./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/bresenham-ll_valuebound10.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 4018f196b5be3ea7c518259557cd649a90434a9cacf1ef4108caf962c0feb788 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:31:38,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:31:38,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:31:38,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:31:38,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:31:38,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:31:38,875 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:31:38,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:31:38,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:31:38,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:31:38,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:31:38,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:31:38,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:31:38,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:31:38,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:31:38,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:31:38,892 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:31:38,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:31:38,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:31:38,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:31:38,900 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:31:38,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:31:38,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:31:38,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:31:38,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:31:38,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:31:38,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:31:38,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:31:38,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:31:38,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:31:38,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:31:38,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:31:38,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:31:38,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:31:38,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:31:38,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:31:38,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:31:38,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:31:38,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:31:38,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:31:38,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:31:38,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:31:38,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:31:38,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:31:38,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:31:38,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:31:38,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:31:38,935 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:31:38,935 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:31:38,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:31:38,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:31:38,936 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:31:38,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:31:38,937 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:31:38,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:31:38,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:31:38,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:31:38,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:31:38,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:31:38,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:31:38,938 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:31:38,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:31:38,938 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:31:38,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:31:38,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:31:38,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:31:38,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:31:38,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:31:38,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:31:38,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:31:38,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:31:38,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:31:38,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:31:38,941 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:31:38,941 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:31:38,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:31:38,941 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4018f196b5be3ea7c518259557cd649a90434a9cacf1ef4108caf962c0feb788 [2022-07-19 15:31:39,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:31:39,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:31:39,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:31:39,186 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:31:39,186 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:31:39,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c [2022-07-19 15:31:39,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c36f5b48/60c3246ab4f54c209e84c0fc613e47cb/FLAGac4b21ce0 [2022-07-19 15:31:39,524 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:31:39,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c [2022-07-19 15:31:39,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c36f5b48/60c3246ab4f54c209e84c0fc613e47cb/FLAGac4b21ce0 [2022-07-19 15:31:39,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c36f5b48/60c3246ab4f54c209e84c0fc613e47cb [2022-07-19 15:31:39,970 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:31:39,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:31:39,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:31:39,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:31:39,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:31:39,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:31:39" (1/1) ... [2022-07-19 15:31:39,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1935cfbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:39, skipping insertion in model container [2022-07-19 15:31:39,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:31:39" (1/1) ... [2022-07-19 15:31:39,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:31:40,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:31:40,149 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c[597,610] [2022-07-19 15:31:40,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:31:40,182 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:31:40,193 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_valuebound10.c[597,610] [2022-07-19 15:31:40,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:31:40,221 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:31:40,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40 WrapperNode [2022-07-19 15:31:40,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:31:40,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:31:40,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:31:40,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:31:40,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,264 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-07-19 15:31:40,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:31:40,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:31:40,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:31:40,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:31:40,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:31:40,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:31:40,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:31:40,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:31:40,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (1/1) ... [2022-07-19 15:31:40,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:31:40,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:40,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 15:31:40,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 15:31:40,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:31:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 15:31:40,380 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 15:31:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:31:40,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:31:40,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:31:40,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:31:40,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:31:40,427 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:31:40,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:31:40,546 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:31:40,550 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:31:40,550 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:31:40,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:31:40 BoogieIcfgContainer [2022-07-19 15:31:40,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:31:40,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:31:40,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:31:40,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:31:40,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:31:39" (1/3) ... [2022-07-19 15:31:40,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d89b7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:31:40, skipping insertion in model container [2022-07-19 15:31:40,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:31:40" (2/3) ... [2022-07-19 15:31:40,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d89b7e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:31:40, skipping insertion in model container [2022-07-19 15:31:40,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:31:40" (3/3) ... [2022-07-19 15:31:40,557 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_valuebound10.c [2022-07-19 15:31:40,566 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:31:40,573 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:31:40,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:31:40,654 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e5cfa05, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5fffb5e0 [2022-07-19 15:31:40,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:31:40,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 15:31:40,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 15:31:40,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:40,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:40,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:40,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:40,678 INFO L85 PathProgramCache]: Analyzing trace with hash 689891435, now seen corresponding path program 1 times [2022-07-19 15:31:40,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:40,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648800164] [2022-07-19 15:31:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:40,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:31:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 15:31:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:31:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 15:31:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:31:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 15:31:40,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:40,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648800164] [2022-07-19 15:31:40,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648800164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:31:40,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:31:40,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:31:40,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210680472] [2022-07-19 15:31:40,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:31:40,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:31:40,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:40,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:31:40,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:31:40,900 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.368421052631579) internal successors, (26), 20 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:31:40,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:31:40,911 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2022-07-19 15:31:40,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:31:40,913 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-07-19 15:31:40,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:31:40,918 INFO L225 Difference]: With dead ends: 51 [2022-07-19 15:31:40,918 INFO L226 Difference]: Without dead ends: 23 [2022-07-19 15:31:40,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:31:40,922 INFO L413 NwaCegarLoop]: 30 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, 30 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:31:40,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:31:40,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-19 15:31:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-19 15:31:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 15:31:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-07-19 15:31:40,944 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 19 [2022-07-19 15:31:40,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:31:40,945 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-07-19 15:31:40,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-19 15:31:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-07-19 15:31:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 15:31:40,946 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:40,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:40,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 15:31:40,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:40,948 INFO L85 PathProgramCache]: Analyzing trace with hash 90086127, now seen corresponding path program 1 times [2022-07-19 15:31:40,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:40,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910873865] [2022-07-19 15:31:40,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:40,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:40,960 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:31:40,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1207670523] [2022-07-19 15:31:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:40,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:40,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:40,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:31:40,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 15:31:41,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:31:41,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 15:31:41,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:41,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 15:31:41,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:31:41,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:41,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910873865] [2022-07-19 15:31:41,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:31:41,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207670523] [2022-07-19 15:31:41,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207670523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:31:41,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:31:41,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 15:31:41,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530143311] [2022-07-19 15:31:41,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:31:41,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 15:31:41,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:41,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 15:31:41,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:31:41,141 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 15:31:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:31:41,227 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-19 15:31:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 15:31:41,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-19 15:31:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:31:41,230 INFO L225 Difference]: With dead ends: 35 [2022-07-19 15:31:41,230 INFO L226 Difference]: Without dead ends: 31 [2022-07-19 15:31:41,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:31:41,232 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:31:41,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:31:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-19 15:31:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2022-07-19 15:31:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 15:31:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-07-19 15:31:41,240 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2022-07-19 15:31:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:31:41,242 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-07-19 15:31:41,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 15:31:41,242 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-07-19 15:31:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 15:31:41,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:41,243 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:41,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 15:31:41,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:41,449 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:41,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1522625704, now seen corresponding path program 1 times [2022-07-19 15:31:41,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:41,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552934436] [2022-07-19 15:31:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:41,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:31:41,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563127026] [2022-07-19 15:31:41,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:41,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:41,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:31:41,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 15:31:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:31:41,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-19 15:31:41,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 15:31:41,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:31:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 15:31:41,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:41,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552934436] [2022-07-19 15:31:41,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:31:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563127026] [2022-07-19 15:31:41,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563127026] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:31:41,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:31:41,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 14 [2022-07-19 15:31:41,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296922573] [2022-07-19 15:31:41,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:31:41,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:31:41,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:41,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:31:41,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:31:41,909 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-19 15:31:42,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:31:42,134 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2022-07-19 15:31:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 15:31:42,135 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 28 [2022-07-19 15:31:42,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:31:42,136 INFO L225 Difference]: With dead ends: 44 [2022-07-19 15:31:42,136 INFO L226 Difference]: Without dead ends: 38 [2022-07-19 15:31:42,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-07-19 15:31:42,137 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:31:42,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 71 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:31:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-19 15:31:42,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-07-19 15:31:42,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 15:31:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-07-19 15:31:42,142 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 28 [2022-07-19 15:31:42,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:31:42,143 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-07-19 15:31:42,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-19 15:31:42,143 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-07-19 15:31:42,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-19 15:31:42,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:42,144 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:42,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 15:31:42,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 15:31:42,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:42,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:42,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1035193378, now seen corresponding path program 1 times [2022-07-19 15:31:42,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:42,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748284760] [2022-07-19 15:31:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:42,372 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:31:42,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023642531] [2022-07-19 15:31:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:42,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:42,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:42,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:31:42,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 15:31:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:31:42,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-19 15:31:42,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:42,634 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 15:31:42,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:31:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 15:31:42,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:42,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748284760] [2022-07-19 15:31:42,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:31:42,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023642531] [2022-07-19 15:31:42,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023642531] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:31:42,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:31:42,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2022-07-19 15:31:42,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379513613] [2022-07-19 15:31:42,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:31:42,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 15:31:42,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:42,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 15:31:42,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-07-19 15:31:42,983 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 15:31:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:31:43,547 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2022-07-19 15:31:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-19 15:31:43,548 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2022-07-19 15:31:43,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:31:43,549 INFO L225 Difference]: With dead ends: 56 [2022-07-19 15:31:43,549 INFO L226 Difference]: Without dead ends: 48 [2022-07-19 15:31:43,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=207, Invalid=1053, Unknown=0, NotChecked=0, Total=1260 [2022-07-19 15:31:43,551 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:31:43,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 150 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 231 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-07-19 15:31:43,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-19 15:31:43,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2022-07-19 15:31:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 15:31:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2022-07-19 15:31:43,559 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 35 [2022-07-19 15:31:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:31:43,559 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2022-07-19 15:31:43,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 1.8333333333333333) internal successors, (33), 19 states have internal predecessors, (33), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-07-19 15:31:43,560 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2022-07-19 15:31:43,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 15:31:43,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:31:43,561 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:31:43,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 15:31:43,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:43,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:31:43,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:31:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash 546586445, now seen corresponding path program 1 times [2022-07-19 15:31:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:31:43,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861648030] [2022-07-19 15:31:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:43,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:31:43,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:31:43,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21505129] [2022-07-19 15:31:43,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:31:43,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:31:43,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:31:43,810 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) [2022-07-19 15:31:43,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 15:31:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:31:43,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 15:31:43,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:31:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 15:31:44,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:31:44,375 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 15:31:44,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:31:44,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861648030] [2022-07-19 15:31:44,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:31:44,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21505129] [2022-07-19 15:31:44,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21505129] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:31:44,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:31:44,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2022-07-19 15:31:44,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247759760] [2022-07-19 15:31:44,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:31:44,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:31:44,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:31:44,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:31:44,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:31:44,378 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-19 15:31:46,405 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:50,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:52,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:54,509 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:56,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:31:58,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-19 15:32:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:00,999 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-07-19 15:32:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:32:01,001 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2022-07-19 15:32:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:01,002 INFO L225 Difference]: With dead ends: 52 [2022-07-19 15:32:01,002 INFO L226 Difference]: Without dead ends: 46 [2022-07-19 15:32:01,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2022-07-19 15:32:01,003 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 18 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:01,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 102 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 12.1s Time] [2022-07-19 15:32:01,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-19 15:32:01,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2022-07-19 15:32:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.103448275862069) internal successors, (32), 30 states have internal predecessors, (32), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 15:32:01,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2022-07-19 15:32:01,017 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 44 [2022-07-19 15:32:01,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:01,019 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2022-07-19 15:32:01,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.8) internal successors, (28), 13 states have internal predecessors, (28), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-07-19 15:32:01,019 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2022-07-19 15:32:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 15:32:01,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:01,020 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:01,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:01,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:01,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:01,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:01,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1258851889, now seen corresponding path program 1 times [2022-07-19 15:32:01,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:01,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460201383] [2022-07-19 15:32:01,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:01,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:01,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:01,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [955803388] [2022-07-19 15:32:01,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:01,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:01,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:01,261 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:01,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 15:32:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:32:01,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:32:01,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 15:32:01,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:01,501 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 15:32:01,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:01,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460201383] [2022-07-19 15:32:01,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:01,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955803388] [2022-07-19 15:32:01,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955803388] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:01,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:01,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-19 15:32:01,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967866870] [2022-07-19 15:32:01,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:01,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 15:32:01,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:01,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 15:32:01,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:32:01,505 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-19 15:32:01,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:01,657 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2022-07-19 15:32:01,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:32:01,657 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 44 [2022-07-19 15:32:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:01,658 INFO L225 Difference]: With dead ends: 61 [2022-07-19 15:32:01,658 INFO L226 Difference]: Without dead ends: 55 [2022-07-19 15:32:01,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-07-19 15:32:01,659 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:01,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 136 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:32:01,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-19 15:32:01,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 47. [2022-07-19 15:32:01,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-19 15:32:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2022-07-19 15:32:01,666 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 44 [2022-07-19 15:32:01,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:01,667 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2022-07-19 15:32:01,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2022-07-19 15:32:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2022-07-19 15:32:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 15:32:01,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:01,668 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:01,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:01,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:01,884 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:01,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:01,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1465806458, now seen corresponding path program 2 times [2022-07-19 15:32:01,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:01,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089393981] [2022-07-19 15:32:01,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:01,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:01,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:01,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282918960] [2022-07-19 15:32:01,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 15:32:01,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:01,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:01,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:01,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 15:32:01,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 15:32:01,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:32:01,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:32:01,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 15:32:02,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 15:32:02,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:02,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089393981] [2022-07-19 15:32:02,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:02,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282918960] [2022-07-19 15:32:02,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282918960] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:02,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:02,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-19 15:32:02,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766541133] [2022-07-19 15:32:02,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:02,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 15:32:02,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:02,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 15:32:02,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-07-19 15:32:02,160 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-19 15:32:02,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:32:02,310 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2022-07-19 15:32:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:32:02,311 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 53 [2022-07-19 15:32:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:32:02,311 INFO L225 Difference]: With dead ends: 74 [2022-07-19 15:32:02,311 INFO L226 Difference]: Without dead ends: 68 [2022-07-19 15:32:02,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-19 15:32:02,312 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:32:02,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 110 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:32:02,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-07-19 15:32:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2022-07-19 15:32:02,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 39 states have internal predecessors, (45), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-19 15:32:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2022-07-19 15:32:02,320 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 53 [2022-07-19 15:32:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:32:02,321 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2022-07-19 15:32:02,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 10 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2022-07-19 15:32:02,321 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2022-07-19 15:32:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-19 15:32:02,322 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:32:02,322 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:32:02,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 15:32:02,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:02,538 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:32:02,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:32:02,539 INFO L85 PathProgramCache]: Analyzing trace with hash 614391490, now seen corresponding path program 3 times [2022-07-19 15:32:02,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:32:02,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597146765] [2022-07-19 15:32:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:32:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:32:02,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:32:02,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597639501] [2022-07-19 15:32:02,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 15:32:02,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:32:02,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:32:02,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:32:02,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 15:32:02,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 15:32:02,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:32:02,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 31 conjunts are in the unsatisfiable core [2022-07-19 15:32:02,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:32:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 15:32:12,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:32:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 15:32:51,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:32:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597146765] [2022-07-19 15:32:51,378 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:32:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597639501] [2022-07-19 15:32:51,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597639501] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:32:51,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:32:51,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 25 [2022-07-19 15:32:51,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731412896] [2022-07-19 15:32:51,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:32:51,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 15:32:51,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:32:51,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 15:32:51,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=496, Unknown=7, NotChecked=0, Total=600 [2022-07-19 15:32:51,379 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 15:33:10,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:10,360 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2022-07-19 15:33:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 15:33:10,360 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 53 [2022-07-19 15:33:10,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:10,360 INFO L225 Difference]: With dead ends: 62 [2022-07-19 15:33:10,360 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 15:33:10,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 47.5s TimeCoverageRelationStatistics Valid=253, Invalid=1144, Unknown=9, NotChecked=0, Total=1406 [2022-07-19 15:33:10,361 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:10,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 69 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 204 Invalid, 0 Unknown, 58 Unchecked, 3.6s Time] [2022-07-19 15:33:10,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 15:33:10,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 15:33:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:33:10,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 15:33:10,362 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2022-07-19 15:33:10,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:10,362 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 15:33:10,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 2.142857142857143) internal successors, (45), 22 states have internal predecessors, (45), 7 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 15:33:10,362 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 15:33:10,362 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 15:33:10,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:33:10,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-19 15:33:10,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:10,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 15:33:19,235 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 108 DAG size of output: 42 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-07-19 15:33:20,189 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~X~0#1|) (<= |ULTIMATE.start_main_~X~0#1| 10)) [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L902 garLoopResultBuilder]: At program point L52(lines 21 53) the Hoare annotation is: true [2022-07-19 15:33:20,190 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (or (and (= |ULTIMATE.start_main_~xy~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) (= .cse0 (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|)) (= |ULTIMATE.start_main_~x~0#1| 0) (= |ULTIMATE.start_main_~yx~0#1| 0)) (let ((.cse1 (* 2 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2))) (and (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ .cse1 (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse0)) (<= |ULTIMATE.start_main_~Y~0#1| 10) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ .cse2 .cse0)) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ .cse1 .cse2 .cse0)))))) [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point L50-1(line 50) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 45) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 45) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L895 garLoopResultBuilder]: At program point L32-2(lines 32 47) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~Y~0#1| 10) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2) (* 2 |ULTIMATE.start_main_~Y~0#1|))) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2)) (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) (<= |ULTIMATE.start_main_~X~0#1| 10)) [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point L32-3(lines 32 47) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~Y~0#1|))) (and (<= |ULTIMATE.start_main_~Y~0#1| 10) (= (+ (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1|) (+ (* (* |ULTIMATE.start_main_~Y~0#1| |ULTIMATE.start_main_~x~0#1|) 2) .cse0)) (= (+ |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~v~0#1| (* 2 |ULTIMATE.start_main_~xy~0#1|)) (+ (* 2 |ULTIMATE.start_main_~yx~0#1|) .cse0)) (<= 0 |ULTIMATE.start_main_~Y~0#1|) (<= 0 |ULTIMATE.start_main_~X~0#1|) (or (<= |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~X~0#1|) (forall ((|ULTIMATE.start_main_~Y~0#1| Int)) (= (+ (* 2 |ULTIMATE.start_main_~y~0#1|) (* (* |ULTIMATE.start_main_~X~0#1| |ULTIMATE.start_main_~y~0#1|) 2)) (* 2 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))))) (<= |ULTIMATE.start_main_~X~0#1| 10))) [2022-07-19 15:33:20,190 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 32 47) no Hoare annotation was computed. [2022-07-19 15:33:20,190 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 10 12) the Hoare annotation is: true [2022-07-19 15:33:20,191 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-07-19 15:33:20,191 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 12) no Hoare annotation was computed. [2022-07-19 15:33:20,191 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 10 12) no Hoare annotation was computed. [2022-07-19 15:33:20,191 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 16) no Hoare annotation was computed. [2022-07-19 15:33:20,191 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 13 19) the Hoare annotation is: true [2022-07-19 15:33:20,191 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 17) no Hoare annotation was computed. [2022-07-19 15:33:20,191 INFO L899 garLoopResultBuilder]: For program point L14-2(lines 13 19) no Hoare annotation was computed. [2022-07-19 15:33:20,191 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 13 19) no Hoare annotation was computed. [2022-07-19 15:33:20,191 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-07-19 15:33:20,193 INFO L356 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-07-19 15:33:20,194 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:33:20,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:33:20 BoogieIcfgContainer [2022-07-19 15:33:20,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:33:20,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:33:20,208 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:33:20,208 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:33:20,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:31:40" (3/4) ... [2022-07-19 15:33:20,210 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 15:33:20,217 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-19 15:33:20,217 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-19 15:33:20,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-19 15:33:20,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 15:33:20,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 15:33:20,221 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 15:33:20,248 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 15:33:20,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:33:20,248 INFO L158 Benchmark]: Toolchain (without parser) took 100275.96ms. Allocated memory was 90.2MB in the beginning and 132.1MB in the end (delta: 41.9MB). Free memory was 52.9MB in the beginning and 44.5MB in the end (delta: 8.4MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2022-07-19 15:33:20,249 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:33:20,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 248.38ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.7MB in the beginning and 86.2MB in the end (delta: -33.5MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-07-19 15:33:20,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.36ms. Allocated memory is still 109.1MB. Free memory was 86.2MB in the beginning and 84.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:33:20,249 INFO L158 Benchmark]: Boogie Preprocessor took 30.89ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 83.4MB in the end (delta: 882.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:33:20,250 INFO L158 Benchmark]: RCFGBuilder took 252.27ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 73.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 15:33:20,250 INFO L158 Benchmark]: TraceAbstraction took 99654.38ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 72.5MB in the beginning and 46.6MB in the end (delta: 25.9MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. [2022-07-19 15:33:20,250 INFO L158 Benchmark]: Witness Printer took 40.61ms. Allocated memory is still 132.1MB. Free memory was 46.6MB in the beginning and 44.5MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:33:20,252 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 248.38ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 52.7MB in the beginning and 86.2MB in the end (delta: -33.5MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.36ms. Allocated memory is still 109.1MB. Free memory was 86.2MB in the beginning and 84.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.89ms. Allocated memory is still 109.1MB. Free memory was 84.3MB in the beginning and 83.4MB in the end (delta: 882.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 252.27ms. Allocated memory is still 109.1MB. Free memory was 83.4MB in the beginning and 73.2MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 99654.38ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 72.5MB in the beginning and 46.6MB in the end (delta: 25.9MB). Peak memory consumption was 60.2MB. Max. memory is 16.1GB. * Witness Printer took 40.61ms. Allocated memory is still 132.1MB. Free memory was 46.6MB in the beginning and 44.5MB 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: 16]: 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 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 99.6s, OverallIterations: 8, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 36.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 9.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 16.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 739 SdHoareTripleChecker+Invalid, 16.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 114 IncrementalHoareTripleChecker+Unchecked, 576 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1218 IncrementalHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 163 mSDtfsCounter, 1218 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 431 SyntacticMatches, 6 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 53.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=7, InterpolantAutomatonStates: 105, 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, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 27 PreInvPairs, 51 NumberOfFragments, 211 HoareAnnotationTreeSize, 27 FomulaSimplifications, 504 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 5256 FormulaSimplificationTreeSizeReductionInter, 9.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 50.6s InterpolantComputationTime, 295 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 538 ConstructedInterpolants, 6 QuantifiedInterpolants, 3453 SizeOfPredicates, 44 NumberOfNonLiveVariables, 742 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 340/426 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: 32]: Loop Invariant Derived loop invariant: ((((Y <= 10 && X * y * 2 + X + v == Y * x * 2 + 2 * Y) && 0 <= Y) && 0 <= X) && (x <= X || (forall ULTIMATE.start_main_~Y~0#1 : int :: 2 * y + X * y * 2 == 2 * (x * y)))) && X <= 10 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-19 15:33:20,427 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