./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-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_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/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_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/config/KojakReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/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_2968ee01-5e9c-4a23-ad6b-5a415248ebec/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 93288430628c47f5b29fea9bae87a960ba351b35fa235fa55fc142299145054c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 00:24:51,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 00:24:51,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 00:24:51,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 00:24:51,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 00:24:51,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 00:24:51,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 00:24:51,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 00:24:51,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 00:24:51,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 00:24:51,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 00:24:51,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 00:24:51,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 00:24:51,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 00:24:51,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 00:24:51,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 00:24:51,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 00:24:51,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 00:24:51,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 00:24:51,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 00:24:51,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 00:24:51,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 00:24:51,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 00:24:51,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 00:24:51,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 00:24:51,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 00:24:51,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 00:24:51,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 00:24:51,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 00:24:51,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 00:24:51,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 00:24:51,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 00:24:51,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 00:24:51,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 00:24:51,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 00:24:51,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 00:24:51,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 00:24:51,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 00:24:51,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 00:24:51,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 00:24:51,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 00:24:51,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/config/svcomp-Reach-32bit-Kojak_Default.epf [2021-11-23 00:24:51,894 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 00:24:51,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 00:24:51,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 00:24:51,896 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2021-11-23 00:24:51,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 00:24:51,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 00:24:51,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 00:24:51,897 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 00:24:51,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 00:24:51,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 00:24:51,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 00:24:51,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 00:24:51,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 00:24:51,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 00:24:51,906 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 00:24:51,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 00:24:51,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 00:24:51,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 00:24:51,907 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2021-11-23 00:24:51,907 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2021-11-23 00:24:51,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 00:24:51,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:24:51,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 00:24:51,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 00:24:51,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 00:24:51,909 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2021-11-23 00:24:51,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 00:24:51,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 00:24:51,909 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_2968ee01-5e9c-4a23-ad6b-5a415248ebec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93288430628c47f5b29fea9bae87a960ba351b35fa235fa55fc142299145054c [2021-11-23 00:24:52,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 00:24:52,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 00:24:52,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 00:24:52,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 00:24:52,172 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 00:24:52,174 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2021-11-23 00:24:52,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/data/45f044fa0/88e51965f0214a8b9681b0079e73c3ca/FLAGa9599aaff [2021-11-23 00:24:52,683 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 00:24:52,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c [2021-11-23 00:24:52,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/data/45f044fa0/88e51965f0214a8b9681b0079e73c3ca/FLAGa9599aaff [2021-11-23 00:24:53,053 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/data/45f044fa0/88e51965f0214a8b9681b0079e73c3ca [2021-11-23 00:24:53,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 00:24:53,057 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 00:24:53,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 00:24:53,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 00:24:53,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 00:24:53,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@789a8c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53, skipping insertion in model container [2021-11-23 00:24:53,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 00:24:53,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 00:24:53,266 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_2968ee01-5e9c-4a23-ad6b-5a415248ebec/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2021-11-23 00:24:53,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:24:53,291 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 00:24:53,303 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_2968ee01-5e9c-4a23-ad6b-5a415248ebec/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound1.c[458,471] [2021-11-23 00:24:53,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 00:24:53,330 INFO L208 MainTranslator]: Completed translation [2021-11-23 00:24:53,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53 WrapperNode [2021-11-23 00:24:53,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 00:24:53,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 00:24:53,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 00:24:53,336 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 00:24:53,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,377 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-11-23 00:24:53,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 00:24:53,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 00:24:53,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 00:24:53,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 00:24:53,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 00:24:53,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 00:24:53,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 00:24:53,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 00:24:53,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2021-11-23 00:24:53,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/z3 [2021-11-23 00:24:53,453 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2021-11-23 00:24:53,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2021-11-23 00:24:53,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 00:24:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 00:24:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 00:24:53,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 00:24:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 00:24:53,503 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 00:24:53,568 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 00:24:53,571 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 00:24:53,694 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 00:24:53,725 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 00:24:53,725 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 00:24:53,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:24:53 BoogieIcfgContainer [2021-11-23 00:24:53,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 00:24:53,741 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2021-11-23 00:24:53,741 INFO L271 PluginConnector]: Initializing CodeCheck... [2021-11-23 00:24:53,770 INFO L275 PluginConnector]: CodeCheck initialized [2021-11-23 00:24:53,770 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:24:53" (1/1) ... [2021-11-23 00:24:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 00:24:53,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:24:53,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 15 states and 20 transitions. [2021-11-23 00:24:53,854 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2021-11-23 00:24:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 00:24:53,856 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:24:53,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:24:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:24:53,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:24:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:24:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 15 states and 18 transitions. [2021-11-23 00:24:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2021-11-23 00:24:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 00:24:54,013 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:24:54,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:24:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:24:54,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:24:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:24:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 17 states and 20 transitions. [2021-11-23 00:24:54,132 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-23 00:24:54,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 00:24:54,133 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:24:54,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:24:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:24:54,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 00:24:54,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:24:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:24:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:24:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 22 states and 30 transitions. [2021-11-23 00:24:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-11-23 00:24:54,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 00:24:54,759 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:24:54,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:24:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:24:54,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:24:54,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:39:02,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:39:02,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:39:02,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 26 states and 39 transitions. [2021-11-23 00:39:02,716 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 39 transitions. [2021-11-23 00:39:02,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 00:39:02,717 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:39:02,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:39:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:39:02,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 00:39:02,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:39:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:39:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:39:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 29 states and 44 transitions. [2021-11-23 00:39:03,434 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 44 transitions. [2021-11-23 00:39:03,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 00:39:03,435 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:39:03,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:39:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:39:03,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 00:39:03,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:39:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 00:39:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:39:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 25 states and 33 transitions. [2021-11-23 00:39:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-23 00:39:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 00:39:04,283 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:39:04,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:39:04,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 00:39:04,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 00:39:04,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 00:39:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 00:39:04,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2021-11-23 00:39:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 27 states and 41 transitions. [2021-11-23 00:39:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 41 transitions. [2021-11-23 00:39:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 00:39:04,485 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2021-11-23 00:39:04,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 00:39:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:39:04,515 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 00:39:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 00:39:04,541 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 8 iterations. [2021-11-23 00:39:04,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 23.11 12:39:04 ImpRootNode [2021-11-23 00:39:04,573 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2021-11-23 00:39:04,574 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 00:39:04,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 00:39:04,574 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 00:39:04,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:24:53" (3/4) ... [2021-11-23 00:39:04,588 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 00:39:04,696 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/bin/ukojak-LBtLqBUTdQ/witness.graphml [2021-11-23 00:39:04,697 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 00:39:04,702 INFO L158 Benchmark]: Toolchain (without parser) took 851640.17ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 89.1MB in the beginning and 111.9MB in the end (delta: -22.8MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2021-11-23 00:39:04,711 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:39:04,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.63ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 96.0MB in the end (delta: -7.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 00:39:04,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.62ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 94.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:39:04,714 INFO L158 Benchmark]: Boogie Preprocessor took 39.06ms. Allocated memory is still 121.6MB. Free memory was 94.5MB in the beginning and 93.6MB in the end (delta: 928.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:39:04,715 INFO L158 Benchmark]: RCFGBuilder took 321.42ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 83.6MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 00:39:04,716 INFO L158 Benchmark]: CodeCheck took 850832.49ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 83.2MB in the beginning and 114.0MB in the end (delta: -30.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 00:39:04,719 INFO L158 Benchmark]: Witness Printer took 123.27ms. Allocated memory is still 146.8MB. Free memory was 114.0MB in the beginning and 111.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 00:39:04,724 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, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 850.8s, OverallIterations: 8, 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, 190 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 169 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 49 mSDsCounter, 172 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 462 IncrementalHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 172 mSolverCounterUnsat, 120 mSDtfsCounter, 462 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 779 GetRequests, 695 SyntacticMatches, 14 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1558 ImplicationChecksByTransitivity, 849.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 848.2s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 273 SizeOfPredicates, 6 NumberOfNonLiveVariables, 341 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 15/19 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: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [c=0, counter=0, k=2, x=0, y=0] [L28] EXPR counter++ VAL [c=0, counter=1, counter++=0, k=2, x=0, y=0] [L28] COND TRUE counter++<1 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=0, counter=1, k=2, x=0, y=0] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=1, counter=1, k=2, x=1, y=1] [L28] EXPR counter++ VAL [c=1, counter=2, counter++=1, k=2, x=1, y=1] [L28] COND FALSE !(counter++<1) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=2] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=1, counter=2, k=2, x=1, y=1] [L40] CALL __VERIFIER_assert(k*y == y*y) VAL [\old(cond)=0, counter=2] [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L12] reach_error() VAL [\old(cond)=0, cond=0, counter=2] * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 48.8MB in the beginning and 48.8MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.63ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 96.0MB in the end (delta: -7.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.62ms. Allocated memory is still 121.6MB. Free memory was 96.0MB in the beginning and 94.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.06ms. Allocated memory is still 121.6MB. Free memory was 94.5MB in the beginning and 93.6MB in the end (delta: 928.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 321.42ms. Allocated memory is still 121.6MB. Free memory was 93.2MB in the beginning and 83.6MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * CodeCheck took 850832.49ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 83.2MB in the beginning and 114.0MB in the end (delta: -30.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 123.27ms. Allocated memory is still 146.8MB. Free memory was 114.0MB in the beginning and 111.9MB 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! [2021-11-23 00:39:04,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2968ee01-5e9c-4a23-ad6b-5a415248ebec/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE