./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench/geo3-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench/geo3-ll.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 a84b9c8d997e29e6dd212f98dff041043df0de4e5f86f5da66a42f473d3fe422 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 03:02:20,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 03:02:20,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 03:02:20,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 03:02:20,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 03:02:20,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 03:02:20,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 03:02:20,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 03:02:20,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 03:02:20,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 03:02:20,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 03:02:20,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 03:02:20,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 03:02:20,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 03:02:20,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 03:02:20,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 03:02:20,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 03:02:20,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 03:02:20,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 03:02:20,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 03:02:20,432 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 03:02:20,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 03:02:20,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 03:02:20,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 03:02:20,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 03:02:20,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 03:02:20,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 03:02:20,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 03:02:20,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 03:02:20,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 03:02:20,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 03:02:20,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 03:02:20,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 03:02:20,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 03:02:20,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 03:02:20,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 03:02:20,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 03:02:20,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 03:02:20,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 03:02:20,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 03:02:20,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 03:02:20,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 03:02:20,462 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 03:02:20,492 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 03:02:20,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 03:02:20,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 03:02:20,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 03:02:20,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 03:02:20,495 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 03:02:20,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 03:02:20,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 03:02:20,496 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 03:02:20,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 03:02:20,497 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 03:02:20,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 03:02:20,497 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 03:02:20,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 03:02:20,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 03:02:20,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 03:02:20,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 03:02:20,498 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 03:02:20,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 03:02:20,499 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 03:02:20,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 03:02:20,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 03:02:20,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 03:02:20,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 03:02:20,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:02:20,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 03:02:20,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 03:02:20,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 03:02:20,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 03:02:20,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 03:02:20,501 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 03:02:20,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 03:02:20,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 03:02:20,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a84b9c8d997e29e6dd212f98dff041043df0de4e5f86f5da66a42f473d3fe422 [2022-07-21 03:02:20,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 03:02:20,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 03:02:20,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 03:02:20,877 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 03:02:20,878 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 03:02:20,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench/geo3-ll.c [2022-07-21 03:02:20,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dbb49728/0303a9d21b104d70b73e684e8e84c6af/FLAGdc0f195db [2022-07-21 03:02:21,297 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 03:02:21,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench/geo3-ll.c [2022-07-21 03:02:21,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dbb49728/0303a9d21b104d70b73e684e8e84c6af/FLAGdc0f195db [2022-07-21 03:02:21,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dbb49728/0303a9d21b104d70b73e684e8e84c6af [2022-07-21 03:02:21,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 03:02:21,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 03:02:21,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 03:02:21,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 03:02:21,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 03:02:21,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59417de2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21, skipping insertion in model container [2022-07-21 03:02:21,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 03:02:21,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 03:02:21,849 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/nla-digbench/geo3-ll.c[525,538] [2022-07-21 03:02:21,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:02:21,868 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 03:02:21,878 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/nla-digbench/geo3-ll.c[525,538] [2022-07-21 03:02:21,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 03:02:21,910 INFO L208 MainTranslator]: Completed translation [2022-07-21 03:02:21,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21 WrapperNode [2022-07-21 03:02:21,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 03:02:21,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 03:02:21,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 03:02:21,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 03:02:21,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,967 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2022-07-21 03:02:21,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 03:02:21,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 03:02:21,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 03:02:21,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 03:02:21,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 03:02:21,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 03:02:21,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 03:02:21,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 03:02:21,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (1/1) ... [2022-07-21 03:02:21,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 03:02:21,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:02:22,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 03:02:22,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 03:02:22,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 03:02:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 03:02:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 03:02:22,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 03:02:22,056 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-21 03:02:22,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-21 03:02:22,115 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 03:02:22,116 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 03:02:22,263 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 03:02:22,268 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 03:02:22,268 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 03:02:22,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:02:22 BoogieIcfgContainer [2022-07-21 03:02:22,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 03:02:22,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 03:02:22,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 03:02:22,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 03:02:22,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 03:02:21" (1/3) ... [2022-07-21 03:02:22,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65351e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:02:22, skipping insertion in model container [2022-07-21 03:02:22,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 03:02:21" (2/3) ... [2022-07-21 03:02:22,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65351e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 03:02:22, skipping insertion in model container [2022-07-21 03:02:22,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:02:22" (3/3) ... [2022-07-21 03:02:22,278 INFO L111 eAbstractionObserver]: Analyzing ICFG geo3-ll.c [2022-07-21 03:02:22,293 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 03:02:22,294 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 03:02:22,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 03:02:22,356 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@28b30bea, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4030a593 [2022-07-21 03:02:22,357 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 03:02:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:02:22,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 03:02:22,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:02:22,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:02:22,375 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:02:22,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:02:22,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1818803301, now seen corresponding path program 1 times [2022-07-21 03:02:22,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:02:22,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462017724] [2022-07-21 03:02:22,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:02:22,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:02:22,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:02:22,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731366195] [2022-07-21 03:02:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:02:22,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:02:22,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:02:22,491 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) [2022-07-21 03:02:22,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 03:02:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:02:22,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 03:02:22,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:02:22,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:02:22,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:02:22,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:02:22,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462017724] [2022-07-21 03:02:22,605 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:02:22,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731366195] [2022-07-21 03:02:22,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731366195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:02:22,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:02:22,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 03:02:22,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100902668] [2022-07-21 03:02:22,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:02:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 03:02:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:02:22,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 03:02:22,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:02:22,670 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:02:22,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:02:22,684 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2022-07-21 03:02:22,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 03:02:22,686 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 03:02:22,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:02:22,692 INFO L225 Difference]: With dead ends: 30 [2022-07-21 03:02:22,693 INFO L226 Difference]: Without dead ends: 12 [2022-07-21 03:02:22,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 03:02:22,702 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:02:22,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:02:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-21 03:02:22,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-21 03:02:22,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 03:02:22,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-21 03:02:22,736 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2022-07-21 03:02:22,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:02:22,737 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-21 03:02:22,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:02:22,737 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-21 03:02:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-21 03:02:22,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:02:22,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:02:22,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 03:02:22,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-21 03:02:22,960 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:02:22,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:02:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1811355551, now seen corresponding path program 1 times [2022-07-21 03:02:22,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:02:22,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346637581] [2022-07-21 03:02:22,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:02:22,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:02:22,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:02:22,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [390759317] [2022-07-21 03:02:22,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:02:22,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:02:22,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:02:22,976 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) [2022-07-21 03:02:22,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 03:02:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:02:23,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 03:02:23,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:02:23,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:02:23,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 03:02:23,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:02:23,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346637581] [2022-07-21 03:02:23,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:02:23,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390759317] [2022-07-21 03:02:23,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390759317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 03:02:23,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 03:02:23,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 03:02:23,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785670977] [2022-07-21 03:02:23,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 03:02:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 03:02:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:02:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 03:02:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 03:02:23,120 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:02:23,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:02:23,162 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-07-21 03:02:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 03:02:23,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-21 03:02:23,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:02:23,164 INFO L225 Difference]: With dead ends: 22 [2022-07-21 03:02:23,164 INFO L226 Difference]: Without dead ends: 19 [2022-07-21 03:02:23,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 03:02:23,166 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 03:02:23,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 33 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 03:02:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-21 03:02:23,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-21 03:02:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:02:23,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-21 03:02:23,172 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 7 [2022-07-21 03:02:23,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:02:23,172 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-21 03:02:23,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:02:23,173 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-21 03:02:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 03:02:23,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 03:02:23,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 03:02:23,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 03:02:23,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-21 03:02:23,388 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 03:02:23,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 03:02:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash 614685336, now seen corresponding path program 1 times [2022-07-21 03:02:23,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 03:02:23,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391154094] [2022-07-21 03:02:23,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:02:23,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 03:02:23,398 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-21 03:02:23,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149556851] [2022-07-21 03:02:23,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 03:02:23,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:02:23,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 03:02:23,407 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) [2022-07-21 03:02:23,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 03:02:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 03:02:23,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-21 03:02:23,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 03:02:23,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:02:23,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 03:02:24,085 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 03:02:24,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 03:02:24,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391154094] [2022-07-21 03:02:24,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-21 03:02:24,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149556851] [2022-07-21 03:02:24,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149556851] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 03:02:24,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 03:02:24,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-07-21 03:02:24,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687221666] [2022-07-21 03:02:24,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 03:02:24,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 03:02:24,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 03:02:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 03:02:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-21 03:02:24,091 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:02:24,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 03:02:24,645 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-21 03:02:24,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 03:02:24,646 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2022-07-21 03:02:24,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 03:02:24,647 INFO L225 Difference]: With dead ends: 23 [2022-07-21 03:02:24,647 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 03:02:24,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-21 03:02:24,648 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 03:02:24,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 34 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 03:02:24,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 03:02:24,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 03:02:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 03:02:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 03:02:24,650 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-07-21 03:02:24,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 03:02:24,650 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 03:02:24,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 03:02:24,651 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 03:02:24,651 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 03:02:24,653 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 03:02:24,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 03:02:24,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 03:02:24,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 03:02:25,039 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 33 42) no Hoare annotation was computed. [2022-07-21 03:02:25,039 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 03:02:25,039 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 03:02:25,040 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 42) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|))) [2022-07-21 03:02:25,040 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 42) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|))) [2022-07-21 03:02:25,040 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 03:02:25,040 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 03:02:25,040 INFO L902 garLoopResultBuilder]: At program point L44(lines 21 45) the Hoare annotation is: true [2022-07-21 03:02:25,041 INFO L899 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2022-07-21 03:02:25,041 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~az~0#1| |ULTIMATE.start_main_~y~0#1|))) [2022-07-21 03:02:25,041 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-21 03:02:25,041 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-21 03:02:25,041 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-21 03:02:25,041 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-21 03:02:25,042 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-21 03:02:25,042 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-21 03:02:25,045 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-21 03:02:25,046 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 03:02:25,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 03:02:25 BoogieIcfgContainer [2022-07-21 03:02:25,057 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 03:02:25,058 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 03:02:25,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 03:02:25,058 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 03:02:25,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 03:02:22" (3/4) ... [2022-07-21 03:02:25,061 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 03:02:25,066 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-21 03:02:25,068 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-07-21 03:02:25,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-21 03:02:25,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 03:02:25,069 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 03:02:25,094 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 03:02:25,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 03:02:25,095 INFO L158 Benchmark]: Toolchain (without parser) took 3370.23ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 43.2MB in the end (delta: 702.0kB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2022-07-21 03:02:25,095 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 62.9MB. Free memory was 44.9MB in the beginning and 44.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:02:25,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.91ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 47.5MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 03:02:25,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.80ms. Allocated memory is still 62.9MB. Free memory was 47.5MB in the beginning and 45.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:02:25,096 INFO L158 Benchmark]: Boogie Preprocessor took 14.88ms. Allocated memory is still 62.9MB. Free memory was 45.9MB in the beginning and 45.0MB in the end (delta: 970.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 03:02:25,097 INFO L158 Benchmark]: RCFGBuilder took 285.79ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 36.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 03:02:25,097 INFO L158 Benchmark]: TraceAbstraction took 2786.25ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 35.6MB in the beginning and 45.6MB in the end (delta: -10.1MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-07-21 03:02:25,097 INFO L158 Benchmark]: Witness Printer took 36.55ms. Allocated memory is still 77.6MB. Free memory was 45.6MB in the beginning and 43.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 03:02:25,099 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 62.9MB. Free memory was 44.9MB in the beginning and 44.8MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.91ms. Allocated memory is still 62.9MB. Free memory was 43.7MB in the beginning and 47.5MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.80ms. Allocated memory is still 62.9MB. Free memory was 47.5MB in the beginning and 45.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.88ms. Allocated memory is still 62.9MB. Free memory was 45.9MB in the beginning and 45.0MB in the end (delta: 970.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 285.79ms. Allocated memory is still 62.9MB. Free memory was 45.0MB in the beginning and 36.1MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2786.25ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 35.6MB in the beginning and 45.6MB in the end (delta: -10.1MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Witness Printer took 36.55ms. Allocated memory is still 77.6MB. Free memory was 45.6MB in the beginning and 43.2MB in the end (delta: 2.4MB). 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 84 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 36 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 12 PreInvPairs, 22 NumberOfFragments, 35 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 87 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 195 SizeOfPredicates, 3 NumberOfNonLiveVariables, 164 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/8 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: x * z + a == x + az * y RESULT: Ultimate proved your program to be correct! [2022-07-21 03:02:25,116 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 Result: TRUE