./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4 --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 Kojak --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 11d6d848444c2f9afc2eba3aace7d6b72c4d182e1953661ba8811794c092f478 --- 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-2329fc7 [2022-12-14 16:23:03,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 16:23:03,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 16:23:03,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 16:23:03,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 16:23:03,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 16:23:03,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 16:23:03,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 16:23:03,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 16:23:03,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 16:23:03,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 16:23:03,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 16:23:03,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 16:23:03,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 16:23:03,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 16:23:03,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 16:23:03,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 16:23:03,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 16:23:03,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 16:23:03,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 16:23:03,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 16:23:03,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 16:23:03,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 16:23:03,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 16:23:03,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 16:23:03,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 16:23:03,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 16:23:03,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 16:23:03,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 16:23:03,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 16:23:03,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 16:23:03,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 16:23:03,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 16:23:03,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 16:23:03,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 16:23:03,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 16:23:03,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 16:23:03,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 16:23:03,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 16:23:03,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 16:23:03,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 16:23:03,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/config/svcomp-Reach-32bit-Kojak_Default.epf [2022-12-14 16:23:03,224 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 16:23:03,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 16:23:03,225 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 16:23:03,226 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-12-14 16:23:03,227 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 16:23:03,227 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 16:23:03,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 16:23:03,227 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 16:23:03,228 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 16:23:03,228 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 16:23:03,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 16:23:03,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 16:23:03,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 16:23:03,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 16:23:03,229 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 16:23:03,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 16:23:03,229 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 16:23:03,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 16:23:03,229 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-12-14 16:23:03,229 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-12-14 16:23:03,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 16:23:03,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 16:23:03,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 16:23:03,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 16:23:03,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 16:23:03,230 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-12-14 16:23:03,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 16:23:03,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 16:23:03,231 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_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11d6d848444c2f9afc2eba3aace7d6b72c4d182e1953661ba8811794c092f478 [2022-12-14 16:23:03,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 16:23:03,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 16:23:03,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 16:23:03,440 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 16:23:03,440 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 16:23:03,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/../../sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2022-12-14 16:23:06,060 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 16:23:06,216 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 16:23:06,216 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c [2022-12-14 16:23:06,222 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/data/5a7d5f24f/fc4c1c99d30244dca10c48d3a8bdb3db/FLAG9d24364ce [2022-12-14 16:23:06,235 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/data/5a7d5f24f/fc4c1c99d30244dca10c48d3a8bdb3db [2022-12-14 16:23:06,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 16:23:06,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 16:23:06,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 16:23:06,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 16:23:06,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 16:23:06,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a987110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06, skipping insertion in model container [2022-12-14 16:23:06,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 16:23:06,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 16:23:06,407 WARN L237 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_7a8ee0fb-fd4f-4763-a299-23954cdfef68/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c[327,340] [2022-12-14 16:23:06,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:23:06,428 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 16:23:06,440 WARN L237 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_7a8ee0fb-fd4f-4763-a299-23954cdfef68/sv-benchmarks/c/loop-acceleration/underapprox_1-1.c[327,340] [2022-12-14 16:23:06,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 16:23:06,455 INFO L208 MainTranslator]: Completed translation [2022-12-14 16:23:06,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06 WrapperNode [2022-12-14 16:23:06,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 16:23:06,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 16:23:06,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 16:23:06,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 16:23:06,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,485 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-12-14 16:23:06,486 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 16:23:06,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 16:23:06,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 16:23:06,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 16:23:06,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,502 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 16:23:06,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 16:23:06,505 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 16:23:06,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 16:23:06,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-12-14 16:23:06,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/z3 [2022-12-14 16:23:06,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-12-14 16:23:06,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-12-14 16:23:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 16:23:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 16:23:06,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 16:23:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 16:23:06,629 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 16:23:06,630 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 16:23:06,697 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 16:23:06,719 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 16:23:06,719 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 16:23:06,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:23:06 BoogieIcfgContainer [2022-12-14 16:23:06,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 16:23:06,722 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-12-14 16:23:06,722 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-12-14 16:23:06,731 INFO L275 PluginConnector]: CodeCheck initialized [2022-12-14 16:23:06,731 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:23:06" (1/1) ... [2022-12-14 16:23:06,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 16:23:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 16:23:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 7 states and 8 transitions. [2022-12-14 16:23:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2022-12-14 16:23:06,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 16:23:06,781 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 16:23:06,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:23:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:23:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:23:06,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 16:23:06,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-12-14 16:23:06,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-12-14 16:23:06,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 16:23:06,974 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 16:23:06,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:23:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:23:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:23:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 16:23:07,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-12-14 16:23:07,153 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-12-14 16:23:07,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 16:23:07,153 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 16:23:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:23:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:23:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:23:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 16:23:07,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-12-14 16:23:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-12-14 16:23:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 16:23:07,343 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 16:23:07,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:23:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:23:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:23:07,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 16:23:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-12-14 16:23:07,515 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-12-14 16:23:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 16:23:07,515 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 16:23:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:23:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:23:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:23:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 16:23:07,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-12-14 16:23:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-12-14 16:23:07,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 16:23:07,671 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 16:23:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:23:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 16:23:07,776 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 16:23:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-12-14 16:23:07,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-12-14 16:23:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-12-14 16:23:07,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 16:23:07,840 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-12-14 16:23:07,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 16:23:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:23:07,854 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 16:23:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:23:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:23:07,896 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 16:23:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 16:23:07,912 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 7 iterations. [2022-12-14 16:23:07,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 14.12 04:23:07 ImpRootNode [2022-12-14 16:23:07,935 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-12-14 16:23:07,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 16:23:07,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 16:23:07,936 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 16:23:07,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 04:23:06" (3/4) ... [2022-12-14 16:23:07,938 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-14 16:23:07,979 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/witness.graphml [2022-12-14 16:23:07,979 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 16:23:07,980 INFO L158 Benchmark]: Toolchain (without parser) took 1740.84ms. Allocated memory is still 172.0MB. Free memory was 131.0MB in the beginning and 77.9MB in the end (delta: 53.0MB). Peak memory consumption was 55.4MB. Max. memory is 16.1GB. [2022-12-14 16:23:07,981 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:23:07,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.40ms. Allocated memory is still 172.0MB. Free memory was 131.0MB in the beginning and 120.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 16:23:07,982 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.49ms. Allocated memory is still 172.0MB. Free memory was 120.9MB in the beginning and 119.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 16:23:07,983 INFO L158 Benchmark]: Boogie Preprocessor took 17.50ms. Allocated memory is still 172.0MB. Free memory was 119.8MB in the beginning and 118.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:23:07,984 INFO L158 Benchmark]: RCFGBuilder took 216.45ms. Allocated memory is still 172.0MB. Free memory was 118.3MB in the beginning and 108.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 16:23:07,984 INFO L158 Benchmark]: CodeCheck took 1213.52ms. Allocated memory is still 172.0MB. Free memory was 108.5MB in the beginning and 80.0MB in the end (delta: 28.4MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2022-12-14 16:23:07,985 INFO L158 Benchmark]: Witness Printer took 43.64ms. Allocated memory is still 172.0MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 16:23:07,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 7, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 84 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 18 mSDtfsCounter, 84 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 250 GetRequests, 208 SyntacticMatches, 20 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 0/35 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L13] unsigned int x = 0; [L14] unsigned int y = 1; VAL [x=0, y=1] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=1, y=2] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=2, y=4] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=3, y=8] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=4, y=16] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=5, y=32] [L16] COND TRUE x < 6 [L17] x++ [L18] y *= 2 VAL [x=6, y=64] [L16] COND FALSE !(x < 6) [L21] CALL __VERIFIER_assert(y != 64) [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.40ms. Allocated memory is still 172.0MB. Free memory was 131.0MB in the beginning and 120.9MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.49ms. Allocated memory is still 172.0MB. Free memory was 120.9MB in the beginning and 119.8MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.50ms. Allocated memory is still 172.0MB. Free memory was 119.8MB in the beginning and 118.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 216.45ms. Allocated memory is still 172.0MB. Free memory was 118.3MB in the beginning and 108.5MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 1213.52ms. Allocated memory is still 172.0MB. Free memory was 108.5MB in the beginning and 80.0MB in the end (delta: 28.4MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. * Witness Printer took 43.64ms. Allocated memory is still 172.0MB. Free memory was 80.0MB in the beginning and 77.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be incorrect! [2022-12-14 16:23:08,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a8ee0fb-fd4f-4763-a299-23954cdfef68/bin/ukojak-rkRKPMF4O4/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (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