./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/linear-inequality-inv-b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/config/KojakReach.xml -i ../../sv-benchmarks/c/loop-invariants/linear-inequality-inv-b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak --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 6b7e4344a1b47d68a491e369e16c1769051091e9 ............................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 04:35:50,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 04:35:50,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 04:35:50,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 04:35:50,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 04:35:50,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 04:35:50,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 04:35:50,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 04:35:50,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 04:35:50,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 04:35:50,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 04:35:50,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 04:35:50,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 04:35:50,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 04:35:50,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 04:35:50,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 04:35:50,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 04:35:50,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 04:35:50,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 04:35:50,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 04:35:50,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 04:35:50,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 04:35:50,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 04:35:50,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 04:35:50,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 04:35:50,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 04:35:50,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 04:35:50,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 04:35:50,824 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 04:35:50,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 04:35:50,826 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 04:35:50,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 04:35:50,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 04:35:50,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 04:35:50,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 04:35:50,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 04:35:50,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 04:35:50,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 04:35:50,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 04:35:50,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 04:35:50,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 04:35:50,838 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/config/svcomp-Reach-32bit-Kojak_Default.epf [2020-11-28 04:35:50,876 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 04:35:50,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 04:35:50,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 04:35:50,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2020-11-28 04:35:50,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 04:35:50,879 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 04:35:50,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 04:35:50,879 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 04:35:50,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 04:35:50,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 04:35:50,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 04:35:50,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 04:35:50,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 04:35:50,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 04:35:50,882 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 04:35:50,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 04:35:50,882 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 04:35:50,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 04:35:50,883 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2020-11-28 04:35:50,883 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2020-11-28 04:35:50,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 04:35:50,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 04:35:50,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:35:50,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 04:35:50,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 04:35:50,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 04:35:50,885 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2020-11-28 04:35:50,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 04:35:50,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 04:35:50,886 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-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b7e4344a1b47d68a491e369e16c1769051091e9 [2020-11-28 04:35:51,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 04:35:51,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 04:35:51,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 04:35:51,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 04:35:51,157 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 04:35:51,158 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/../../sv-benchmarks/c/loop-invariants/linear-inequality-inv-b.c [2020-11-28 04:35:51,239 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/data/3cdba0419/fe052def82344c8cbae99a2c51b8aece/FLAG5789a1239 [2020-11-28 04:35:51,652 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 04:35:51,653 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/sv-benchmarks/c/loop-invariants/linear-inequality-inv-b.c [2020-11-28 04:35:51,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/data/3cdba0419/fe052def82344c8cbae99a2c51b8aece/FLAG5789a1239 [2020-11-28 04:35:52,091 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/data/3cdba0419/fe052def82344c8cbae99a2c51b8aece [2020-11-28 04:35:52,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 04:35:52,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 04:35:52,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 04:35:52,100 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 04:35:52,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 04:35:52,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d266c46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52, skipping insertion in model container [2020-11-28 04:35:52,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 04:35:52,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 04:35:52,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:35:52,384 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 04:35:52,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 04:35:52,426 INFO L208 MainTranslator]: Completed translation [2020-11-28 04:35:52,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52 WrapperNode [2020-11-28 04:35:52,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 04:35:52,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 04:35:52,430 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 04:35:52,430 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 04:35:52,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,461 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 04:35:52,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 04:35:52,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 04:35:52,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 04:35:52,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... [2020-11-28 04:35:52,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 04:35:52,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 04:35:52,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 04:35:52,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 04:35:52,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2020-11-28 04:35:52,552 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-28 04:35:52,552 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-28 04:35:52,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 04:35:52,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 04:35:52,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 04:35:52,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 04:35:53,009 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 04:35:53,009 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 04:35:53,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:53 BoogieIcfgContainer [2020-11-28 04:35:53,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 04:35:53,013 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2020-11-28 04:35:53,013 INFO L271 PluginConnector]: Initializing CodeCheck... [2020-11-28 04:35:53,026 INFO L275 PluginConnector]: CodeCheck initialized [2020-11-28 04:35:53,026 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:53" (1/1) ... [2020-11-28 04:35:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 04:35:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:35:53,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 14 states and 18 transitions. [2020-11-28 04:35:53,094 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2020-11-28 04:35:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 04:35:53,096 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:35:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:35:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:35:53,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:35:53,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 12 states and 14 transitions. [2020-11-28 04:35:53,455 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-28 04:35:53,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 04:35:53,455 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:35:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 04:35:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 04:35:53,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2020-11-28 04:35:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 14 states and 18 transitions. [2020-11-28 04:35:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 18 transitions. [2020-11-28 04:35:53,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 04:35:53,923 INFO L428 CodeCheckObserver]: Error Path is FOUND. [2020-11-28 04:35:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:35:53,968 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:35:54,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:35:54,007 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:35:54,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:35:54,046 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:35:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 04:35:54,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 04:35:54,077 WARN L483 CodeCheckObserver]: This program is UNSAFE, Check terminated with 3 iterations. [2020-11-28 04:35:54,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 28.11 04:35:54 ImpRootNode [2020-11-28 04:35:54,100 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2020-11-28 04:35:54,101 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 04:35:54,101 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 04:35:54,101 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 04:35:54,102 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:53" (3/4) ... [2020-11-28 04:35:54,104 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 04:35:54,161 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0c04845b-123d-4562-84bf-4632f56bffd4/bin/ukojak/witness.graphml [2020-11-28 04:35:54,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 04:35:54,167 INFO L168 Benchmark]: Toolchain (without parser) took 2070.39 ms. Allocated memory is still 109.1 MB. Free memory was 74.9 MB in the beginning and 64.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:35:54,168 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 82.7 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:35:54,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.79 ms. Allocated memory is still 109.1 MB. Free memory was 74.8 MB in the beginning and 86.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 04:35:54,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.79 ms. Allocated memory is still 109.1 MB. Free memory was 86.2 MB in the beginning and 85.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 04:35:54,173 INFO L168 Benchmark]: Boogie Preprocessor took 17.97 ms. Allocated memory is still 109.1 MB. Free memory was 85.2 MB in the beginning and 84.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:35:54,176 INFO L168 Benchmark]: RCFGBuilder took 531.43 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 70.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 04:35:54,177 INFO L168 Benchmark]: CodeCheck took 1087.52 ms. Allocated memory is still 109.1 MB. Free memory was 70.5 MB in the beginning and 66.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-28 04:35:54,178 INFO L168 Benchmark]: Witness Printer took 64.14 ms. Allocated memory is still 109.1 MB. Free memory was 66.1 MB in the beginning and 64.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 04:35:54,181 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, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 4 SDslu, 0 SDs, 0 SdLazy, 40 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, traceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 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: 2]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L5] unsigned char n = __VERIFIER_nondet_uchar(); [L6] COND FALSE !(n == 0) [L9] unsigned char v = 0; [L10] unsigned char s = 0; [L11] unsigned int i = 0; [L12] COND TRUE i < n [L13] v = __VERIFIER_nondet_uchar() [L14] s += v [L15] ++i [L12] COND TRUE i < n [L13] v = __VERIFIER_nondet_uchar() [L14] s += v [L15] ++i [L12] COND FALSE !(i < n) [L17] COND TRUE s < v [L18] CALL reach_error() [L2] __assert_fail("0", "linear-inequality-inv-b.c", 2, "reach_error") * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 109.1 MB. Free memory was 82.7 MB in the beginning and 82.7 MB in the end (delta: 26.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 328.79 ms. Allocated memory is still 109.1 MB. Free memory was 74.8 MB in the beginning and 86.2 MB in the end (delta: -11.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.79 ms. Allocated memory is still 109.1 MB. Free memory was 86.2 MB in the beginning and 85.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.97 ms. Allocated memory is still 109.1 MB. Free memory was 85.2 MB in the beginning and 84.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 531.43 ms. Allocated memory is still 109.1 MB. Free memory was 84.0 MB in the beginning and 70.5 MB in the end (delta: 13.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * CodeCheck took 1087.52 ms. Allocated memory is still 109.1 MB. Free memory was 70.5 MB in the beginning and 66.1 MB in the end (delta: 4.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 64.14 ms. Allocated memory is still 109.1 MB. Free memory was 66.1 MB in the beginning and 64.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...