./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 6c24879c 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-?-6c24879 [2022-07-12 03:48:24,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 03:48:24,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 03:48:24,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 03:48:24,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 03:48:24,588 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 03:48:24,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 03:48:24,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 03:48:24,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 03:48:24,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 03:48:24,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 03:48:24,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 03:48:24,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 03:48:24,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 03:48:24,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 03:48:24,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 03:48:24,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 03:48:24,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 03:48:24,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 03:48:24,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 03:48:24,622 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 03:48:24,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 03:48:24,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 03:48:24,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 03:48:24,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 03:48:24,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 03:48:24,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 03:48:24,634 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 03:48:24,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 03:48:24,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 03:48:24,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 03:48:24,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 03:48:24,639 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 03:48:24,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 03:48:24,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 03:48:24,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 03:48:24,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 03:48:24,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 03:48:24,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 03:48:24,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 03:48:24,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 03:48:24,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 03:48:24,646 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 03:48:24,675 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 03:48:24,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 03:48:24,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 03:48:24,676 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 03:48:24,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 03:48:24,677 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 03:48:24,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 03:48:24,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 03:48:24,678 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 03:48:24,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 03:48:24,679 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 03:48:24,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 03:48:24,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 03:48:24,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 03:48:24,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 03:48:24,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 03:48:24,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 03:48:24,681 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 03:48:24,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 03:48:24,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 03:48:24,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 03:48:24,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 03:48:24,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 03:48:24,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 03:48:24,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:48:24,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 03:48:24,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 03:48:24,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 03:48:24,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 03:48:24,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 03:48:24,684 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 03:48:24,684 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 03:48:24,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 03:48:24,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 314932412eeed441a28cefb8ae3e569787d9db1ef6d3b76281c1ff69eee43f8b [2022-07-12 03:48:24,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 03:48:24,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 03:48:24,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 03:48:24,970 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 03:48:24,970 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 03:48:24,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/terminator_02-1.c [2022-07-12 03:48:25,061 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95fe853b0/0c8de8d14dcd426280a4309b22366877/FLAG988546ab6 [2022-07-12 03:48:25,457 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 03:48:25,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/terminator_02-1.c [2022-07-12 03:48:25,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95fe853b0/0c8de8d14dcd426280a4309b22366877/FLAG988546ab6 [2022-07-12 03:48:25,873 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95fe853b0/0c8de8d14dcd426280a4309b22366877 [2022-07-12 03:48:25,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 03:48:25,877 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 03:48:25,879 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 03:48:25,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 03:48:25,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 03:48:25,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:48:25" (1/1) ... [2022-07-12 03:48:25,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22465f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:25, skipping insertion in model container [2022-07-12 03:48:25,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 03:48:25" (1/1) ... [2022-07-12 03:48:25,889 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 03:48:25,900 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 03:48:26,050 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] [2022-07-12 03:48:26,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:48:26,073 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 03:48:26,087 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] [2022-07-12 03:48:26,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 03:48:26,105 INFO L208 MainTranslator]: Completed translation [2022-07-12 03:48:26,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26 WrapperNode [2022-07-12 03:48:26,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 03:48:26,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 03:48:26,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 03:48:26,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 03:48:26,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,121 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,139 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2022-07-12 03:48:26,139 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 03:48:26,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 03:48:26,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 03:48:26,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 03:48:26,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,149 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 03:48:26,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 03:48:26,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 03:48:26,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 03:48:26,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (1/1) ... [2022-07-12 03:48:26,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 03:48:26,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 03:48:26,209 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) [2022-07-12 03:48:26,219 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 [2022-07-12 03:48:26,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 03:48:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 03:48:26,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 03:48:26,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 03:48:26,311 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 03:48:26,312 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 03:48:26,423 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 03:48:26,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 03:48:26,436 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 03:48:26,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:48:26 BoogieIcfgContainer [2022-07-12 03:48:26,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 03:48:26,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 03:48:26,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 03:48:26,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 03:48:26,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 03:48:25" (1/3) ... [2022-07-12 03:48:26,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44eb7e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:48:26, skipping insertion in model container [2022-07-12 03:48:26,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 03:48:26" (2/3) ... [2022-07-12 03:48:26,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44eb7e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 03:48:26, skipping insertion in model container [2022-07-12 03:48:26,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:48:26" (3/3) ... [2022-07-12 03:48:26,461 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-1.c [2022-07-12 03:48:26,475 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 03:48:26,486 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 03:48:26,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 03:48:26,573 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@5d63411e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@18d23510 [2022-07-12 03:48:26,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 03:48:26,583 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) [2022-07-12 03:48:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-12 03:48:26,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:48:26,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-12 03:48:26,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:48:26,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:48:26,605 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2022-07-12 03:48:26,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:48:26,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882238493] [2022-07-12 03:48:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:48:26,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:48:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 03:48:26,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 03:48:26,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 03:48:26,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882238493] [2022-07-12 03:48:26,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882238493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 03:48:26,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 03:48:26,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 03:48:26,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729827363] [2022-07-12 03:48:26,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 03:48:26,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 03:48:26,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 03:48:26,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 03:48:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 03:48:26,776 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) [2022-07-12 03:48:26,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 03:48:26,791 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2022-07-12 03:48:26,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 03:48:26,794 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 [2022-07-12 03:48:26,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 03:48:26,802 INFO L225 Difference]: With dead ends: 20 [2022-07-12 03:48:26,803 INFO L226 Difference]: Without dead ends: 8 [2022-07-12 03:48:26,814 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 [2022-07-12 03:48:26,820 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 [2022-07-12 03:48:26,821 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] [2022-07-12 03:48:26,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-07-12 03:48:26,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-07-12 03:48:26,847 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) [2022-07-12 03:48:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-07-12 03:48:26,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-07-12 03:48:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 03:48:26,849 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-07-12 03:48:26,850 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) [2022-07-12 03:48:26,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-07-12 03:48:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-12 03:48:26,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 03:48:26,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-12 03:48:26,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 03:48:26,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 03:48:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 03:48:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2022-07-12 03:48:26,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 03:48:26,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853037509] [2022-07-12 03:48:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 03:48:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 03:48:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:48:26,884 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 03:48:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 03:48:26,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 03:48:26,918 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 03:48:26,920 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 03:48:26,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 03:48:26,925 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 03:48:26,932 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 03:48:26,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 03:48:26 BoogieIcfgContainer [2022-07-12 03:48:26,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 03:48:26,961 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 03:48:26,962 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 03:48:26,963 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 03:48:26,963 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 03:48:26" (3/4) ... [2022-07-12 03:48:26,965 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 03:48:27,003 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 03:48:27,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 03:48:27,006 INFO L158 Benchmark]: Toolchain (without parser) took 1127.99ms. Allocated memory is still 109.1MB. Free memory was 74.6MB in the beginning and 49.3MB in the end (delta: 25.3MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2022-07-12 03:48:27,007 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory was 52.7MB in the beginning and 52.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:48:27,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.55ms. Allocated memory is still 109.1MB. Free memory was 74.3MB in the beginning and 85.0MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 03:48:27,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.17ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 83.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 03:48:27,010 INFO L158 Benchmark]: Boogie Preprocessor took 27.48ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 82.5MB in the end (delta: 920.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:48:27,010 INFO L158 Benchmark]: RCFGBuilder took 270.06ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 72.9MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 03:48:27,011 INFO L158 Benchmark]: TraceAbstraction took 518.99ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 50.5MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-12 03:48:27,011 INFO L158 Benchmark]: Witness Printer took 42.99ms. Allocated memory is still 109.1MB. Free memory was 50.5MB in the beginning and 49.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 03:48:27,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 81.8MB. Free memory was 52.7MB in the beginning and 52.7MB in the end (delta: 28.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.55ms. Allocated memory is still 109.1MB. Free memory was 74.3MB in the beginning and 85.0MB in the end (delta: -10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.17ms. Allocated memory is still 109.1MB. Free memory was 85.0MB in the beginning and 83.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.48ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 82.5MB in the end (delta: 920.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 270.06ms. Allocated memory is still 109.1MB. Free memory was 82.5MB in the beginning and 72.9MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 518.99ms. Allocated memory is still 109.1MB. Free memory was 72.9MB in the beginning and 50.5MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 42.99ms. Allocated memory is still 109.1MB. Free memory was 50.5MB in the beginning and 49.3MB in the end (delta: 1.2MB). 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