./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec 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/nla-digbench-scaling/geo1-u_unwindbound2.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 54b659f4af87e87bb0fdaca0252bf481be596a1b .............................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-26 06:29:31,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-26 06:29:31,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-26 06:29:31,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-26 06:29:31,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-26 06:29:31,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-26 06:29:31,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-26 06:29:31,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-26 06:29:31,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-26 06:29:31,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-26 06:29:31,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-26 06:29:31,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-26 06:29:31,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-26 06:29:31,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-26 06:29:31,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-26 06:29:31,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-26 06:29:31,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-26 06:29:31,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-26 06:29:31,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-26 06:29:31,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-26 06:29:31,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-26 06:29:31,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-26 06:29:31,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-26 06:29:31,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-26 06:29:31,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-26 06:29:31,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-26 06:29:31,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-26 06:29:31,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-26 06:29:31,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-26 06:29:31,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-26 06:29:31,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-26 06:29:31,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-26 06:29:31,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-26 06:29:31,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-26 06:29:31,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-26 06:29:31,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-26 06:29:31,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-26 06:29:31,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-26 06:29:31,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-26 06:29:31,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-26 06:29:31,763 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-26 06:29:31,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-26 06:29:31,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-26 06:29:31,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-26 06:29:31,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-26 06:29:31,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-26 06:29:31,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-26 06:29:31,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-26 06:29:31,798 INFO L138 SettingsManager]: * Use SBE=true [2021-08-26 06:29:31,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-26 06:29:31,799 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-26 06:29:31,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-26 06:29:31,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-26 06:29:31,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-26 06:29:31,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-26 06:29:31,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-26 06:29:31,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-26 06:29:31,800 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-26 06:29:31,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-26 06:29:31,800 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-26 06:29:31,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-26 06:29:31,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-26 06:29:31,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-26 06:29:31,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-26 06:29:31,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:29:31,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-26 06:29:31,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-26 06:29:31,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-26 06:29:31,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-26 06:29:31,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-26 06:29:31,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-26 06:29:31,813 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-26 06:29:31,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54b659f4af87e87bb0fdaca0252bf481be596a1b [2021-08-26 06:29:32,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-26 06:29:32,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-26 06:29:32,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-26 06:29:32,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-26 06:29:32,067 INFO L275 PluginConnector]: CDTParser initialized [2021-08-26 06:29:32,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c [2021-08-26 06:29:32,115 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f62db90b/e06c4b1daf7a495996fc4d8577bf2184/FLAG6b26fc3c8 [2021-08-26 06:29:32,451 INFO L306 CDTParser]: Found 1 translation units. [2021-08-26 06:29:32,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c [2021-08-26 06:29:32,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f62db90b/e06c4b1daf7a495996fc4d8577bf2184/FLAG6b26fc3c8 [2021-08-26 06:29:32,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f62db90b/e06c4b1daf7a495996fc4d8577bf2184 [2021-08-26 06:29:32,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-26 06:29:32,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-26 06:29:32,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-26 06:29:32,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-26 06:29:32,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-26 06:29:32,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a74d7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32, skipping insertion in model container [2021-08-26 06:29:32,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-26 06:29:32,505 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-26 06:29:32,616 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c[563,576] [2021-08-26 06:29:32,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:29:32,633 INFO L203 MainTranslator]: Completed pre-run [2021-08-26 06:29:32,641 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo1-u_unwindbound2.c[563,576] [2021-08-26 06:29:32,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-26 06:29:32,667 INFO L208 MainTranslator]: Completed translation [2021-08-26 06:29:32,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32 WrapperNode [2021-08-26 06:29:32,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-26 06:29:32,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-26 06:29:32,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-26 06:29:32,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-26 06:29:32,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-26 06:29:32,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-26 06:29:32,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-26 06:29:32,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-26 06:29:32,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-26 06:29:32,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-26 06:29:32,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-26 06:29:32,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-26 06:29:32,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (1/1) ... [2021-08-26 06:29:32,746 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-26 06:29:32,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:29:32,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-26 06:29:32,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-26 06:29:32,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-26 06:29:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-26 06:29:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-26 06:29:32,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-26 06:29:32,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-08-26 06:29:32,977 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-26 06:29:32,977 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-08-26 06:29:32,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:29:32 BoogieIcfgContainer [2021-08-26 06:29:32,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-26 06:29:32,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-26 06:29:32,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-26 06:29:32,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-26 06:29:32,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 06:29:32" (1/3) ... [2021-08-26 06:29:32,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87d698a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:29:32, skipping insertion in model container [2021-08-26 06:29:32,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 06:29:32" (2/3) ... [2021-08-26 06:29:32,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@87d698a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 06:29:32, skipping insertion in model container [2021-08-26 06:29:32,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:29:32" (3/3) ... [2021-08-26 06:29:32,983 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound2.c [2021-08-26 06:29:32,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-26 06:29:32,986 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-26 06:29:33,032 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-26 06:29:33,036 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-26 06:29:33,037 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-26 06:29:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:29:33,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-08-26 06:29:33,049 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:29:33,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-08-26 06:29:33,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:29:33,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:29:33,054 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-08-26 06:29:33,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:29:33,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135905076] [2021-08-26 06:29:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:29:33,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:29:33,113 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:29:33,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [847539709] [2021-08-26 06:29:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:29:33,114 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:29:33,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:29:33,121 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) [2021-08-26 06:29:33,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-26 06:29:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:29:33,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-26 06:29:33,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:29:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:29:33,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:29:33,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135905076] [2021-08-26 06:29:33,329 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:29:33,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847539709] [2021-08-26 06:29:33,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847539709] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:29:33,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:29:33,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-26 06:29:33,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412875893] [2021-08-26 06:29:33,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:29:33,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:29:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:29:33,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:29:33,343 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 15 states have internal predecessors, (20), 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 1.5) internal successors, (6), 4 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) [2021-08-26 06:29:33,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:29:33,390 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2021-08-26 06:29:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-26 06:29:33,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-08-26 06:29:33,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:29:33,396 INFO L225 Difference]: With dead ends: 39 [2021-08-26 06:29:33,396 INFO L226 Difference]: Without dead ends: 21 [2021-08-26 06:29:33,398 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-26 06:29:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-08-26 06:29:33,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2021-08-26 06:29:33,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:29:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-08-26 06:29:33,416 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2021-08-26 06:29:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:29:33,416 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-08-26 06:29:33,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-08-26 06:29:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-08-26 06:29:33,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-26 06:29:33,417 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:29:33,417 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:29:33,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-26 06:29:33,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-08-26 06:29:33,621 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:29:33,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:29:33,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1806862075, now seen corresponding path program 1 times [2021-08-26 06:29:33,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:29:33,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108390492] [2021-08-26 06:29:33,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:29:33,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:29:33,631 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:29:33,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020558849] [2021-08-26 06:29:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:29:33,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:29:33,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:29:33,633 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 06:29:33,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-26 06:29:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-26 06:29:33,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-26 06:29:33,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-26 06:29:33,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-26 06:29:33,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-26 06:29:33,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108390492] [2021-08-26 06:29:33,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-08-26 06:29:33,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020558849] [2021-08-26 06:29:33,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020558849] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-26 06:29:33,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-26 06:29:33,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-26 06:29:33,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045659250] [2021-08-26 06:29:33,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-26 06:29:33,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-26 06:29:33,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-26 06:29:33,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:29:33,737 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:29:33,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-26 06:29:33,749 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-08-26 06:29:33,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-26 06:29:33,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 [2021-08-26 06:29:33,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-26 06:29:33,750 INFO L225 Difference]: With dead ends: 19 [2021-08-26 06:29:33,750 INFO L226 Difference]: Without dead ends: 15 [2021-08-26 06:29:33,751 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.1ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-26 06:29:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-08-26 06:29:33,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-08-26 06:29:33,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:29:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-08-26 06:29:33,753 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-08-26 06:29:33,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-26 06:29:33,753 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-08-26 06:29:33,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-26 06:29:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-08-26 06:29:33,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-26 06:29:33,754 INFO L504 BasicCegarLoop]: Found error trace [2021-08-26 06:29:33,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-26 06:29:33,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-26 06:29:33,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-08-26 06:29:33,957 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-26 06:29:33,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-26 06:29:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1274494228, now seen corresponding path program 1 times [2021-08-26 06:29:33,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-26 06:29:33,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562663967] [2021-08-26 06:29:33,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:29:33,959 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-26 06:29:33,973 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-08-26 06:29:33,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812580488] [2021-08-26 06:29:33,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-26 06:29:33,977 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:29:33,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-26 06:29:33,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-26 06:29:33,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-26 06:29:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:29:34,035 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-26 06:29:34,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-26 06:29:34,061 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-26 06:29:34,061 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-26 06:29:34,062 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:29:34,063 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-26 06:29:34,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-26 06:29:34,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-26 06:29:34,281 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-26 06:29:34,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 06:29:34 BoogieIcfgContainer [2021-08-26 06:29:34,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-26 06:29:34,296 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-26 06:29:34,296 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-26 06:29:34,297 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-26 06:29:34,297 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 06:29:32" (3/4) ... [2021-08-26 06:29:34,298 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-26 06:29:34,320 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-26 06:29:34,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-26 06:29:34,322 INFO L168 Benchmark]: Toolchain (without parser) took 1836.67 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 60.6 MB in the beginning and 48.8 MB in the end (delta: 11.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 16.1 GB. [2021-08-26 06:29:34,322 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 75.5 MB. Free memory is still 58.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:29:34,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.13 ms. Allocated memory is still 75.5 MB. Free memory was 60.4 MB in the beginning and 60.0 MB in the end (delta: 353.8 kB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-08-26 06:29:34,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.93 ms. Allocated memory is still 75.5 MB. Free memory was 60.0 MB in the beginning and 58.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:29:34,323 INFO L168 Benchmark]: Boogie Preprocessor took 30.36 ms. Allocated memory is still 75.5 MB. Free memory was 58.4 MB in the beginning and 57.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-26 06:29:34,323 INFO L168 Benchmark]: RCFGBuilder took 237.65 ms. Allocated memory is still 75.5 MB. Free memory was 57.4 MB in the beginning and 45.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-26 06:29:34,323 INFO L168 Benchmark]: TraceAbstraction took 1317.09 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 44.5 MB in the beginning and 51.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2021-08-26 06:29:34,324 INFO L168 Benchmark]: Witness Printer took 24.11 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 48.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-26 06:29:34,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 75.5 MB. Free memory is still 58.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 182.13 ms. Allocated memory is still 75.5 MB. Free memory was 60.4 MB in the beginning and 60.0 MB in the end (delta: 353.8 kB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.93 ms. Allocated memory is still 75.5 MB. Free memory was 60.0 MB in the beginning and 58.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.36 ms. Allocated memory is still 75.5 MB. Free memory was 58.4 MB in the beginning and 57.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 237.65 ms. Allocated memory is still 75.5 MB. Free memory was 57.4 MB in the beginning and 45.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1317.09 ms. Allocated memory was 75.5 MB in the beginning and 92.3 MB in the end (delta: 16.8 MB). Free memory was 44.5 MB in the beginning and 51.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. * Witness Printer took 24.11 ms. Allocated memory is still 92.3 MB. Free memory was 51.0 MB in the beginning and 48.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_unsigned_int() [L27] k = __VERIFIER_nondet_unsigned_int() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<2 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L36] COND TRUE !(c < k) VAL [counter=1] [L45] x = x * (z - 1) [L16] COND TRUE !(cond) VAL [counter=1] [L18] reach_error() VAL [counter=1] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1248.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 5.5ms, AutomataDifference: 78.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 27 SDtfs, 8 SDslu, 42 SDs, 0 SdLazy, 24 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 29.9ms SsaConstructionTime, 41.3ms SatisfiabilityAnalysisTime, 181.8ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 4 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-26 06:29:34,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...