./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI --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 cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:06:12,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:06:12,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:06:12,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:06:12,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:06:12,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:06:12,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:06:12,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:06:12,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:06:12,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:06:12,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:06:12,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:06:12,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:06:12,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:06:12,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:06:12,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:06:12,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:06:12,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:06:12,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:06:12,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:06:12,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:06:12,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:06:12,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:06:12,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:06:12,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:06:12,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:06:12,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:06:12,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:06:12,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:06:12,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:06:12,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:06:12,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:06:12,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:06:12,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:06:12,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:06:12,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:06:12,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:06:12,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:06:12,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:06:12,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:06:12,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:06:12,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 04:06:12,369 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:06:12,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:06:12,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:06:12,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:06:12,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:06:12,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:06:12,372 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:06:12,372 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:06:12,372 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:06:12,372 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:06:12,373 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:06:12,373 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:06:12,373 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:06:12,373 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:06:12,374 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:06:12,374 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:06:12,374 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:06:12,375 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:06:12,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:06:12,376 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:06:12,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:06:12,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:06:12,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:06:12,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:06:12,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:06:12,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:06:12,377 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:06:12,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:06:12,378 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:06:12,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:06:12,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:06:12,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:06:12,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:12,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:06:12,380 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:06:12,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:06:12,380 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:06:12,380 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:06:12,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:06:12,381 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:06:12,381 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:06:12,381 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_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 [2022-11-03 04:06:12,671 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:06:12,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:06:12,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:06:12,734 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:06:12,736 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:06:12,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2022-11-03 04:06:12,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data/ad160470a/0ab5153d467c4ac2ad7fcfed09c3a85e/FLAGb1c793789 [2022-11-03 04:06:13,411 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:06:13,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2022-11-03 04:06:13,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data/ad160470a/0ab5153d467c4ac2ad7fcfed09c3a85e/FLAGb1c793789 [2022-11-03 04:06:13,795 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data/ad160470a/0ab5153d467c4ac2ad7fcfed09c3a85e [2022-11-03 04:06:13,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:06:13,803 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:06:13,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:13,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:06:13,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:06:13,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:13" (1/1) ... [2022-11-03 04:06:13,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba3732e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:13, skipping insertion in model container [2022-11-03 04:06:13,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:13" (1/1) ... [2022-11-03 04:06:13,826 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:06:13,842 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:06:14,065 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_c48cedd9-7907-4245-819c-eeceacda2b5e/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2022-11-03 04:06:14,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:14,098 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:06:14,112 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_c48cedd9-7907-4245-819c-eeceacda2b5e/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2022-11-03 04:06:14,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:14,131 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:06:14,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14 WrapperNode [2022-11-03 04:06:14,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:14,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:14,134 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:06:14,134 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:06:14,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,176 INFO L138 Inliner]: procedures = 15, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2022-11-03 04:06:14,176 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:14,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:06:14,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:06:14,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:06:14,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:06:14,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:06:14,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:06:14,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:06:14,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (1/1) ... [2022-11-03 04:06:14,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:14,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:14,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:06:14,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:06:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:06:14,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 04:06:14,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:06:14,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:06:14,379 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:06:14,381 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:06:14,596 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:06:14,622 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:06:14,623 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:06:14,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:14 BoogieIcfgContainer [2022-11-03 04:06:14,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:06:14,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:06:14,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:06:14,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:06:14,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:13" (1/3) ... [2022-11-03 04:06:14,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc22349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:14, skipping insertion in model container [2022-11-03 04:06:14,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:14" (2/3) ... [2022-11-03 04:06:14,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc22349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:14, skipping insertion in model container [2022-11-03 04:06:14,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:14" (3/3) ... [2022-11-03 04:06:14,639 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2022-11-03 04:06:14,660 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:06:14,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:06:14,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:06:14,756 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c6c97d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:06:14,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:06:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:14,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 04:06:14,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:14,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 04:06:14,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash 62074611, now seen corresponding path program 1 times [2022-11-03 04:06:14,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:14,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78987546] [2022-11-03 04:06:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:14,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:14,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:06:14,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78987546] [2022-11-03 04:06:14,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78987546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:14,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:14,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:06:14,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063053875] [2022-11-03 04:06:14,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:14,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:06:14,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:06:15,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:06:15,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:06:15,034 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:15,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:15,058 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-11-03 04:06:15,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:06:15,061 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-03 04:06:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:15,071 INFO L225 Difference]: With dead ends: 15 [2022-11-03 04:06:15,071 INFO L226 Difference]: Without dead ends: 7 [2022-11-03 04:06:15,075 INFO L412 NwaCegarLoop]: 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 [2022-11-03 04:06:15,081 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:15,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:06:15,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-03 04:06:15,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-03 04:06:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:15,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-11-03 04:06:15,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-11-03 04:06:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:15,119 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-11-03 04:06:15,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:06:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-11-03 04:06:15,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 04:06:15,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:15,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 04:06:15,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:06:15,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:15,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1900119729, now seen corresponding path program 1 times [2022-11-03 04:06:15,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:15,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980323857] [2022-11-03 04:06:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:15,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:06:15,147 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:06:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:06:15,179 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:06:15,180 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:06:15,182 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:06:15,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:06:15,189 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 04:06:15,194 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:06:15,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:06:15 BoogieIcfgContainer [2022-11-03 04:06:15,218 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:06:15,219 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:06:15,219 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:06:15,219 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:06:15,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:14" (3/4) ... [2022-11-03 04:06:15,223 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 04:06:15,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:06:15,224 INFO L158 Benchmark]: Toolchain (without parser) took 1420.96ms. Allocated memory is still 125.8MB. Free memory was 91.5MB in the beginning and 65.0MB in the end (delta: 26.6MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-11-03 04:06:15,225 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 55.9MB in the beginning and 55.9MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:06:15,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.18ms. Allocated memory is still 125.8MB. Free memory was 91.5MB in the beginning and 102.2MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 04:06:15,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.29ms. Allocated memory is still 125.8MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:06:15,227 INFO L158 Benchmark]: Boogie Preprocessor took 22.77ms. Allocated memory is still 125.8MB. Free memory was 100.6MB in the beginning and 99.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:06:15,228 INFO L158 Benchmark]: RCFGBuilder took 426.48ms. Allocated memory is still 125.8MB. Free memory was 99.5MB in the beginning and 89.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 04:06:15,228 INFO L158 Benchmark]: TraceAbstraction took 587.40ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 65.4MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-03 04:06:15,229 INFO L158 Benchmark]: Witness Printer took 5.14ms. Allocated memory is still 125.8MB. Free memory was 65.4MB in the beginning and 65.0MB in the end (delta: 490.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:06:15,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 55.9MB in the beginning and 55.9MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.18ms. Allocated memory is still 125.8MB. Free memory was 91.5MB in the beginning and 102.2MB in the end (delta: -10.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.29ms. Allocated memory is still 125.8MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.77ms. Allocated memory is still 125.8MB. Free memory was 100.6MB in the beginning and 99.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 426.48ms. Allocated memory is still 125.8MB. Free memory was 99.5MB in the beginning and 89.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 587.40ms. Allocated memory is still 125.8MB. Free memory was 88.0MB in the beginning and 65.4MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 5.14ms. Allocated memory is still 125.8MB. Free memory was 65.4MB in the beginning and 65.0MB in the end (delta: 490.3kB). 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: 14]: 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 37, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; VAL [count=1, exp=1, term=1] [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 VAL [count=2, temp=0] [L37] CALL __VERIFIER_assert( result >= exp ) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 2 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=9occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 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 [2022-11-03 04:06:15,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI --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 cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 04:06:17,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:06:17,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:06:18,049 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:06:18,050 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:06:18,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:06:18,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:06:18,063 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:06:18,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:06:18,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:06:18,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:06:18,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:06:18,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:06:18,083 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:06:18,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:06:18,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:06:18,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:06:18,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:06:18,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:06:18,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:06:18,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:06:18,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:06:18,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:06:18,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:06:18,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:06:18,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:06:18,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:06:18,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:06:18,143 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:06:18,145 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:06:18,145 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:06:18,146 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:06:18,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:06:18,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:06:18,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:06:18,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:06:18,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:06:18,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:06:18,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:06:18,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:06:18,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:06:18,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 04:06:18,200 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:06:18,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:06:18,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:06:18,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:06:18,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:06:18,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:06:18,204 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:06:18,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:06:18,204 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:06:18,205 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:06:18,206 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:06:18,206 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:06:18,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:06:18,208 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 04:06:18,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 04:06:18,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:06:18,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:06:18,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:06:18,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:06:18,210 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:06:18,210 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:06:18,210 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:06:18,210 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 04:06:18,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:06:18,211 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:06:18,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:06:18,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:06:18,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:06:18,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:06:18,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:18,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:06:18,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:06:18,213 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:06:18,213 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:06:18,213 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:06:18,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:06:18,214 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:06:18,214 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:06:18,214 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_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 [2022-11-03 04:06:18,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:06:18,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:06:18,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:06:18,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:06:18,718 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:06:18,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2022-11-03 04:06:18,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data/139e7439d/c07de074fff44d699fb86cef39cfaaeb/FLAGbdca1eb0d [2022-11-03 04:06:19,441 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:06:19,442 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2022-11-03 04:06:19,450 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data/139e7439d/c07de074fff44d699fb86cef39cfaaeb/FLAGbdca1eb0d [2022-11-03 04:06:19,793 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/data/139e7439d/c07de074fff44d699fb86cef39cfaaeb [2022-11-03 04:06:19,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:06:19,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:06:19,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:19,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:06:19,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:06:19,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:19" (1/1) ... [2022-11-03 04:06:19,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30fb78c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:19, skipping insertion in model container [2022-11-03 04:06:19,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:06:19" (1/1) ... [2022-11-03 04:06:19,816 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:06:19,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:06:20,010 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_c48cedd9-7907-4245-819c-eeceacda2b5e/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2022-11-03 04:06:20,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:20,038 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:06:20,082 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_c48cedd9-7907-4245-819c-eeceacda2b5e/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2022-11-03 04:06:20,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:20,128 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:06:20,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20 WrapperNode [2022-11-03 04:06:20,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:20,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:20,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:06:20,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:06:20,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,171 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2022-11-03 04:06:20,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:20,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:06:20,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:06:20,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:06:20,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,220 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:06:20,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:06:20,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:06:20,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:06:20,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (1/1) ... [2022-11-03 04:06:20,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:20,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:20,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:06:20,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:06:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 04:06:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 04:06:20,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:06:20,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:06:20,415 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:06:20,419 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:06:23,146 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:06:23,153 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:06:23,153 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:06:23,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:23 BoogieIcfgContainer [2022-11-03 04:06:23,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:06:23,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:06:23,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:06:23,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:06:23,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:06:19" (1/3) ... [2022-11-03 04:06:23,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9ca754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:23, skipping insertion in model container [2022-11-03 04:06:23,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:20" (2/3) ... [2022-11-03 04:06:23,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a9ca754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:23, skipping insertion in model container [2022-11-03 04:06:23,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:23" (3/3) ... [2022-11-03 04:06:23,172 INFO L112 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2022-11-03 04:06:23,188 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:06:23,188 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:06:23,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:06:23,245 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3464caf5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:06:23,246 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:06:23,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2022-11-03 04:06:23,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 04:06:23,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:23,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 04:06:23,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:23,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:23,268 INFO L85 PathProgramCache]: Analyzing trace with hash 889906919, now seen corresponding path program 1 times [2022-11-03 04:06:23,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:06:23,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1951087264] [2022-11-03 04:06:23,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:23,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:06:23,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:06:23,291 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:06:23,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:06:23,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:23,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 04:06:23,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:23,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:06:23,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:06:23,750 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:06:23,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1951087264] [2022-11-03 04:06:23,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1951087264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:06:23,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:06:23,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:06:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403454622] [2022-11-03 04:06:23,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:06:23,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:06:23,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:06:23,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:06:23,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:06:23,816 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2022-11-03 04:06:23,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:23,834 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-11-03 04:06:23,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:06:23,837 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 [2022-11-03 04:06:23,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:23,851 INFO L225 Difference]: With dead ends: 20 [2022-11-03 04:06:23,851 INFO L226 Difference]: Without dead ends: 8 [2022-11-03 04:06:23,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:06:23,863 INFO L413 NwaCegarLoop]: 12 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, 12 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 [2022-11-03 04:06:23,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:06:23,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-03 04:06:23,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-03 04:06:23,904 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) [2022-11-03 04:06:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-03 04:06:23,906 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-03 04:06:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:23,907 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-03 04:06:23,907 INFO L496 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) [2022-11-03 04:06:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-03 04:06:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 04:06:23,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:23,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:06:23,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:06:24,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:06:24,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:24,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1810664400, now seen corresponding path program 1 times [2022-11-03 04:06:24,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:06:24,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988685332] [2022-11-03 04:06:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:24,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:06:24,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:06:24,133 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:06:24,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:06:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:06:24,758 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:06:25,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:06:25,507 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-03 04:06:25,507 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:06:25,510 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:06:25,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:06:25,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:06:25,717 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 04:06:25,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:06:25,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:06:25 BoogieIcfgContainer [2022-11-03 04:06:25,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:06:25,757 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:06:25,757 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:06:25,757 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:06:25,758 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:23" (3/4) ... [2022-11-03 04:06:25,760 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 04:06:25,801 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 04:06:25,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:06:25,802 INFO L158 Benchmark]: Toolchain (without parser) took 6004.27ms. Allocated memory is still 86.0MB. Free memory was 64.1MB in the beginning and 54.8MB in the end (delta: 9.3MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-11-03 04:06:25,802 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 52.4MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:06:25,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.42ms. Allocated memory is still 86.0MB. Free memory was 63.9MB in the beginning and 69.6MB in the end (delta: -5.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 04:06:25,804 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.49ms. Allocated memory is still 86.0MB. Free memory was 69.3MB in the beginning and 67.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:06:25,804 INFO L158 Benchmark]: Boogie Preprocessor took 58.14ms. Allocated memory is still 86.0MB. Free memory was 67.9MB in the beginning and 66.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:06:25,805 INFO L158 Benchmark]: RCFGBuilder took 2924.02ms. Allocated memory is still 86.0MB. Free memory was 66.5MB in the beginning and 56.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 04:06:25,806 INFO L158 Benchmark]: TraceAbstraction took 2597.43ms. Allocated memory is still 86.0MB. Free memory was 56.2MB in the beginning and 56.9MB in the end (delta: -699.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:06:25,806 INFO L158 Benchmark]: Witness Printer took 44.38ms. Allocated memory is still 86.0MB. Free memory was 56.9MB in the beginning and 54.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:06:25,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 52.4MB. Free memory is still 33.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.42ms. Allocated memory is still 86.0MB. Free memory was 63.9MB in the beginning and 69.6MB in the end (delta: -5.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.49ms. Allocated memory is still 86.0MB. Free memory was 69.3MB in the beginning and 67.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 58.14ms. Allocated memory is still 86.0MB. Free memory was 67.9MB in the beginning and 66.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2924.02ms. Allocated memory is still 86.0MB. Free memory was 66.5MB in the beginning and 56.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2597.43ms. Allocated memory is still 86.0MB. Free memory was 56.2MB in the beginning and 56.9MB in the end (delta: -699.6kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 44.38ms. Allocated memory is still 86.0MB. Free memory was 56.9MB in the beginning and 54.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; VAL [count=1, exp=1.0, result=-0.00000000000000000010842021724855044, term=1.0, x=18446744073709552000] [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 VAL [count=2, exp=18446744073709552000, result=-0.00000000000000000010842021724855044, temp=0, term=18446744073709552000, x=18446744073709552000] [L37] CALL __VERIFIER_assert( result >= exp ) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 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, 12 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 0.9s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 24 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2022-11-03 04:06:25,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c48cedd9-7907-4245-819c-eeceacda2b5e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE