./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/terminator_02-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/loops/terminator_02-1.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 314932412eeed441a28cefb8ae3e569787d9db1ef6d3b76281c1ff69eee43f8b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:31:05,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:31:05,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:31:05,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:31:05,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:31:05,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:31:05,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:31:05,155 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:31:05,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:31:05,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:31:05,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:31:05,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:31:05,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:31:05,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:31:05,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:31:05,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:31:05,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:31:05,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:31:05,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:31:05,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:31:05,176 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:31:05,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:31:05,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:31:05,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:31:05,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:31:05,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:31:05,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:31:05,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:31:05,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:31:05,189 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:31:05,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:31:05,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:31:05,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:31:05,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:31:05,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:31:05,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:31:05,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:31:05,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:31:05,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:31:05,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:31:05,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:31:05,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:31:05,196 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:31:05,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:31:05,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:31:05,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:31:05,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:31:05,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:31:05,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:31:05,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:31:05,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:31:05,216 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:31:05,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:31:05,216 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:31:05,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:31:05,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:31:05,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:31:05,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:31:05,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:31:05,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:31:05,217 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:31:05,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:31:05,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:31:05,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:31:05,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:31:05,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:31:05,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:31:05,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:31:05,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:31:05,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:31:05,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:31:05,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:31:05,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:31:05,219 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:31:05,219 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:31:05,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:31:05,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 314932412eeed441a28cefb8ae3e569787d9db1ef6d3b76281c1ff69eee43f8b [2022-07-21 02:31:05,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:31:05,533 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:31:05,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:31:05,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:31:05,537 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:31:05,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_02-1.c [2022-07-21 02:31:05,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af6d7dcb/84c96371824842acb4efbfcf8ca7d088/FLAG821151e26 [2022-07-21 02:31:05,950 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:31:05,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-1.c [2022-07-21 02:31:05,955 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af6d7dcb/84c96371824842acb4efbfcf8ca7d088/FLAG821151e26 [2022-07-21 02:31:06,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7af6d7dcb/84c96371824842acb4efbfcf8ca7d088 [2022-07-21 02:31:06,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:31:06,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:31:06,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:31:06,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:31:06,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:31:06,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137faf4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06, skipping insertion in model container [2022-07-21 02:31:06,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:31:06,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:31:06,492 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-1.c[327,340] [2022-07-21 02:31:06,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:31:06,508 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:31:06,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-1.c[327,340] [2022-07-21 02:31:06,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:31:06,532 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:31:06,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06 WrapperNode [2022-07-21 02:31:06,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:31:06,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:31:06,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:31:06,534 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:31:06,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,581 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-07-21 02:31:06,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:31:06,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:31:06,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:31:06,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:31:06,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:31:06,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:31:06,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:31:06,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:31:06,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (1/1) ... [2022-07-21 02:31:06,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:31:06,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:31:06,679 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) [2022-07-21 02:31:06,698 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 [2022-07-21 02:31:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:31:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:31:06,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:31:06,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:31:06,780 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:31:06,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:31:06,862 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:31:06,867 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:31:06,867 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 02:31:06,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:31:06 BoogieIcfgContainer [2022-07-21 02:31:06,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:31:06,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:31:06,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:31:06,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:31:06,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:31:06" (1/3) ... [2022-07-21 02:31:06,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1840bbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:31:06, skipping insertion in model container [2022-07-21 02:31:06,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:31:06" (2/3) ... [2022-07-21 02:31:06,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1840bbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:31:06, skipping insertion in model container [2022-07-21 02:31:06,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:31:06" (3/3) ... [2022-07-21 02:31:06,887 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2022-07-21 02:31:06,897 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:31:06,898 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:31:06,928 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:31:06,933 INFO L357 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, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3bee6512, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@115b0e32 [2022-07-21 02:31:06,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:31:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2022-07-21 02:31:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 02:31:06,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:31:06,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 02:31:06,940 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:31:06,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:31:06,944 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2022-07-21 02:31:06,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:31:06,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325445362] [2022-07-21 02:31:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:31:06,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:31:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:31:07,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 02:31:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 02:31:07,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325445362] [2022-07-21 02:31:07,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325445362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:31:07,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:31:07,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 02:31:07,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931623403] [2022-07-21 02:31:07,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:31:07,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 02:31:07,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 02:31:07,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 02:31:07,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:31:07,108 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-21 02:31:07,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:31:07,118 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-07-21 02:31:07,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 02:31:07,120 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2022-07-21 02:31:07,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:31:07,126 INFO L225 Difference]: With dead ends: 20 [2022-07-21 02:31:07,126 INFO L226 Difference]: Without dead ends: 8 [2022-07-21 02:31:07,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 02:31:07,132 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 02:31:07,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 02:31:07,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-21 02:31:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-21 02:31:07,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-07-21 02:31:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-07-21 02:31:07,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-07-21 02:31:07,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:31:07,154 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-07-21 02:31:07,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-07-21 02:31:07,155 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-07-21 02:31:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-21 02:31:07,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:31:07,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-21 02:31:07,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:31:07,156 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:31:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:31:07,156 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2022-07-21 02:31:07,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:31:07,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635768589] [2022-07-21 02:31:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:31:07,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:31:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:31:07,182 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 02:31:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:31:07,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 02:31:07,217 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 02:31:07,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:31:07,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 02:31:07,224 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 02:31:07,227 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:31:07,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:31:07 BoogieIcfgContainer [2022-07-21 02:31:07,247 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:31:07,248 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:31:07,248 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:31:07,249 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:31:07,249 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:31:06" (3/4) ... [2022-07-21 02:31:07,253 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 02:31:07,281 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 02:31:07,281 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:31:07,283 INFO L158 Benchmark]: Toolchain (without parser) took 898.26ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 35.4MB in the end (delta: 11.5MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2022-07-21 02:31:07,283 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 67.1MB. Free memory was 47.8MB in the beginning and 47.7MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:31:07,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 147.59ms. Allocated memory is still 67.1MB. Free memory was 46.7MB in the beginning and 37.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 02:31:07,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.90ms. Allocated memory is still 67.1MB. Free memory was 37.2MB in the beginning and 50.2MB in the end (delta: -13.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:31:07,285 INFO L158 Benchmark]: Boogie Preprocessor took 25.61ms. Allocated memory is still 67.1MB. Free memory was 50.2MB in the beginning and 49.2MB in the end (delta: 982.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:31:07,286 INFO L158 Benchmark]: RCFGBuilder took 271.77ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 40.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 02:31:07,286 INFO L158 Benchmark]: TraceAbstraction took 364.84ms. Allocated memory is still 67.1MB. Free memory was 39.7MB in the beginning and 37.1MB in the end (delta: 2.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2022-07-21 02:31:07,286 INFO L158 Benchmark]: Witness Printer took 33.51ms. Allocated memory is still 67.1MB. Free memory was 37.1MB in the beginning and 35.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:31:07,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 67.1MB. Free memory was 47.8MB in the beginning and 47.7MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 147.59ms. Allocated memory is still 67.1MB. Free memory was 46.7MB in the beginning and 37.2MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.90ms. Allocated memory is still 67.1MB. Free memory was 37.2MB in the beginning and 50.2MB in the end (delta: -13.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.61ms. Allocated memory is still 67.1MB. Free memory was 50.2MB in the beginning and 49.2MB in the end (delta: 982.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 271.77ms. Allocated memory is still 67.1MB. Free memory was 49.2MB in the beginning and 40.3MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 364.84ms. Allocated memory is still 67.1MB. Free memory was 39.7MB in the beginning and 37.1MB in the end (delta: 2.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Witness Printer took 33.51ms. Allocated memory is still 67.1MB. Free memory was 37.1MB in the beginning and 35.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] int x=__VERIFIER_nondet_int(); [L17] int y=__VERIFIER_nondet_int(); [L18] int z=__VERIFIER_nondet_int(); [L20] COND FALSE !(x<100 && 100