53:59,545 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:53:59,545 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:53:59,546 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:53:59,546 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:53:59,546 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:53:59,555 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:53:59,556 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:53:59,556 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:53:59,557 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:53:59,557 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:53:59,557 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:53:59,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:53:59,558 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:53:59,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:53:59,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:53:59,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:53:59,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:53:59,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:53:59,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:53:59,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:53:59,561 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:53:59,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:53:59,562 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:53:59,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:53:59,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:53:59,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:53:59,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:53:59,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:53:59,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:53:59,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:53:59,565 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:53:59,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:53:59,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:53:59,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:53:59,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:53:59,566 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8873a5afb79ec0e8798e8f1423b386b30ed09073bcea97b4a19d8bc56ced7206 [2021-11-12 23:53:59,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:53:59,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:53:59,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:53:59,950 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:53:59,950 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:53:59,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loop-new/count_by_1_variant.i [2021-11-12 23:54:00,050 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/data/e5d6ec136/b6e70b3a218e494e916cdbe05d6b7ecb/FLAGc4d37cf4c [2021-11-12 23:54:00,598 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:54:00,599 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/sv-benchmarks/c/loop-new/count_by_1_variant.i [2021-11-12 23:54:00,606 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/data/e5d6ec136/b6e70b3a218e494e916cdbe05d6b7ecb/FLAGc4d37cf4c [2021-11-12 23:54:00,971 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/data/e5d6ec136/b6e70b3a218e494e916cdbe05d6b7ecb [2021-11-12 23:54:00,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:54:00,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:54:00,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:54:00,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:54:00,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:54:00,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:54:00" (1/1) ... [2021-11-12 23:54:00,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43339be2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:00, skipping insertion in model container [2021-11-12 23:54:00,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:54:00" (1/1) ... [2021-11-12 23:54:01,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:54:01,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:54:01,256 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/sv-benchmarks/c/loop-new/count_by_1_variant.i[891,904] [2021-11-12 23:54:01,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:54:01,278 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:54:01,295 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/sv-benchmarks/c/loop-new/count_by_1_variant.i[891,904] [2021-11-12 23:54:01,299 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:54:01,322 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:54:01,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01 WrapperNode [2021-11-12 23:54:01,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:54:01,325 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:54:01,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:54:01,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:54:01,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:54:01,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:54:01,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:54:01,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:54:01,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:54:01,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:54:01,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:54:01,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:54:01,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (1/1) ... [2021-11-12 23:54:01,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:54:01,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:01,466 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:54:01,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:54:01,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:54:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:54:01,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:54:01,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:54:01,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:54:01,729 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:54:01,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:01 BoogieIcfgContainer [2021-11-12 23:54:01,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:54:01,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:54:01,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:54:01,740 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:54:01,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:54:00" (1/3) ... [2021-11-12 23:54:01,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdbea28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:54:01, skipping insertion in model container [2021-11-12 23:54:01,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:54:01" (2/3) ... [2021-11-12 23:54:01,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fdbea28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:54:01, skipping insertion in model container [2021-11-12 23:54:01,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:01" (3/3) ... [2021-11-12 23:54:01,745 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2021-11-12 23:54:01,753 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:54:01,753 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:54:01,817 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:54:01,827 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:54:01,828 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:54:01,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2021-11-12 23:54:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-12 23:54:01,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:01,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-12 23:54:01,854 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:01,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:01,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1916652, now seen corresponding path program 1 times [2021-11-12 23:54:01,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:54:01,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570980428] [2021-11-12 23:54:01,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:01,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:54:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:02,131 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:54:02,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570980428] [2021-11-12 23:54:02,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570980428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:54:02,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:54:02,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:54:02,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201342589] [2021-11-12 23:54:02,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:54:02,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:54:02,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:54:02,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:54:02,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:54:02,195 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-12 23:54:02,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:02,252 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-12 23:54:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:54:02,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2021-11-12 23:54:02,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:02,265 INFO L225 Difference]: With dead ends: 17 [2021-11-12 23:54:02,265 INFO L226 Difference]: Without dead ends: 9 [2021-11-12 23:54:02,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:54:02,274 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 6 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.92ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.64ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:02,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7 Invalid, 15 Unknown, 0 Unchecked, 0.92ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 24.64ms Time] [2021-11-12 23:54:02,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-12 23:54:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2021-11-12 23:54:02,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-11-12 23:54:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-12 23:54:02,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-11-12 23:54:02,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:02,328 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-12 23:54:02,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-11-12 23:54:02,329 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-12 23:54:02,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:54:02,329 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:54:02,330 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-12 23:54:02,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:54:02,331 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:54:02,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:54:02,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1269509173, now seen corresponding path program 1 times [2021-11-12 23:54:02,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:54:02,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338711357] [2021-11-12 23:54:02,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:02,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:54:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:02,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:02,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:54:02,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338711357] [2021-11-12 23:54:02,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338711357] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 23:54:02,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835414596] [2021-11-12 23:54:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:54:02,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:02,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:54:02,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:54:02,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 23:54:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:54:02,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:54:02,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:54:02,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:02,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:54:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:54:02,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835414596] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:54:02,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1584693696] [2021-11-12 23:54:02,820 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-12 23:54:02,820 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 23:54:02,825 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 23:54:02,833 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 23:54:02,833 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 23:54:02,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:02,918 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:54:02,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:02,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-12 23:54:02,935 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-12 23:54:02,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:02,950 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-12 23:54:02,954 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-12 23:54:03,004 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_8|], 10=[|v_#valid_9|]} [2021-11-12 23:54:03,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:54:03,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-11-12 23:54:03,049 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:03,050 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 23:54:03,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:03,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-12 23:54:03,053 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-12 23:54:03,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,082 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:03,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:54:03,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:54:03,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:54:03,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-12 23:54:03,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-12 23:54:03,124 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:03,129 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:54:03,132 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:03,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-12 23:54:03,134 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-12 23:54:03,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,173 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:03,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:03,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-12 23:54:03,200 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-12 23:54:03,201 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:89, output treesize:74 [2021-11-12 23:54:03,220 INFO L180 QuantifierPusher]: treesize reduction 4, result has 96.3 percent of original size [2021-11-12 23:54:03,225 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-12 23:54:03,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:03,429 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-11-12 23:54:03,440 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 23:54:03,454 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 219 [2021-11-12 23:54:03,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 23:54:03,605 INFO L180 QuantifierPusher]: treesize reduction 24, result has 70.7 percent of original size [2021-11-12 23:54:03,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-11-12 23:54:03,620 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 23:54:03,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-12 23:54:03,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-12 23:54:03,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-12 23:54:03,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178915988] [2021-11-12 23:54:03,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-12 23:54:03,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-12 23:54:03,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:54:03,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-12 23:54:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:54:03,998 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-12 23:54:04,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:54:04,080 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-11-12 23:54:04,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:54:04,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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 7 [2021-11-12 23:54:04,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:54:04,081 INFO L225 Difference]: With dead ends: 13 [2021-11-12 23:54:04,081 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 23:54:04,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:54:04,085 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:54:04,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 25 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 27.43ms Time] [2021-11-12 23:54:04,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 23:54:04,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 23:54:04,088 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) [2021-11-12 23:54:04,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 23:54:04,089 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-12 23:54:04,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:54:04,089 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 23:54:04,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 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) [2021-11-12 23:54:04,090 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 23:54:04,090 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 23:54:04,093 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:54:04,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:54:04,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:54:04,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 23:54:04,358 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 23:54:04,358 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-12 23:54:04,359 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 23:54:04,359 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-12 23:54:04,359 INFO L854 garLoopResultBuilder]: At program point L26-3(lines 26 28) the Hoare annotation is: (or (and (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) (<= |ULTIMATE.start_main_~i~0#1| 1000000)) (= |ULTIMATE.start_main_~i~0#1| 0)) [2021-11-12 23:54:04,360 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-12 23:54:04,360 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~i~0#1| 999999) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) [2021-11-12 23:54:04,364 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:54:04,366 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:54:04,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:54:04 BoogieIcfgContainer [2021-11-12 23:54:04,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:54:04,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:54:04,402 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:54:04,402 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:54:04,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:54:01" (3/4) ... [2021-11-12 23:54:04,407 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 23:54:04,423 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-12 23:54:04,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-12 23:54:04,424 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-12 23:54:04,425 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-12 23:54:04,481 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:54:04,481 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:54:04,482 INFO L158 Benchmark]: Toolchain (without parser) took 3492.15ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 41.1MB in the beginning and 62.3MB in the end (delta: -21.1MB). Peak memory consumption was 95.9kB. Max. memory is 16.1GB. [2021-11-12 23:54:04,482 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:54:04,484 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.79ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 40.9MB in the beginning and 77.6MB in the end (delta: -36.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:54:04,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.91ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:54:04,485 INFO L158 Benchmark]: Boogie Preprocessor took 46.15ms. Allocated memory is still 100.7MB. Free memory was 76.4MB in the beginning and 75.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:54:04,486 INFO L158 Benchmark]: RCFGBuilder took 306.84ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 65.9MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:54:04,486 INFO L158 Benchmark]: TraceAbstraction took 2665.23ms. Allocated memory is still 100.7MB. Free memory was 65.5MB in the beginning and 64.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2021-11-12 23:54:04,487 INFO L158 Benchmark]: Witness Printer took 79.83ms. Allocated memory is still 100.7MB. Free memory was 64.3MB in the beginning and 62.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:54:04,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 79.7MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.79ms. Allocated memory was 79.7MB in the beginning and 100.7MB in the end (delta: 21.0MB). Free memory was 40.9MB in the beginning and 77.6MB in the end (delta: -36.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.91ms. Allocated memory is still 100.7MB. Free memory was 77.6MB in the beginning and 76.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.15ms. Allocated memory is still 100.7MB. Free memory was 76.4MB in the beginning and 75.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 306.84ms. Allocated memory is still 100.7MB. Free memory was 75.4MB in the beginning and 65.9MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2665.23ms. Allocated memory is still 100.7MB. Free memory was 65.5MB in the beginning and 64.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * Witness Printer took 79.83ms. Allocated memory is still 100.7MB. Free memory was 64.3MB in the beginning and 62.3MB in the end (delta: 2.0MB). 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: 19]: 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, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 52.08ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 42.81ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 3 mSDtfsCounter, 26 mSolverCounterSat, 1.87ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 12, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 9 NumberOfFragments, 18 HoareAnnotationTreeSize, 2 FomulaSimplifications, 55 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 57 SizeOfPredicates, 2 NumberOfNonLiveVariables, 43 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 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: 17]: Loop Invariant Derived loop invariant: i <= 999999 && 1 <= cond - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (1 <= cond && i <= 1000000) || i == 0 RESULT: Ultimate proved your program to be correct! [2021-11-12 23:54:04,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8114ce8-94e0-4047-83e5-77d22d3b3227/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE