./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/ldv-regression/test_while_int.c_1.i -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 0fa3b5fd31b0165adcc8931bdb36ef94241c9d1c36f2e335867de97d47f976fb --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 15:01:46,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 15:01:46,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 15:01:46,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 15:01:46,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 15:01:46,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 15:01:46,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 15:01:46,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 15:01:46,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 15:01:46,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 15:01:46,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 15:01:46,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 15:01:46,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 15:01:46,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 15:01:46,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 15:01:46,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 15:01:46,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 15:01:46,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 15:01:46,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 15:01:46,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 15:01:46,369 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 15:01:46,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 15:01:46,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 15:01:46,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 15:01:46,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 15:01:46,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 15:01:46,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 15:01:46,376 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 15:01:46,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 15:01:46,377 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 15:01:46,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 15:01:46,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 15:01:46,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 15:01:46,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 15:01:46,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 15:01:46,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 15:01:46,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 15:01:46,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 15:01:46,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 15:01:46,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 15:01:46,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 15:01:46,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 15:01:46,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 15:01:46,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 15:01:46,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 15:01:46,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 15:01:46,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 15:01:46,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 15:01:46,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 15:01:46,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 15:01:46,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 15:01:46,408 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 15:01:46,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 15:01:46,409 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 15:01:46,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 15:01:46,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 15:01:46,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 15:01:46,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 15:01:46,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 15:01:46,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 15:01:46,410 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 15:01:46,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 15:01:46,411 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 15:01:46,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 15:01:46,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 15:01:46,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 15:01:46,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 15:01:46,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:01:46,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 15:01:46,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 15:01:46,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 15:01:46,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 15:01:46,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 15:01:46,417 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 15:01:46,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 15:01:46,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 15:01:46,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fa3b5fd31b0165adcc8931bdb36ef94241c9d1c36f2e335867de97d47f976fb [2022-07-13 15:01:46,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 15:01:46,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 15:01:46,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 15:01:46,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 15:01:46,689 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 15:01:46,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2022-07-13 15:01:46,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd6ccb818/9898f2a5f5684ed4a0d4e46a480b8029/FLAG995ff6708 [2022-07-13 15:01:47,190 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 15:01:47,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test_while_int.c_1.i [2022-07-13 15:01:47,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd6ccb818/9898f2a5f5684ed4a0d4e46a480b8029/FLAG995ff6708 [2022-07-13 15:01:47,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd6ccb818/9898f2a5f5684ed4a0d4e46a480b8029 [2022-07-13 15:01:47,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 15:01:47,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 15:01:47,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 15:01:47,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 15:01:47,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 15:01:47,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be628d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47, skipping insertion in model container [2022-07-13 15:01:47,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 15:01:47,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 15:01:47,740 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/ldv-regression/test_while_int.c_1.i[300,313] [2022-07-13 15:01:47,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:01:47,800 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 15:01:47,812 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/ldv-regression/test_while_int.c_1.i[300,313] [2022-07-13 15:01:47,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 15:01:47,826 INFO L208 MainTranslator]: Completed translation [2022-07-13 15:01:47,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47 WrapperNode [2022-07-13 15:01:47,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 15:01:47,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 15:01:47,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 15:01:47,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 15:01:47,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,856 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2022-07-13 15:01:47,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 15:01:47,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 15:01:47,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 15:01:47,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 15:01:47,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 15:01:47,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 15:01:47,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 15:01:47,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 15:01:47,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (1/1) ... [2022-07-13 15:01:47,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 15:01:47,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:01:47,913 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) [2022-07-13 15:01:47,935 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 [2022-07-13 15:01:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 15:01:47,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 15:01:47,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 15:01:47,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 15:01:48,000 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 15:01:48,001 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 15:01:48,094 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 15:01:48,100 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 15:01:48,100 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 15:01:48,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:01:48 BoogieIcfgContainer [2022-07-13 15:01:48,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 15:01:48,105 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 15:01:48,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 15:01:48,109 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 15:01:48,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 03:01:47" (1/3) ... [2022-07-13 15:01:48,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773399c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:01:48, skipping insertion in model container [2022-07-13 15:01:48,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:01:47" (2/3) ... [2022-07-13 15:01:48,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@773399c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 03:01:48, skipping insertion in model container [2022-07-13 15:01:48,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:01:48" (3/3) ... [2022-07-13 15:01:48,113 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2022-07-13 15:01:48,125 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 15:01:48,126 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 15:01:48,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 15:01:48,189 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@43df088d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1bd04ee2 [2022-07-13 15:01:48,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 15:01:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-07-13 15:01:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-13 15:01:48,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:01:48,213 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-13 15:01:48,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:01:48,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:01:48,221 INFO L85 PathProgramCache]: Analyzing trace with hash 28699818, now seen corresponding path program 1 times [2022-07-13 15:01:48,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:01:48,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374865373] [2022-07-13 15:01:48,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:48,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:01:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:48,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:01:48,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:01:48,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374865373] [2022-07-13 15:01:48,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374865373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 15:01:48,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 15:01:48,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 15:01:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419225872] [2022-07-13 15:01:48,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 15:01:48,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 15:01:48,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:01:48,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 15:01:48,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 15:01:48,465 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-13 15:01:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:01:48,493 INFO L93 Difference]: Finished difference Result 22 states and 31 transitions. [2022-07-13 15:01:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 15:01:48,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-07-13 15:01:48,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:01:48,502 INFO L225 Difference]: With dead ends: 22 [2022-07-13 15:01:48,502 INFO L226 Difference]: Without dead ends: 9 [2022-07-13 15:01:48,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 15:01:48,508 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:01:48,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:01:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-07-13 15:01:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-07-13 15:01:48,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) 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) [2022-07-13 15:01:48,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-07-13 15:01:48,555 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2022-07-13 15:01:48,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:01:48,556 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-07-13 15:01:48,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-07-13 15:01:48,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-07-13 15:01:48,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 15:01:48,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:01:48,565 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-07-13 15:01:48,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 15:01:48,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:01:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:01:48,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1810655527, now seen corresponding path program 1 times [2022-07-13 15:01:48,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:01:48,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492550432] [2022-07-13 15:01:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:48,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:01:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:01:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 15:01:48,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492550432] [2022-07-13 15:01:48,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492550432] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 15:01:48,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889237607] [2022-07-13 15:01:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:48,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:01:48,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 15:01:48,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 15:01:48,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 15:01:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 15:01:48,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 15:01:48,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 15:01:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:01:48,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 15:01:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 15:01:48,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889237607] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 15:01:48,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 15:01:48,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-07-13 15:01:48,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766819116] [2022-07-13 15:01:48,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 15:01:48,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 15:01:48,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 15:01:48,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 15:01:48,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 15:01:48,806 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2022-07-13 15:01:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 15:01:48,827 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-07-13 15:01:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 15:01:48,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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) Word has length 7 [2022-07-13 15:01:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 15:01:48,829 INFO L225 Difference]: With dead ends: 13 [2022-07-13 15:01:48,829 INFO L226 Difference]: Without dead ends: 11 [2022-07-13 15:01:48,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 15:01:48,830 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 15:01:48,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 15:01:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-07-13 15:01:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2022-07-13 15:01:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2022-07-13 15:01:48,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-07-13 15:01:48,834 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2022-07-13 15:01:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 15:01:48,834 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-07-13 15:01:48,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2022-07-13 15:01:48,835 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-07-13 15:01:48,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 15:01:48,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 15:01:48,835 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2022-07-13 15:01:48,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 15:01:49,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 15:01:49,056 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 15:01:49,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 15:01:49,056 INFO L85 PathProgramCache]: Analyzing trace with hash 578140772, now seen corresponding path program 2 times [2022-07-13 15:01:49,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 15:01:49,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602868149] [2022-07-13 15:01:49,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 15:01:49,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 15:01:49,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 15:01:49,068 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 15:01:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 15:01:49,095 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 15:01:49,097 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 15:01:49,098 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 15:01:49,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 15:01:49,104 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1] [2022-07-13 15:01:49,108 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 15:01:49,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 03:01:49 BoogieIcfgContainer [2022-07-13 15:01:49,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 15:01:49,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 15:01:49,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 15:01:49,126 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 15:01:49,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:01:48" (3/4) ... [2022-07-13 15:01:49,128 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-13 15:01:49,156 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 15:01:49,156 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 15:01:49,157 INFO L158 Benchmark]: Toolchain (without parser) took 1546.45ms. Allocated memory was 98.6MB in the beginning and 155.2MB in the end (delta: 56.6MB). Free memory was 73.3MB in the beginning and 116.9MB in the end (delta: -43.6MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2022-07-13 15:01:49,157 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory was 57.2MB in the beginning and 57.1MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 15:01:49,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.16ms. Allocated memory is still 98.6MB. Free memory was 73.1MB in the beginning and 75.3MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 15:01:49,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.59ms. Allocated memory is still 98.6MB. Free memory was 75.3MB in the beginning and 74.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 15:01:49,158 INFO L158 Benchmark]: Boogie Preprocessor took 21.21ms. Allocated memory is still 98.6MB. Free memory was 74.0MB in the beginning and 73.0MB in the end (delta: 988.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 15:01:49,159 INFO L158 Benchmark]: RCFGBuilder took 222.02ms. Allocated memory is still 98.6MB. Free memory was 73.0MB in the beginning and 64.8MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 15:01:49,159 INFO L158 Benchmark]: TraceAbstraction took 1019.71ms. Allocated memory was 98.6MB in the beginning and 155.2MB in the end (delta: 56.6MB). Free memory was 64.3MB in the beginning and 118.4MB in the end (delta: -54.0MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2022-07-13 15:01:49,160 INFO L158 Benchmark]: Witness Printer took 30.55ms. Allocated memory is still 155.2MB. Free memory was 118.4MB in the beginning and 116.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 15:01:49,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 98.6MB. Free memory was 57.2MB in the beginning and 57.1MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.16ms. Allocated memory is still 98.6MB. Free memory was 73.1MB in the beginning and 75.3MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.59ms. Allocated memory is still 98.6MB. Free memory was 75.3MB in the beginning and 74.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.21ms. Allocated memory is still 98.6MB. Free memory was 74.0MB in the beginning and 73.0MB in the end (delta: 988.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 222.02ms. Allocated memory is still 98.6MB. Free memory was 73.0MB in the beginning and 64.8MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1019.71ms. Allocated memory was 98.6MB in the beginning and 155.2MB in the end (delta: 56.6MB). Free memory was 64.3MB in the beginning and 118.4MB in the end (delta: -54.0MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * Witness Printer took 30.55ms. Allocated memory is still 155.2MB. Free memory was 118.4MB in the beginning and 116.9MB in the end (delta: 1.5MB). 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, 0.0s 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] int i=0; VAL [i=0] [L15] COND TRUE i<5 [L16] i++ VAL [i=1] [L18] (i!=3) ? (0) : __blast_assert () VAL [i=1] [L15] COND TRUE i<5 [L16] i++ VAL [i=2] [L18] (i!=3) ? (0) : __blast_assert () VAL [i=2] [L15] COND TRUE i<5 [L16] i++ VAL [i=3] [L18] (i!=3) ? (0) : __blast_assert () [L18] CALL __blast_assert () [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 12 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 50 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/6 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! [2022-07-13 15:01:49,210 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE