./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ --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 079768eb2ce141267a1411f9330cb4d0cef674bf78865555f3130b47379d643a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 23:21:34,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 23:21:34,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 23:21:34,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 23:21:34,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 23:21:34,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 23:21:34,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 23:21:34,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 23:21:34,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 23:21:34,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 23:21:34,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 23:21:34,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 23:21:34,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 23:21:34,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 23:21:34,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 23:21:34,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 23:21:34,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 23:21:34,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 23:21:34,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 23:21:34,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 23:21:34,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 23:21:34,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 23:21:34,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 23:21:34,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 23:21:34,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 23:21:34,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 23:21:34,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 23:21:34,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 23:21:34,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 23:21:34,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 23:21:34,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 23:21:34,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 23:21:34,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 23:21:34,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 23:21:34,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 23:21:34,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 23:21:34,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 23:21:34,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 23:21:34,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 23:21:34,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 23:21:34,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 23:21:34,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-22 23:21:34,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 23:21:34,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 23:21:34,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-22 23:21:34,216 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-22 23:21:34,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 23:21:34,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 23:21:34,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 23:21:34,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 23:21:34,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 23:21:34,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 23:21:34,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 23:21:34,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 23:21:34,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 23:21:34,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 23:21:34,229 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 23:21:34,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 23:21:34,229 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 23:21:34,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 23:21:34,230 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-22 23:21:34,230 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-22 23:21:34,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 23:21:34,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:21:34,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 23:21:34,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 23:21:34,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 23:21:34,232 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-22 23:21:34,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 23:21:34,232 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 23:21:34,233 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_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 079768eb2ce141267a1411f9330cb4d0cef674bf78865555f3130b47379d643a [2021-11-22 23:21:34,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 23:21:34,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 23:21:34,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 23:21:34,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 23:21:34,658 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 23:21:34,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-11-22 23:21:34,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/data/abeb21548/a108589dd1ff4f5cb2f533fbd324ad28/FLAG0d2f0ddbd [2021-11-22 23:21:35,379 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 23:21:35,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c [2021-11-22 23:21:35,388 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/data/abeb21548/a108589dd1ff4f5cb2f533fbd324ad28/FLAG0d2f0ddbd [2021-11-22 23:21:35,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/data/abeb21548/a108589dd1ff4f5cb2f533fbd324ad28 [2021-11-22 23:21:35,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 23:21:35,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 23:21:35,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 23:21:35,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 23:21:35,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 23:21:35,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:21:35" (1/1) ... [2021-11-22 23:21:35,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6b5961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:35, skipping insertion in model container [2021-11-22 23:21:35,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:21:35" (1/1) ... [2021-11-22 23:21:35,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 23:21:35,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 23:21:35,920 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_b537d7de-e530-49d8-bfea-606cbe8abe32/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] [2021-11-22 23:21:35,964 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:21:35,977 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 23:21:36,000 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_b537d7de-e530-49d8-bfea-606cbe8abe32/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound1.c[576,589] [2021-11-22 23:21:36,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 23:21:36,026 INFO L208 MainTranslator]: Completed translation [2021-11-22 23:21:36,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36 WrapperNode [2021-11-22 23:21:36,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 23:21:36,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 23:21:36,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 23:21:36,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 23:21:36,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,069 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2021-11-22 23:21:36,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 23:21:36,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 23:21:36,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 23:21:36,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 23:21:36,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,093 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 23:21:36,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 23:21:36,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 23:21:36,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 23:21:36,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-22 23:21:36,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-22 23:21:36,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-22 23:21:36,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-22 23:21:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 23:21:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 23:21:36,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 23:21:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 23:21:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-22 23:21:36,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-22 23:21:36,315 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 23:21:36,317 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 23:21:36,565 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 23:21:36,602 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 23:21:36,602 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 23:21:36,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:21:36 BoogieIcfgContainer [2021-11-22 23:21:36,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 23:21:36,606 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-22 23:21:36,606 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-22 23:21:36,619 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-22 23:21:36,619 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:21:36" (1/1) ... [2021-11-22 23:21:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 23:21:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:36,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 24 states and 36 transitions. [2021-11-22 23:21:36,731 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 36 transitions. [2021-11-22 23:21:36,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 23:21:36,745 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:36,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:21:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 24 states and 34 transitions. [2021-11-22 23:21:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2021-11-22 23:21:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 23:21:36,975 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:36,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:21:37,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:37,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 26 states and 36 transitions. [2021-11-22 23:21:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 36 transitions. [2021-11-22 23:21:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 23:21:37,073 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:37,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:37,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 23:21:37,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:21:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:21:37,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:37,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 31 states and 50 transitions. [2021-11-22 23:21:37,545 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 50 transitions. [2021-11-22 23:21:37,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 23:21:37,546 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:37,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:37,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 23:21:37,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:21:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 23:21:38,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:38,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 35 states and 58 transitions. [2021-11-22 23:21:38,237 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 58 transitions. [2021-11-22 23:21:38,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 23:21:38,239 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:38,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:38,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 23:21:38,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:21:38,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-22 23:21:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:38,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 37 states and 63 transitions. [2021-11-22 23:21:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 63 transitions. [2021-11-22 23:21:38,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 23:21:38,810 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:38,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:38,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 23:21:38,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:21:38,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 23:21:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:40,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 48 states and 97 transitions. [2021-11-22 23:21:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 97 transitions. [2021-11-22 23:21:40,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 23:21:40,205 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:40,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:40,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 23:21:40,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:21:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 23:21:40,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:40,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 27 states and 34 transitions. [2021-11-22 23:21:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-11-22 23:21:40,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 23:21:40,760 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-22 23:21:40,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 23:21:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 23:21:40,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 23:21:40,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 23:21:41,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-22 23:21:42,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-22 23:21:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 22 states and 25 transitions. [2021-11-22 23:21:42,317 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-22 23:21:42,317 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 23:21:42,318 WARN L419 CodeCheckObserver]: This Program is SAFE, Check terminated with 9 iterations. [2021-11-22 23:21:42,328 INFO L754 CodeCheckObserver]: All specifications hold 1 specifications checked. All of them hold [2021-11-22 23:21:42,418 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-22 23:21:42,422 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-22 23:21:42,422 INFO L560 CodeCheckObserver]: Invariant with dag size 1 [2021-11-22 23:21:42,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 22.11 11:21:42 ImpRootNode [2021-11-22 23:21:42,423 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-22 23:21:42,423 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 23:21:42,423 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 23:21:42,424 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 23:21:42,424 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:21:36" (3/4) ... [2021-11-22 23:21:42,428 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 23:21:42,435 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-22 23:21:42,441 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-11-22 23:21:42,442 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-22 23:21:42,442 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-22 23:21:42,442 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 23:21:42,519 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-22 23:21:42,519 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 23:21:42,520 INFO L158 Benchmark]: Toolchain (without parser) took 6803.32ms. Allocated memory was 100.7MB in the beginning and 169.9MB in the end (delta: 69.2MB). Free memory was 72.6MB in the beginning and 125.7MB in the end (delta: -53.1MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-22 23:21:42,521 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 100.7MB. Free memory is still 54.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 23:21:42,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.72ms. Allocated memory was 100.7MB in the beginning and 140.5MB in the end (delta: 39.8MB). Free memory was 72.3MB in the beginning and 116.8MB in the end (delta: -44.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 23:21:42,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.64ms. Allocated memory is still 140.5MB. Free memory was 116.8MB in the beginning and 114.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 23:21:42,523 INFO L158 Benchmark]: Boogie Preprocessor took 27.05ms. Allocated memory is still 140.5MB. Free memory was 114.7MB in the beginning and 113.8MB in the end (delta: 925.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 23:21:42,524 INFO L158 Benchmark]: RCFGBuilder took 507.22ms. Allocated memory is still 140.5MB. Free memory was 113.8MB in the beginning and 103.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 23:21:42,525 INFO L158 Benchmark]: CodeCheck took 5816.45ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 103.3MB in the beginning and 128.8MB in the end (delta: -25.5MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. [2021-11-22 23:21:42,525 INFO L158 Benchmark]: Witness Printer took 96.07ms. Allocated memory is still 169.9MB. Free memory was 128.8MB in the beginning and 125.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 23:21:42,534 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 2 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 9, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 355 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 308 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 56 mSDsCounter, 232 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 696 IncrementalHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 232 mSolverCounterUnsat, 252 mSDtfsCounter, 696 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1165 GetRequests, 1040 SyntacticMatches, 15 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4621 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 320 SizeOfPredicates, 8 NumberOfNonLiveVariables, 478 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 36/39 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 100.7MB. Free memory is still 54.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.72ms. Allocated memory was 100.7MB in the beginning and 140.5MB in the end (delta: 39.8MB). Free memory was 72.3MB in the beginning and 116.8MB in the end (delta: -44.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.64ms. Allocated memory is still 140.5MB. Free memory was 116.8MB in the beginning and 114.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.05ms. Allocated memory is still 140.5MB. Free memory was 114.7MB in the beginning and 113.8MB in the end (delta: 925.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 507.22ms. Allocated memory is still 140.5MB. Free memory was 113.8MB in the beginning and 103.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * CodeCheck took 5816.45ms. Allocated memory was 140.5MB in the beginning and 169.9MB in the end (delta: 29.4MB). Free memory was 103.3MB in the beginning and 128.8MB in the end (delta: -25.5MB). Peak memory consumption was 4.5MB. Max. memory is 16.1GB. * Witness Printer took 96.07ms. Allocated memory is still 169.9MB. Free memory was 128.8MB in the beginning and 125.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. RESULT: Ultimate proved your program to be correct! [2021-11-22 23:21:42,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b537d7de-e530-49d8-bfea-606cbe8abe32/bin/ukojak-LBtLqBUTdQ/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 Result: TRUE