./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/sqrt1-ll_unwindbound20.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 4b6ae28789704f5fd465d11d450ce27cd9b971ac76fe8e36268d0ace5b5b057f --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 19:33:05,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 19:33:05,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 19:33:05,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 19:33:05,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 19:33:05,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 19:33:05,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 19:33:05,222 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 19:33:05,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 19:33:05,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 19:33:05,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 19:33:05,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 19:33:05,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 19:33:05,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 19:33:05,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 19:33:05,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 19:33:05,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 19:33:05,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 19:33:05,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 19:33:05,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 19:33:05,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 19:33:05,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 19:33:05,250 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 19:33:05,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 19:33:05,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 19:33:05,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 19:33:05,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 19:33:05,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 19:33:05,259 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 19:33:05,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 19:33:05,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 19:33:05,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 19:33:05,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 19:33:05,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 19:33:05,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 19:33:05,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 19:33:05,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 19:33:05,264 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 19:33:05,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 19:33:05,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 19:33:05,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 19:33:05,267 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 19:33:05,296 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 19:33:05,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 19:33:05,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 19:33:05,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 19:33:05,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 19:33:05,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 19:33:05,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 19:33:05,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 19:33:05,299 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 19:33:05,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 19:33:05,299 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 19:33:05,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 19:33:05,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 19:33:05,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 19:33:05,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 19:33:05,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 19:33:05,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 19:33:05,301 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 19:33:05,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 19:33:05,301 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 19:33:05,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 19:33:05,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 19:33:05,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 19:33:05,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 19:33:05,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 19:33:05,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 19:33:05,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 19:33:05,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 19:33:05,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 19:33:05,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 19:33:05,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 19:33:05,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 19:33:05,303 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 19:33:05,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 19:33:05,303 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 19:33:05,303 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b6ae28789704f5fd465d11d450ce27cd9b971ac76fe8e36268d0ace5b5b057f [2023-02-18 19:33:05,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 19:33:05,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 19:33:05,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 19:33:05,524 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 19:33:05,525 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 19:33:05,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2023-02-18 19:33:06,521 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 19:33:06,720 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 19:33:06,721 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound20.c [2023-02-18 19:33:06,725 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2aed7a20/d3717183a4f64a6da5e1e9d0f47b1c4e/FLAGe00c499d2 [2023-02-18 19:33:06,735 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2aed7a20/d3717183a4f64a6da5e1e9d0f47b1c4e [2023-02-18 19:33:06,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 19:33:06,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 19:33:06,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 19:33:06,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 19:33:06,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 19:33:06,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2da9be47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06, skipping insertion in model container [2023-02-18 19:33:06,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 19:33:06,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 19:33:06,868 WARN L237 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/sqrt1-ll_unwindbound20.c[520,533] [2023-02-18 19:33:06,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 19:33:06,898 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 19:33:06,911 WARN L237 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/sqrt1-ll_unwindbound20.c[520,533] [2023-02-18 19:33:06,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 19:33:06,936 INFO L208 MainTranslator]: Completed translation [2023-02-18 19:33:06,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06 WrapperNode [2023-02-18 19:33:06,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 19:33:06,938 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 19:33:06,938 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 19:33:06,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 19:33:06,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,964 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2023-02-18 19:33:06,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 19:33:06,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 19:33:06,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 19:33:06,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 19:33:06,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,994 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:06,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 19:33:07,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 19:33:07,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 19:33:07,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 19:33:07,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (1/1) ... [2023-02-18 19:33:07,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 19:33:07,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:33:07,029 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) [2023-02-18 19:33:07,048 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 [2023-02-18 19:33:07,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 19:33:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 19:33:07,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 19:33:07,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 19:33:07,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 19:33:07,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 19:33:07,109 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 19:33:07,111 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 19:33:07,254 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 19:33:07,258 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 19:33:07,261 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 19:33:07,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:33:07 BoogieIcfgContainer [2023-02-18 19:33:07,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 19:33:07,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 19:33:07,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 19:33:07,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 19:33:07,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:33:06" (1/3) ... [2023-02-18 19:33:07,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2895c2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:33:07, skipping insertion in model container [2023-02-18 19:33:07,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:33:06" (2/3) ... [2023-02-18 19:33:07,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2895c2fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:33:07, skipping insertion in model container [2023-02-18 19:33:07,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:33:07" (3/3) ... [2023-02-18 19:33:07,273 INFO L112 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound20.c [2023-02-18 19:33:07,292 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 19:33:07,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 19:33:07,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 19:33:07,337 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5817b75f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 19:33:07,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 19:33:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 19:33:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 19:33:07,346 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:33:07,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:33:07,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:33:07,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:33:07,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1821846948, now seen corresponding path program 1 times [2023-02-18 19:33:07,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:33:07,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269307440] [2023-02-18 19:33:07,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:07,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:33:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:33:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:33:07,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:33:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269307440] [2023-02-18 19:33:07,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269307440] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:33:07,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:33:07,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 19:33:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292198607] [2023-02-18 19:33:07,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:33:07,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 19:33:07,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:33:07,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 19:33:07,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 19:33:07,478 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2023-02-18 19:33:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:33:07,497 INFO L93 Difference]: Finished difference Result 40 states and 62 transitions. [2023-02-18 19:33:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 19:33:07,499 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 [2023-02-18 19:33:07,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:33:07,504 INFO L225 Difference]: With dead ends: 40 [2023-02-18 19:33:07,504 INFO L226 Difference]: Without dead ends: 17 [2023-02-18 19:33:07,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 19:33:07,510 INFO L413 NwaCegarLoop]: 27 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, 27 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 [2023-02-18 19:33:07,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:33:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-18 19:33:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-18 19:33:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 19:33:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2023-02-18 19:33:07,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 7 [2023-02-18 19:33:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:33:07,536 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2023-02-18 19:33:07,537 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) [2023-02-18 19:33:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2023-02-18 19:33:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 19:33:07,538 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:33:07,538 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:33:07,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 19:33:07,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:33:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:33:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash 178653015, now seen corresponding path program 1 times [2023-02-18 19:33:07,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:33:07,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756455155] [2023-02-18 19:33:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:07,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:33:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:33:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:33:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:33:07,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756455155] [2023-02-18 19:33:07,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756455155] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:33:07,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:33:07,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 19:33:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040459258] [2023-02-18 19:33:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:33:07,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 19:33:07,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:33:07,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 19:33:07,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 19:33:07,646 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-18 19:33:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:33:07,672 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2023-02-18 19:33:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 19:33:07,672 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), 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 8 [2023-02-18 19:33:07,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:33:07,675 INFO L225 Difference]: With dead ends: 28 [2023-02-18 19:33:07,675 INFO L226 Difference]: Without dead ends: 19 [2023-02-18 19:33:07,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 19:33:07,680 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:33:07,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:33:07,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-18 19:33:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-18 19:33:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 19:33:07,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-02-18 19:33:07,689 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 8 [2023-02-18 19:33:07,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:33:07,689 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-02-18 19:33:07,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-02-18 19:33:07,690 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-02-18 19:33:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 19:33:07,690 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:33:07,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:33:07,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 19:33:07,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:33:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:33:07,692 INFO L85 PathProgramCache]: Analyzing trace with hash 180321311, now seen corresponding path program 1 times [2023-02-18 19:33:07,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:33:07,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774656260] [2023-02-18 19:33:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:07,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:33:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:33:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:33:07,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:33:07,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774656260] [2023-02-18 19:33:07,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774656260] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 19:33:07,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 19:33:07,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 19:33:07,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235188297] [2023-02-18 19:33:07,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:33:07,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 19:33:07,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:33:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 19:33:07,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 19:33:07,864 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-18 19:33:07,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:33:07,922 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2023-02-18 19:33:07,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 19:33:07,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2023-02-18 19:33:07,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:33:07,923 INFO L225 Difference]: With dead ends: 32 [2023-02-18 19:33:07,923 INFO L226 Difference]: Without dead ends: 30 [2023-02-18 19:33:07,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 19:33:07,925 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:33:07,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 69 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:33:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-18 19:33:07,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-02-18 19:33:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 19:33:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2023-02-18 19:33:07,947 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 8 [2023-02-18 19:33:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:33:07,947 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2023-02-18 19:33:07,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-18 19:33:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2023-02-18 19:33:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 19:33:07,948 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:33:07,949 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:33:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 19:33:07,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:33:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:33:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1242689983, now seen corresponding path program 1 times [2023-02-18 19:33:07,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:33:07,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271107192] [2023-02-18 19:33:07,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:07,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:33:07,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:33:07,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280559466] [2023-02-18 19:33:07,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:07,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:33:07,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:33:07,984 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) [2023-02-18 19:33:07,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 19:33:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:33:08,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 19:33:08,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:33:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:33:08,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:33:08,254 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 19:33:08,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:33:08,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271107192] [2023-02-18 19:33:08,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:33:08,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280559466] [2023-02-18 19:33:08,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280559466] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:33:08,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 19:33:08,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-18 19:33:08,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908400936] [2023-02-18 19:33:08,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 19:33:08,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 19:33:08,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:33:08,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 19:33:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-18 19:33:08,258 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:33:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:33:08,365 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2023-02-18 19:33:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 19:33:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 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 13 [2023-02-18 19:33:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:33:08,372 INFO L225 Difference]: With dead ends: 40 [2023-02-18 19:33:08,372 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 19:33:08,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-18 19:33:08,373 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:33:08,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 42 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:33:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 19:33:08,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2023-02-18 19:33:08,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 19:33:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-02-18 19:33:08,397 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 13 [2023-02-18 19:33:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:33:08,398 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-02-18 19:33:08,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 19:33:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-02-18 19:33:08,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 19:33:08,399 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:33:08,399 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:33:08,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 19:33:08,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:33:08,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:33:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:33:08,606 INFO L85 PathProgramCache]: Analyzing trace with hash 259746456, now seen corresponding path program 1 times [2023-02-18 19:33:08,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:33:08,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142805450] [2023-02-18 19:33:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:08,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:33:08,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:33:08,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494982585] [2023-02-18 19:33:08,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:08,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:33:08,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:33:08,615 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) [2023-02-18 19:33:08,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 19:33:08,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:33:08,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 19:33:08,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:33:08,677 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 19:33:08,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:33:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 19:33:08,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:33:08,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142805450] [2023-02-18 19:33:08,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:33:08,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494982585] [2023-02-18 19:33:08,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494982585] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:33:08,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 19:33:08,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-18 19:33:08,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898117501] [2023-02-18 19:33:08,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 19:33:08,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 19:33:08,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:33:08,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 19:33:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-18 19:33:08,715 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 19:33:08,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:33:08,820 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2023-02-18 19:33:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 19:33:08,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 26 [2023-02-18 19:33:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:33:08,824 INFO L225 Difference]: With dead ends: 88 [2023-02-18 19:33:08,824 INFO L226 Difference]: Without dead ends: 75 [2023-02-18 19:33:08,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-18 19:33:08,828 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 33 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:33:08,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 150 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:33:08,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-18 19:33:08,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2023-02-18 19:33:08,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.170731707317073) internal successors, (48), 44 states have internal predecessors, (48), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-18 19:33:08,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2023-02-18 19:33:08,855 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 26 [2023-02-18 19:33:08,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:33:08,856 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2023-02-18 19:33:08,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 19:33:08,856 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2023-02-18 19:33:08,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 19:33:08,857 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:33:08,857 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 19:33:08,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 19:33:09,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:33:09,081 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:33:09,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:33:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash 261414752, now seen corresponding path program 1 times [2023-02-18 19:33:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:33:09,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055424524] [2023-02-18 19:33:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:09,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:33:09,099 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:33:09,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526377084] [2023-02-18 19:33:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:09,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:33:09,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:33:09,102 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) [2023-02-18 19:33:09,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 19:33:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 19:33:09,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 19:33:09,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:33:09,168 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-18 19:33:09,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:33:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 19:33:09,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:33:09,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055424524] [2023-02-18 19:33:09,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:33:09,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526377084] [2023-02-18 19:33:09,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526377084] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 19:33:09,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 19:33:09,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-02-18 19:33:09,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592084790] [2023-02-18 19:33:09,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 19:33:09,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 19:33:09,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:33:09,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 19:33:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-18 19:33:09,206 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 19:33:09,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:33:09,253 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2023-02-18 19:33:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 19:33:09,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-02-18 19:33:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:33:09,257 INFO L225 Difference]: With dead ends: 85 [2023-02-18 19:33:09,257 INFO L226 Difference]: Without dead ends: 83 [2023-02-18 19:33:09,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-18 19:33:09,259 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 19:33:09,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 45 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 19:33:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-18 19:33:09,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-02-18 19:33:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.14) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-18 19:33:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2023-02-18 19:33:09,292 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 26 [2023-02-18 19:33:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:33:09,292 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2023-02-18 19:33:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-18 19:33:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2023-02-18 19:33:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 19:33:09,294 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 19:33:09,294 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-18 19:33:09,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 19:33:09,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:33:09,498 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 19:33:09,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 19:33:09,499 INFO L85 PathProgramCache]: Analyzing trace with hash 854826784, now seen corresponding path program 2 times [2023-02-18 19:33:09,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 19:33:09,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253697874] [2023-02-18 19:33:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 19:33:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 19:33:09,512 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 19:33:09,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111916606] [2023-02-18 19:33:09,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 19:33:09,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:33:09,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 19:33:09,520 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 19:33:09,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 19:33:09,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 19:33:09,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 19:33:09,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 19:33:09,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 19:33:09,631 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 19:33:09,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 19:33:09,741 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 19:33:09,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 19:33:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253697874] [2023-02-18 19:33:09,742 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 19:33:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111916606] [2023-02-18 19:33:09,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111916606] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 19:33:09,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 19:33:09,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-18 19:33:09,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55435558] [2023-02-18 19:33:09,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 19:33:09,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 19:33:09,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 19:33:09,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 19:33:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-18 19:33:09,746 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 19:33:09,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 19:33:09,919 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2023-02-18 19:33:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 19:33:09,920 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 36 [2023-02-18 19:33:09,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 19:33:09,920 INFO L225 Difference]: With dead ends: 83 [2023-02-18 19:33:09,920 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 19:33:09,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-18 19:33:09,921 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 19:33:09,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 75 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 19:33:09,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 19:33:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 19:33:09,922 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) [2023-02-18 19:33:09,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 19:33:09,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2023-02-18 19:33:09,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 19:33:09,923 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 19:33:09,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-18 19:33:09,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 19:33:09,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 19:33:09,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 19:33:09,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-18 19:33:10,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 19:33:10,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 19:33:10,135 INFO L899 garLoopResultBuilder]: For program point L33(lines 30 42) no Hoare annotation was computed. [2023-02-18 19:33:10,136 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 19:33:10,136 INFO L895 garLoopResultBuilder]: At program point L31(line 31) the Hoare annotation is: (let ((.cse4 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse4)))) (let ((.cse0 (or (not .cse1) (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (.cse2 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|)))))) (or (and .cse0 .cse1 (< ~counter~0 19) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (and .cse0 .cse2 .cse1 (< ~counter~0 20)) (let ((.cse3 (+ .cse4 1))) (and (= 1 .cse3) (= .cse3 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 (= |ULTIMATE.start_main_~s~0#1| 1) (<= (+ ~counter~0 (- 1)) 0))) (and .cse0 .cse2 .cse1))))) [2023-02-18 19:33:10,137 INFO L895 garLoopResultBuilder]: At program point L31-1(line 31) the Hoare annotation is: (let ((.cse2 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse3 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse2))) (.cse4 (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (or (let ((.cse0 (+ .cse2 1))) (and (= 1 .cse0) (= .cse0 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 (= |ULTIMATE.start_main_~s~0#1| 1) (<= (+ ~counter~0 (- 1)) 0))) (and .cse3 .cse1 (< ~counter~0 20) .cse4) (and .cse3 .cse1 .cse4) (and .cse1 (< ~counter~0 19) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) .cse4 (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1))))) [2023-02-18 19:33:10,137 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-02-18 19:33:10,137 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|)))) (.cse2 (= |ULTIMATE.start_main_~s~0#1| (let ((.cse3 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse3 .cse3))))) (or (and .cse0 .cse1 (< ~counter~0 20) .cse2) (and .cse0 .cse1 .cse2) (and .cse1 (< ~counter~0 19) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) .cse2 (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (and (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2023-02-18 19:33:10,137 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 19:33:10,137 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 21 49) the Hoare annotation is: true [2023-02-18 19:33:10,138 INFO L895 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: (let ((.cse2 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse3 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse2))) (.cse4 (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (or (let ((.cse0 (+ .cse2 1))) (and (= 1 .cse0) (= .cse0 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 (= |ULTIMATE.start_main_~s~0#1| 1) (<= (+ ~counter~0 (- 1)) 0))) (and .cse3 .cse1 (< ~counter~0 20) .cse4) (and .cse3 .cse1 .cse4) (and .cse1 (< ~counter~0 19) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) .cse4 (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1))))) [2023-02-18 19:33:10,138 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 19:33:10,138 INFO L899 garLoopResultBuilder]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2023-02-18 19:33:10,138 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 19:33:10,138 INFO L895 garLoopResultBuilder]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse4 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse4)))) (let ((.cse0 (or (not .cse1) (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (.cse2 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|)))))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) (<= (+ ~counter~0 (- 1)) 0) (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (and .cse0 .cse2 .cse1 (< ~counter~0 20)) (let ((.cse3 (+ .cse4 1))) (and (= 1 .cse3) (= .cse3 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) .cse1 (= |ULTIMATE.start_main_~s~0#1| 1) (<= ~counter~0 0) (= ~counter~0 0))) (and .cse0 .cse2 .cse1) (and .cse0 .cse2 .cse1 (< ~counter~0 19)))))) [2023-02-18 19:33:10,139 INFO L895 garLoopResultBuilder]: At program point L30-4(lines 30 42) the Hoare annotation is: (let ((.cse4 (* 2 |ULTIMATE.start_main_~a~0#1|))) (let ((.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 .cse4)))) (let ((.cse0 (or (not .cse1) (= |ULTIMATE.start_main_~s~0#1| (let ((.cse5 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse5 .cse5))))) (.cse2 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|)))))) (or (and .cse0 .cse1 (< ~counter~0 19) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (and .cse0 .cse2 .cse1 (< ~counter~0 20)) (let ((.cse3 (+ .cse4 1))) (and (= 1 .cse3) (= .cse3 |ULTIMATE.start_main_~t~0#1|) (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| 1))) (and .cse0 .cse2 .cse1))))) [2023-02-18 19:33:10,139 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (let ((.cse0 (= 0 (+ 1 (+ (+ (* |ULTIMATE.start_main_~t~0#1| |ULTIMATE.start_main_~t~0#1|) (- (* 4 |ULTIMATE.start_main_~s~0#1|))) (* 2 |ULTIMATE.start_main_~t~0#1|))))) (.cse1 (= |ULTIMATE.start_main_~t~0#1| (+ 1 (* 2 |ULTIMATE.start_main_~a~0#1|)))) (.cse2 (= |ULTIMATE.start_main_~s~0#1| (let ((.cse3 (+ 1 |ULTIMATE.start_main_~a~0#1|))) (* .cse3 .cse3))))) (or (and .cse0 .cse1 (< ~counter~0 20) .cse2) (and .cse0 .cse1 .cse2) (and .cse1 (< ~counter~0 19) (= |ULTIMATE.start_main_~t~0#1| (+ 2 1)) .cse2 (= (+ |ULTIMATE.start_main_~s~0#1| (* |ULTIMATE.start_main_~t~0#1| (- 1))) 1)) (and (= |ULTIMATE.start_main_~t~0#1| 1) (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2023-02-18 19:33:10,139 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-02-18 19:33:10,139 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-02-18 19:33:10,139 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-02-18 19:33:10,139 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-02-18 19:33:10,140 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: (let ((.cse3 (= 0 |__VERIFIER_assert_#in~cond|)) (.cse9 (< ~counter~0 19)) (.cse2 (<= (+ ~counter~0 (- 1)) 0)) (.cse0 (= |__VERIFIER_assert_#in~cond| 1)) (.cse7 (< ~counter~0 20))) (let ((.cse6 (not .cse7)) (.cse4 (not .cse0)) (.cse5 (not .cse2)) (.cse8 (not .cse9)) (.cse1 (not .cse3))) (and (or (and .cse0 .cse1 .cse2) .cse3 .cse4 .cse5) (or .cse6 .cse4 (and .cse0 .cse7)) (or .cse4 .cse8 (and .cse0 .cse9)) (or .cse3 .cse6 (and .cse1 .cse7)) (or .cse4 .cse5 (and .cse0 .cse2)) (or .cse3 .cse8 (and .cse1 .cse9))))) [2023-02-18 19:33:10,140 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-02-18 19:33:10,157 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2023-02-18 19:33:10,159 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 19:33:10,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 07:33:10 BoogieIcfgContainer [2023-02-18 19:33:10,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 19:33:10,172 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 19:33:10,172 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 19:33:10,172 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 19:33:10,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:33:07" (3/4) ... [2023-02-18 19:33:10,181 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 19:33:10,186 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-18 19:33:10,192 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-02-18 19:33:10,192 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 19:33:10,192 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 19:33:10,193 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 19:33:10,214 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 19:33:10,214 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 19:33:10,215 INFO L158 Benchmark]: Toolchain (without parser) took 3476.34ms. Allocated memory is still 157.3MB. Free memory was 120.6MB in the beginning and 82.7MB in the end (delta: 37.9MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2023-02-18 19:33:10,215 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 123.7MB. Free memory was 89.6MB in the beginning and 89.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 19:33:10,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.99ms. Allocated memory is still 157.3MB. Free memory was 120.6MB in the beginning and 110.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 19:33:10,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.91ms. Allocated memory is still 157.3MB. Free memory was 110.1MB in the beginning and 108.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 19:33:10,216 INFO L158 Benchmark]: Boogie Preprocessor took 34.12ms. Allocated memory is still 157.3MB. Free memory was 108.7MB in the beginning and 108.0MB in the end (delta: 759.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 19:33:10,216 INFO L158 Benchmark]: RCFGBuilder took 265.11ms. Allocated memory is still 157.3MB. Free memory was 108.0MB in the beginning and 97.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 19:33:10,216 INFO L158 Benchmark]: TraceAbstraction took 2904.49ms. Allocated memory is still 157.3MB. Free memory was 97.5MB in the beginning and 84.8MB in the end (delta: 12.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2023-02-18 19:33:10,216 INFO L158 Benchmark]: Witness Printer took 42.68ms. Allocated memory is still 157.3MB. Free memory was 84.8MB in the beginning and 82.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 19:33:10,217 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 123.7MB. Free memory was 89.6MB in the beginning and 89.6MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 197.99ms. Allocated memory is still 157.3MB. Free memory was 120.6MB in the beginning and 110.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.91ms. Allocated memory is still 157.3MB. Free memory was 110.1MB in the beginning and 108.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.12ms. Allocated memory is still 157.3MB. Free memory was 108.7MB in the beginning and 108.0MB in the end (delta: 759.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 265.11ms. Allocated memory is still 157.3MB. Free memory was 108.0MB in the beginning and 97.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2904.49ms. Allocated memory is still 157.3MB. Free memory was 97.5MB in the beginning and 84.8MB in the end (delta: 12.7MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * Witness Printer took 42.68ms. Allocated memory is still 157.3MB. Free memory was 84.8MB in the beginning and 82.7MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 7, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 467 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 312 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 465 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 155 mSDtfsCounter, 465 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 213 GetRequests, 161 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=6, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 44 PreInvPairs, 74 NumberOfFragments, 1144 HoareAnnotationTreeSize, 44 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 970 SizeOfPredicates, 11 NumberOfNonLiveVariables, 340 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 156/196 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: 30]: Loop Invariant Derived loop invariant: ((((((((!(t == 1 + 2 * a) || s == (1 + a) * (1 + a)) && t == 1 + 2 * a) && t == 2 + 1) && counter + -1 <= 0) && s + t * -1 == 1) || ((((!(t == 1 + 2 * a) || s == (1 + a) * (1 + a)) && 0 == 1 + (t * t + -(4 * s) + 2 * t)) && t == 1 + 2 * a) && counter < 20)) || (((((((1 == 2 * a + 1 && 2 * a + 1 == t) && t == 1) && a == 0) && t == 1 + 2 * a) && s == 1) && counter <= 0) && counter == 0)) || (((!(t == 1 + 2 * a) || s == (1 + a) * (1 + a)) && 0 == 1 + (t * t + -(4 * s) + 2 * t)) && t == 1 + 2 * a)) || ((((!(t == 1 + 2 * a) || s == (1 + a) * (1 + a)) && 0 == 1 + (t * t + -(4 * s) + 2 * t)) && t == 1 + 2 * a) && counter < 19) RESULT: Ultimate proved your program to be correct! [2023-02-18 19:33:10,231 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE