./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector-regression/signextension-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector-regression/signextension-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c1193366da6b600000e2fc611882eef3ca358d3 .......................................................................................................................................................................................................................................... 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 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 03:07:59,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 03:07:59,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 03:07:59,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 03:07:59,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 03:07:59,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 03:07:59,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 03:07:59,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 03:07:59,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 03:07:59,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 03:07:59,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 03:07:59,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 03:07:59,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 03:07:59,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 03:07:59,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 03:07:59,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 03:07:59,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 03:07:59,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 03:07:59,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 03:07:59,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 03:07:59,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 03:07:59,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 03:07:59,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 03:07:59,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 03:07:59,991 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 03:07:59,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 03:07:59,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 03:07:59,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 03:07:59,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 03:07:59,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 03:07:59,993 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 03:07:59,994 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 03:07:59,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 03:07:59,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 03:07:59,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 03:07:59,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 03:07:59,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 03:07:59,998 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 03:07:59,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 03:08:00,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 03:08:00,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 03:08:00,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 03:08:00,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 03:08:00,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 03:08:00,033 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 03:08:00,033 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 03:08:00,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 03:08:00,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 03:08:00,034 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 03:08:00,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 03:08:00,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 03:08:00,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 03:08:00,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 03:08:00,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 03:08:00,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 03:08:00,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 03:08:00,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 03:08:00,036 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 03:08:00,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 03:08:00,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 03:08:00,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 03:08:00,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 03:08:00,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 03:08:00,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 03:08:00,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:08:00,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 03:08:00,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 03:08:00,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 03:08:00,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 03:08:00,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 03:08:00,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 03:08:00,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 03:08:00,047 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c1193366da6b600000e2fc611882eef3ca358d3 [2021-08-29 03:08:00,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 03:08:00,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 03:08:00,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 03:08:00,300 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 03:08:00,300 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 03:08:00,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-regression/signextension-1.c [2021-08-29 03:08:00,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa9dc26fd/00c2511cc81241a6959d1270203dccd9/FLAG3d72b6ae9 [2021-08-29 03:08:00,694 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 03:08:00,694 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/signextension-1.c [2021-08-29 03:08:00,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa9dc26fd/00c2511cc81241a6959d1270203dccd9/FLAG3d72b6ae9 [2021-08-29 03:08:01,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa9dc26fd/00c2511cc81241a6959d1270203dccd9 [2021-08-29 03:08:01,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 03:08:01,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 03:08:01,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 03:08:01,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 03:08:01,132 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 03:08:01,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adf8c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01, skipping insertion in model container [2021-08-29 03:08:01,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 03:08:01,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 03:08:01,228 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/signextension-1.c[922,935] [2021-08-29 03:08:01,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:08:01,235 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 03:08:01,243 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/signextension-1.c[922,935] [2021-08-29 03:08:01,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:08:01,253 INFO L208 MainTranslator]: Completed translation [2021-08-29 03:08:01,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01 WrapperNode [2021-08-29 03:08:01,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 03:08:01,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 03:08:01,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 03:08:01,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 03:08:01,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 03:08:01,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 03:08:01,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 03:08:01,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 03:08:01,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 03:08:01,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 03:08:01,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 03:08:01,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 03:08:01,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (1/1) ... [2021-08-29 03:08:01,316 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:08:01,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:08:01,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 03:08:01,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 03:08:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 03:08:01,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 03:08:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 03:08:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 03:08:01,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 03:08:01,478 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-29 03:08:01,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:08:01 BoogieIcfgContainer [2021-08-29 03:08:01,479 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 03:08:01,481 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 03:08:01,481 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 03:08:01,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 03:08:01,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:08:01" (1/3) ... [2021-08-29 03:08:01,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e1d5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:08:01, skipping insertion in model container [2021-08-29 03:08:01,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:08:01" (2/3) ... [2021-08-29 03:08:01,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e1d5d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:08:01, skipping insertion in model container [2021-08-29 03:08:01,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:08:01" (3/3) ... [2021-08-29 03:08:01,485 INFO L111 eAbstractionObserver]: Analyzing ICFG signextension-1.c [2021-08-29 03:08:01,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 03:08:01,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 03:08:01,528 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 03:08:01,535 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 03:08:01,536 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 03:08:01,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 03:08:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-29 03:08:01,550 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:08:01,550 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-29 03:08:01,551 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:08:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:08:01,556 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-08-29 03:08:01,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:08:01,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012537519] [2021-08-29 03:08:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:08:01,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:08:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:08:01,666 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 03:08:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:08:01,719 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 03:08:01,720 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 03:08:01,721 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 03:08:01,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 03:08:01,728 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 03:08:01,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 03:08:01 BoogieIcfgContainer [2021-08-29 03:08:01,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 03:08:01,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 03:08:01,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 03:08:01,745 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 03:08:01,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:08:01" (3/4) ... [2021-08-29 03:08:01,747 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 03:08:01,782 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 03:08:01,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 03:08:01,786 INFO L158 Benchmark]: Toolchain (without parser) took 654.81ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 31.6MB in the beginning and 43.5MB in the end (delta: -11.9MB). Peak memory consumption was 2.8MB. Max. memory is 16.1GB. [2021-08-29 03:08:01,786 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:08:01,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 126.27ms. Allocated memory is still 54.5MB. Free memory was 31.4MB in the beginning and 35.6MB in the end (delta: -4.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-08-29 03:08:01,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.63ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 35.6MB in the beginning and 53.0MB in the end (delta: -17.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 03:08:01,788 INFO L158 Benchmark]: Boogie Preprocessor took 10.94ms. Allocated memory is still 69.2MB. Free memory was 53.0MB in the beginning and 52.1MB in the end (delta: 902.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:08:01,788 INFO L158 Benchmark]: RCFGBuilder took 168.92ms. Allocated memory is still 69.2MB. Free memory was 52.1MB in the beginning and 43.9MB in the end (delta: 8.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 03:08:01,788 INFO L158 Benchmark]: TraceAbstraction took 261.38ms. Allocated memory is still 69.2MB. Free memory was 43.3MB in the beginning and 45.3MB in the end (delta: -2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:08:01,788 INFO L158 Benchmark]: Witness Printer took 37.59ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 43.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 03:08:01,792 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 54.5MB. Free memory was 36.2MB in the beginning and 36.1MB in the end (delta: 37.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 126.27ms. Allocated memory is still 54.5MB. Free memory was 31.4MB in the beginning and 35.6MB in the end (delta: -4.2MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.63ms. Allocated memory was 54.5MB in the beginning and 69.2MB in the end (delta: 14.7MB). Free memory was 35.6MB in the beginning and 53.0MB in the end (delta: -17.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.94ms. Allocated memory is still 69.2MB. Free memory was 53.0MB in the beginning and 52.1MB in the end (delta: 902.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 168.92ms. Allocated memory is still 69.2MB. Free memory was 52.1MB in the beginning and 43.9MB in the end (delta: 8.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 261.38ms. Allocated memory is still 69.2MB. Free memory was 43.3MB in the beginning and 45.3MB in the end (delta: -2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 37.59ms. Allocated memory is still 69.2MB. Free memory was 45.3MB in the beginning and 43.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 27]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L7] unsigned short int allbits = -1; [L8] short int signedallbits = allbits; [L9] int unsignedtosigned = allbits; [L10] unsigned int unsignedtounsigned = allbits; [L11] int signedtosigned = signedallbits; [L12] unsigned int signedtounsigned = signedallbits; [L21-L22] COND TRUE unsignedtosigned == 65535 && unsignedtounsigned == 65535 && signedtosigned == -1 && signedtounsigned == 4294967295 [L27] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 200.18ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 5.77ms, AutomataDifference: 0.00ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 7.94ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.47ms SsaConstructionTime, 46.39ms SatisfiabilityAnalysisTime, 0.00ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-29 03:08:01,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...