./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.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/cohencu-ll_valuebound5.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 ad40c7e9e7b0c80b1cec1e361a82d834fdd8270143479aa0f4bf8bc2b59c2aa5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 15:33:43,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 15:33:43,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 15:33:43,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 15:33:43,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 15:33:43,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 15:33:43,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 15:33:43,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 15:33:43,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 15:33:43,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 15:33:43,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 15:33:43,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 15:33:43,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 15:33:43,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 15:33:43,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 15:33:43,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 15:33:43,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 15:33:43,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 15:33:43,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 15:33:43,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 15:33:43,237 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 15:33:43,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 15:33:43,238 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 15:33:43,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 15:33:43,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 15:33:43,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 15:33:43,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 15:33:43,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 15:33:43,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 15:33:43,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 15:33:43,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 15:33:43,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 15:33:43,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 15:33:43,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 15:33:43,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 15:33:43,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 15:33:43,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 15:33:43,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 15:33:43,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 15:33:43,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 15:33:43,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 15:33:43,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 15:33:43,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 15:33:43,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 15:33:43,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 15:33:43,273 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 15:33:43,273 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 15:33:43,274 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 15:33:43,274 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 15:33:43,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 15:33:43,275 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 15:33:43,275 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 15:33:43,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 15:33:43,276 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 15:33:43,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 15:33:43,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 15:33:43,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 15:33:43,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 15:33:43,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 15:33:43,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 15:33:43,277 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 15:33:43,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 15:33:43,278 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 15:33:43,278 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 15:33:43,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 15:33:43,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 15:33:43,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 15:33:43,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:33:43,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 15:33:43,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 15:33:43,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 15:33:43,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 15:33:43,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 15:33:43,279 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 15:33:43,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 15:33:43,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 15:33:43,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad40c7e9e7b0c80b1cec1e361a82d834fdd8270143479aa0f4bf8bc2b59c2aa5 [2022-07-19 15:33:43,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 15:33:43,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 15:33:43,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 15:33:43,461 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 15:33:43,462 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 15:33:43,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2022-07-19 15:33:43,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f7d4112/1aeeaaca84b546779763c32d16f2cf3b/FLAGd121adfac [2022-07-19 15:33:43,799 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 15:33:43,800 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound5.c [2022-07-19 15:33:43,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f7d4112/1aeeaaca84b546779763c32d16f2cf3b/FLAGd121adfac [2022-07-19 15:33:44,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3f7d4112/1aeeaaca84b546779763c32d16f2cf3b [2022-07-19 15:33:44,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 15:33:44,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 15:33:44,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 15:33:44,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 15:33:44,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 15:33:44,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c14002d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44, skipping insertion in model container [2022-07-19 15:33:44,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 15:33:44,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 15:33:44,380 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/cohencu-ll_valuebound5.c[588,601] [2022-07-19 15:33:44,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:33:44,420 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 15:33:44,429 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/cohencu-ll_valuebound5.c[588,601] [2022-07-19 15:33:44,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 15:33:44,454 INFO L208 MainTranslator]: Completed translation [2022-07-19 15:33:44,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44 WrapperNode [2022-07-19 15:33:44,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 15:33:44,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 15:33:44,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 15:33:44,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 15:33:44,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,492 INFO L137 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-07-19 15:33:44,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 15:33:44,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 15:33:44,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 15:33:44,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 15:33:44,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,518 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 15:33:44,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 15:33:44,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 15:33:44,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 15:33:44,520 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (1/1) ... [2022-07-19 15:33:44,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 15:33:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:44,543 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 15:33:44,564 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 15:33:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 15:33:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 15:33:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 15:33:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 15:33:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 15:33:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 15:33:44,614 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 15:33:44,615 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 15:33:44,746 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 15:33:44,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 15:33:44,764 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 15:33:44,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:33:44 BoogieIcfgContainer [2022-07-19 15:33:44,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 15:33:44,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 15:33:44,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 15:33:44,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 15:33:44,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 03:33:44" (1/3) ... [2022-07-19 15:33:44,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fed1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:33:44, skipping insertion in model container [2022-07-19 15:33:44,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 03:33:44" (2/3) ... [2022-07-19 15:33:44,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fed1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 03:33:44, skipping insertion in model container [2022-07-19 15:33:44,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:33:44" (3/3) ... [2022-07-19 15:33:44,771 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound5.c [2022-07-19 15:33:44,780 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 15:33:44,780 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 15:33:44,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 15:33:44,819 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@3dc20a7e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25750a63 [2022-07-19 15:33:44,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 15:33:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-19 15:33:44,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 15:33:44,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:44,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:44,840 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:44,848 INFO L85 PathProgramCache]: Analyzing trace with hash -588951690, now seen corresponding path program 1 times [2022-07-19 15:33:44,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:44,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804320116] [2022-07-19 15:33:44,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:44,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:33:44,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:33:44,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:44,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804320116] [2022-07-19 15:33:44,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804320116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:33:44,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:33:44,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 15:33:44,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330777173] [2022-07-19 15:33:44,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:33:44,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 15:33:44,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 15:33:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:33:44,995 INFO L87 Difference]: Start difference. First operand has 27 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:33:45,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:45,014 INFO L93 Difference]: Finished difference Result 51 states and 89 transitions. [2022-07-19 15:33:45,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 15:33:45,016 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-19 15:33:45,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:45,025 INFO L225 Difference]: With dead ends: 51 [2022-07-19 15:33:45,025 INFO L226 Difference]: Without dead ends: 23 [2022-07-19 15:33:45,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 15:33:45,032 INFO L413 NwaCegarLoop]: 37 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, 37 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 15:33:45,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:33:45,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-19 15:33:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-19 15:33:45,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 15:33:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2022-07-19 15:33:45,066 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 9 [2022-07-19 15:33:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:45,066 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 33 transitions. [2022-07-19 15:33:45,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:33:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 33 transitions. [2022-07-19 15:33:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-19 15:33:45,068 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:45,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:45,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 15:33:45,069 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1187604804, now seen corresponding path program 1 times [2022-07-19 15:33:45,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:45,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186814623] [2022-07-19 15:33:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:45,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:33:45,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:33:45,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:45,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186814623] [2022-07-19 15:33:45,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186814623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:33:45,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:33:45,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:33:45,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14940715] [2022-07-19 15:33:45,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:33:45,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 15:33:45,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:45,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 15:33:45,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 15:33:45,200 INFO L87 Difference]: Start difference. First operand 23 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:33:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:45,267 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-07-19 15:33:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 15:33:45,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-19 15:33:45,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:45,269 INFO L225 Difference]: With dead ends: 29 [2022-07-19 15:33:45,269 INFO L226 Difference]: Without dead ends: 27 [2022-07-19 15:33:45,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:33:45,270 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:45,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 63 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:33:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-19 15:33:45,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-19 15:33:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-19 15:33:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-07-19 15:33:45,278 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 9 [2022-07-19 15:33:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:45,278 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-07-19 15:33:45,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 15:33:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-07-19 15:33:45,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-19 15:33:45,279 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:45,279 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:45,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 15:33:45,279 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1137950087, now seen corresponding path program 1 times [2022-07-19 15:33:45,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:45,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497497969] [2022-07-19 15:33:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:45,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:45,290 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:45,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762148131] [2022-07-19 15:33:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:45,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:45,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:45,292 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 15:33:45,293 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 15:33:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:33:45,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 15:33:45,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 15:33:45,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:33:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:45,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497497969] [2022-07-19 15:33:45,381 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:45,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762148131] [2022-07-19 15:33:45,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762148131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:33:45,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:33:45,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:33:45,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017145836] [2022-07-19 15:33:45,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:33:45,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 15:33:45,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:45,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 15:33:45,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 15:33:45,384 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 15:33:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:45,429 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2022-07-19 15:33:45,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 15:33:45,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-19 15:33:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:45,430 INFO L225 Difference]: With dead ends: 46 [2022-07-19 15:33:45,431 INFO L226 Difference]: Without dead ends: 44 [2022-07-19 15:33:45,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:33:45,432 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:45,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 116 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:33:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-07-19 15:33:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2022-07-19 15:33:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-19 15:33:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2022-07-19 15:33:45,440 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 14 [2022-07-19 15:33:45,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:45,440 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2022-07-19 15:33:45,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 15:33:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2022-07-19 15:33:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-19 15:33:45,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:45,441 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:45,469 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 15:33:45,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:45,661 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:45,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1500531996, now seen corresponding path program 1 times [2022-07-19 15:33:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:45,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682826423] [2022-07-19 15:33:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:45,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:45,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:45,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634412383] [2022-07-19 15:33:45,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:45,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:45,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:45,685 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 15:33:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:33:45,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 15:33:45,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:45,719 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 15:33:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 15:33:45,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:33:45,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:45,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682826423] [2022-07-19 15:33:45,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:45,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634412383] [2022-07-19 15:33:45,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634412383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:33:45,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:33:45,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:33:45,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598354201] [2022-07-19 15:33:45,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:33:45,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 15:33:45,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:45,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 15:33:45,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 15:33:45,778 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (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 15:33:45,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:45,835 INFO L93 Difference]: Finished difference Result 50 states and 68 transitions. [2022-07-19 15:33:45,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 15:33:45,836 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (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 15:33:45,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:45,837 INFO L225 Difference]: With dead ends: 50 [2022-07-19 15:33:45,838 INFO L226 Difference]: Without dead ends: 48 [2022-07-19 15:33:45,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:33:45,840 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:45,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 117 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:33:45,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-19 15:33:45,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2022-07-19 15:33:45,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-19 15:33:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 59 transitions. [2022-07-19 15:33:45,854 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 59 transitions. Word has length 19 [2022-07-19 15:33:45,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:45,855 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 59 transitions. [2022-07-19 15:33:45,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (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 15:33:45,855 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 59 transitions. [2022-07-19 15:33:45,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 15:33:45,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:45,856 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:45,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 15:33:46,067 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,SelfDestructingSolverStorable3 [2022-07-19 15:33:46,067 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:46,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1926539111, now seen corresponding path program 1 times [2022-07-19 15:33:46,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:46,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562162156] [2022-07-19 15:33:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:46,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:46,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:46,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843693391] [2022-07-19 15:33:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:46,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:46,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:46,084 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 15:33:46,084 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 15:33:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:33:46,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 15:33:46,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 15:33:46,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 15:33:46,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:46,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562162156] [2022-07-19 15:33:46,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:46,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843693391] [2022-07-19 15:33:46,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843693391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 15:33:46,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 15:33:46,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 15:33:46,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551787843] [2022-07-19 15:33:46,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 15:33:46,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 15:33:46,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:46,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 15:33:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 15:33:46,160 INFO L87 Difference]: Start difference. First operand 44 states and 59 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 15:33:46,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:46,222 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2022-07-19 15:33:46,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 15:33:46,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-07-19 15:33:46,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:46,225 INFO L225 Difference]: With dead ends: 58 [2022-07-19 15:33:46,225 INFO L226 Difference]: Without dead ends: 46 [2022-07-19 15:33:46,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 15:33:46,227 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:46,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 15:33:46,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-19 15:33:46,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-07-19 15:33:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-19 15:33:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2022-07-19 15:33:46,243 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2022-07-19 15:33:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:46,244 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2022-07-19 15:33:46,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 15:33:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2022-07-19 15:33:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-19 15:33:46,245 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:46,245 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:46,263 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 15:33:46,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:46,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:46,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:46,453 INFO L85 PathProgramCache]: Analyzing trace with hash -492592860, now seen corresponding path program 1 times [2022-07-19 15:33:46,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:46,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11764348] [2022-07-19 15:33:46,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:46,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:46,461 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:46,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896128311] [2022-07-19 15:33:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:46,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:46,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:46,468 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 15:33:46,469 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 15:33:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:33:46,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 15:33:46,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 15:33:46,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 15:33:46,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:46,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11764348] [2022-07-19 15:33:46,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:46,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896128311] [2022-07-19 15:33:46,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896128311] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:33:46,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:33:46,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-19 15:33:46,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703750347] [2022-07-19 15:33:46,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:46,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 15:33:46,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 15:33:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:33:46,679 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 15:33:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:46,949 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-07-19 15:33:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 15:33:46,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 41 [2022-07-19 15:33:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:46,951 INFO L225 Difference]: With dead ends: 69 [2022-07-19 15:33:46,951 INFO L226 Difference]: Without dead ends: 67 [2022-07-19 15:33:46,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-19 15:33:46,951 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:46,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 96 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 15:33:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-19 15:33:46,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2022-07-19 15:33:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 7 states have call predecessors, (16), 7 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-19 15:33:46,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-07-19 15:33:46,959 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 41 [2022-07-19 15:33:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:46,959 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-07-19 15:33:46,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 15:33:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-07-19 15:33:46,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-19 15:33:46,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:46,960 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:46,985 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 15:33:47,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:47,177 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:47,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:47,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1495173479, now seen corresponding path program 2 times [2022-07-19 15:33:47,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:47,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186884507] [2022-07-19 15:33:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:47,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:47,184 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:47,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072622515] [2022-07-19 15:33:47,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 15:33:47,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:47,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:47,186 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 15:33:47,187 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 15:33:47,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 15:33:47,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:33:47,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-19 15:33:47,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 15:33:47,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 15:33:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:47,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186884507] [2022-07-19 15:33:47,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:47,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072622515] [2022-07-19 15:33:47,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072622515] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:33:47,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:33:47,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-19 15:33:47,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919266242] [2022-07-19 15:33:47,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:47,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 15:33:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:47,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 15:33:47,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:33:47,340 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 15:33:47,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:47,455 INFO L93 Difference]: Finished difference Result 73 states and 92 transitions. [2022-07-19 15:33:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 15:33:47,456 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 46 [2022-07-19 15:33:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:47,456 INFO L225 Difference]: With dead ends: 73 [2022-07-19 15:33:47,457 INFO L226 Difference]: Without dead ends: 71 [2022-07-19 15:33:47,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-19 15:33:47,457 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:47,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 197 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:33:47,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-07-19 15:33:47,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2022-07-19 15:33:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 36 states have internal predecessors, (36), 19 states have call successors, (19), 8 states have call predecessors, (19), 8 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-19 15:33:47,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2022-07-19 15:33:47,471 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 46 [2022-07-19 15:33:47,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:47,472 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2022-07-19 15:33:47,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 15:33:47,472 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2022-07-19 15:33:47,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-07-19 15:33:47,473 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:47,473 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:47,492 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 15:33:47,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:47,683 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:47,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash 900098756, now seen corresponding path program 3 times [2022-07-19 15:33:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:47,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840214406] [2022-07-19 15:33:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:47,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:47,692 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:47,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [412574978] [2022-07-19 15:33:47,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 15:33:47,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:47,696 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 15:33:47,698 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 15:33:47,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 15:33:47,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:33:47,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-19 15:33:47,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:47,828 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-19 15:33:47,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-19 15:33:47,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:47,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840214406] [2022-07-19 15:33:47,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:47,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412574978] [2022-07-19 15:33:47,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412574978] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:33:47,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:33:47,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-07-19 15:33:47,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160296662] [2022-07-19 15:33:47,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:47,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 15:33:47,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:47,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 15:33:47,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 15:33:47,962 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 15:33:48,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:48,203 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2022-07-19 15:33:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 15:33:48,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 51 [2022-07-19 15:33:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:48,204 INFO L225 Difference]: With dead ends: 85 [2022-07-19 15:33:48,204 INFO L226 Difference]: Without dead ends: 77 [2022-07-19 15:33:48,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-19 15:33:48,205 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:48,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 95 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 15:33:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-07-19 15:33:48,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2022-07-19 15:33:48,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 45 states have internal predecessors, (45), 16 states have call successors, (16), 11 states have call predecessors, (16), 11 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-19 15:33:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2022-07-19 15:33:48,213 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 51 [2022-07-19 15:33:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:48,213 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2022-07-19 15:33:48,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 15:33:48,214 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2022-07-19 15:33:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 15:33:48,214 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:48,214 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:48,249 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 15:33:48,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:48,427 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:48,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1061977627, now seen corresponding path program 1 times [2022-07-19 15:33:48,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:48,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584324655] [2022-07-19 15:33:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:48,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:48,435 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:48,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49454010] [2022-07-19 15:33:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:48,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:48,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:48,437 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 15:33:48,438 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 15:33:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:33:48,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-19 15:33:48,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-07-19 15:33:48,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:48,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:48,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584324655] [2022-07-19 15:33:48,731 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:48,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49454010] [2022-07-19 15:33:48,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49454010] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 15:33:48,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:33:48,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-19 15:33:48,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025091402] [2022-07-19 15:33:48,732 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:48,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 15:33:48,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:48,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 15:33:48,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-19 15:33:48,733 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 15:33:48,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:48,841 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2022-07-19 15:33:48,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 15:33:48,842 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 67 [2022-07-19 15:33:48,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:48,842 INFO L225 Difference]: With dead ends: 87 [2022-07-19 15:33:48,842 INFO L226 Difference]: Without dead ends: 85 [2022-07-19 15:33:48,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:33:48,843 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:48,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 116 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:33:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-07-19 15:33:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2022-07-19 15:33:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 50 states have (on average 1.06) internal successors, (53), 52 states have internal predecessors, (53), 20 states have call successors, (20), 13 states have call predecessors, (20), 13 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-19 15:33:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2022-07-19 15:33:48,852 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 67 [2022-07-19 15:33:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:48,852 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2022-07-19 15:33:48,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 15:33:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2022-07-19 15:33:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 15:33:48,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:48,853 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:48,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 15:33:49,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:49,067 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1246911088, now seen corresponding path program 1 times [2022-07-19 15:33:49,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:49,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329537832] [2022-07-19 15:33:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:49,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:49,075 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:49,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964300928] [2022-07-19 15:33:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:49,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:49,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:49,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:33:49,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 15:33:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 15:33:49,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 15:33:49,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2022-07-19 15:33:49,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:49,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:49,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329537832] [2022-07-19 15:33:49,446 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:49,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964300928] [2022-07-19 15:33:49,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964300928] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 15:33:49,446 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:33:49,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-07-19 15:33:49,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944051055] [2022-07-19 15:33:49,447 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:49,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 15:33:49,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:49,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 15:33:49,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-19 15:33:49,448 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 15:33:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:49,551 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2022-07-19 15:33:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 15:33:49,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 72 [2022-07-19 15:33:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:49,553 INFO L225 Difference]: With dead ends: 91 [2022-07-19 15:33:49,553 INFO L226 Difference]: Without dead ends: 78 [2022-07-19 15:33:49,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:33:49,554 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:49,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 146 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:33:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-19 15:33:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-19 15:33:49,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-07-19 15:33:49,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2022-07-19 15:33:49,561 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 72 [2022-07-19 15:33:49,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:49,562 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2022-07-19 15:33:49,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 15:33:49,562 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2022-07-19 15:33:49,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 15:33:49,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:49,563 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:49,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 15:33:49,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-19 15:33:49,780 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:49,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:49,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1961933060, now seen corresponding path program 4 times [2022-07-19 15:33:49,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:49,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410217367] [2022-07-19 15:33:49,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:49,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:49,788 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:49,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218195063] [2022-07-19 15:33:49,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 15:33:49,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:49,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:49,789 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:33:49,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 15:33:49,825 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 15:33:49,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:33:49,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-19 15:33:49,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 70 proven. 29 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-19 15:33:50,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 81 proven. 15 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-07-19 15:33:50,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:50,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410217367] [2022-07-19 15:33:50,283 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:50,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218195063] [2022-07-19 15:33:50,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218195063] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:33:50,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:33:50,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-07-19 15:33:50,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36873402] [2022-07-19 15:33:50,284 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:50,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 15:33:50,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:50,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 15:33:50,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-19 15:33:50,285 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-19 15:33:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:50,759 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2022-07-19 15:33:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 15:33:50,760 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) Word has length 73 [2022-07-19 15:33:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:50,761 INFO L225 Difference]: With dead ends: 109 [2022-07-19 15:33:50,761 INFO L226 Difference]: Without dead ends: 107 [2022-07-19 15:33:50,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-07-19 15:33:50,762 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 27 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:50,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 81 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 15:33:50,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-07-19 15:33:50,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 97. [2022-07-19 15:33:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 62 states have internal predecessors, (62), 20 states have call successors, (20), 16 states have call predecessors, (20), 16 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-19 15:33:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2022-07-19 15:33:50,770 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 73 [2022-07-19 15:33:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:50,770 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2022-07-19 15:33:50,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 8 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 8 states have call predecessors, (23), 6 states have call successors, (23) [2022-07-19 15:33:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2022-07-19 15:33:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 15:33:50,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:50,772 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:50,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 15:33:50,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:50,989 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:50,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:50,989 INFO L85 PathProgramCache]: Analyzing trace with hash 671163038, now seen corresponding path program 2 times [2022-07-19 15:33:50,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:50,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122250727] [2022-07-19 15:33:50,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:50,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:50,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:50,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733057650] [2022-07-19 15:33:50,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 15:33:50,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:50,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:50,998 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:33:50,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 15:33:51,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 15:33:51,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:33:51,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-19 15:33:51,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 480 trivial. 0 not checked. [2022-07-19 15:33:51,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:51,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122250727] [2022-07-19 15:33:51,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:51,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733057650] [2022-07-19 15:33:51,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733057650] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 15:33:51,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:33:51,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-19 15:33:51,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345520858] [2022-07-19 15:33:51,338 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:51,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 15:33:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 15:33:51,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-19 15:33:51,339 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 15:33:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:51,492 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2022-07-19 15:33:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 15:33:51,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 94 [2022-07-19 15:33:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:51,493 INFO L225 Difference]: With dead ends: 122 [2022-07-19 15:33:51,493 INFO L226 Difference]: Without dead ends: 120 [2022-07-19 15:33:51,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-19 15:33:51,493 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:51,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 135 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:33:51,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-07-19 15:33:51,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2022-07-19 15:33:51,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 75 states have internal predecessors, (76), 25 states have call successors, (25), 20 states have call predecessors, (25), 20 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-19 15:33:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 125 transitions. [2022-07-19 15:33:51,503 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 125 transitions. Word has length 94 [2022-07-19 15:33:51,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:51,503 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 125 transitions. [2022-07-19 15:33:51,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 15:33:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 125 transitions. [2022-07-19 15:33:51,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 15:33:51,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:51,504 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:51,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 15:33:51,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 15:33:51,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:51,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:51,716 INFO L85 PathProgramCache]: Analyzing trace with hash -674604307, now seen corresponding path program 2 times [2022-07-19 15:33:51,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:51,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540772489] [2022-07-19 15:33:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:51,722 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:51,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023174167] [2022-07-19 15:33:51,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 15:33:51,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:51,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:51,728 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:33:51,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 15:33:51,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 15:33:51,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:33:51,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-19 15:33:51,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2022-07-19 15:33:51,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:52,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540772489] [2022-07-19 15:33:52,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:52,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023174167] [2022-07-19 15:33:52,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023174167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 15:33:52,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:33:52,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-07-19 15:33:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168919025] [2022-07-19 15:33:52,041 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:52,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 15:33:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 15:33:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-19 15:33:52,041 INFO L87 Difference]: Start difference. First operand 119 states and 125 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 15:33:52,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:52,200 INFO L93 Difference]: Finished difference Result 130 states and 134 transitions. [2022-07-19 15:33:52,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 15:33:52,201 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 99 [2022-07-19 15:33:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:52,202 INFO L225 Difference]: With dead ends: 130 [2022-07-19 15:33:52,202 INFO L226 Difference]: Without dead ends: 117 [2022-07-19 15:33:52,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-19 15:33:52,202 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:52,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 144 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:33:52,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-19 15:33:52,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-19 15:33:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 23 states have call successors, (23), 20 states have call predecessors, (23), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-19 15:33:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 120 transitions. [2022-07-19 15:33:52,211 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 120 transitions. Word has length 99 [2022-07-19 15:33:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:52,212 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 120 transitions. [2022-07-19 15:33:52,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-19 15:33:52,212 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 120 transitions. [2022-07-19 15:33:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-19 15:33:52,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:52,213 INFO L195 NwaCegarLoop]: trace histogram [22, 21, 21, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:52,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 15:33:52,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 15:33:52,422 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1837317061, now seen corresponding path program 3 times [2022-07-19 15:33:52,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:52,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400311132] [2022-07-19 15:33:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:52,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:52,432 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:52,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651875937] [2022-07-19 15:33:52,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 15:33:52,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:52,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:52,433 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:33:52,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 15:33:52,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 15:33:52,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:33:52,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 15:33:52,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 801 trivial. 0 not checked. [2022-07-19 15:33:52,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:53,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:53,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400311132] [2022-07-19 15:33:53,043 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:53,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651875937] [2022-07-19 15:33:53,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651875937] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 15:33:53,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-19 15:33:53,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-07-19 15:33:53,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292824480] [2022-07-19 15:33:53,043 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:53,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 15:33:53,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:53,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 15:33:53,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-19 15:33:53,044 INFO L87 Difference]: Start difference. First operand 117 states and 120 transitions. Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 15:33:53,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:53,227 INFO L93 Difference]: Finished difference Result 123 states and 125 transitions. [2022-07-19 15:33:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 15:33:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 121 [2022-07-19 15:33:53,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:53,228 INFO L225 Difference]: With dead ends: 123 [2022-07-19 15:33:53,228 INFO L226 Difference]: Without dead ends: 119 [2022-07-19 15:33:53,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-19 15:33:53,228 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:53,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 15:33:53,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-19 15:33:53,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-07-19 15:33:53,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 75 states have (on average 1.0133333333333334) internal successors, (76), 75 states have internal predecessors, (76), 23 states have call successors, (23), 21 states have call predecessors, (23), 20 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-07-19 15:33:53,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2022-07-19 15:33:53,239 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 121 [2022-07-19 15:33:53,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:53,239 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2022-07-19 15:33:53,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 9 states have internal predecessors, (18), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-19 15:33:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2022-07-19 15:33:53,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 15:33:53,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 15:33:53,241 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 15:33:53,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 15:33:53,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 15:33:53,454 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 15:33:53,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 15:33:53,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1974193296, now seen corresponding path program 3 times [2022-07-19 15:33:53,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 15:33:53,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879156518] [2022-07-19 15:33:53,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 15:33:53,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 15:33:53,461 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 15:33:53,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132674592] [2022-07-19 15:33:53,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 15:33:53,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 15:33:53,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 15:33:53,464 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 15:33:53,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 15:33:53,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-19 15:33:53,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 15:33:53,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-19 15:33:53,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 15:33:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 181 proven. 69 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2022-07-19 15:33:55,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 15:33:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1010 backedges. 148 proven. 39 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked. [2022-07-19 15:33:58,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 15:33:58,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879156518] [2022-07-19 15:33:58,033 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 15:33:58,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132674592] [2022-07-19 15:33:58,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132674592] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 15:33:58,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 15:33:58,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 17 [2022-07-19 15:33:58,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916614379] [2022-07-19 15:33:58,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 15:33:58,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 15:33:58,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 15:33:58,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 15:33:58,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-07-19 15:33:58,035 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-19 15:33:58,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 15:33:58,952 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2022-07-19 15:33:58,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 15:33:58,953 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) Word has length 126 [2022-07-19 15:33:58,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 15:33:58,953 INFO L225 Difference]: With dead ends: 119 [2022-07-19 15:33:58,953 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 15:33:58,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 233 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-07-19 15:33:58,954 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 15:33:58,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 41 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 15:33:58,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 15:33:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 15:33:58,954 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 15:33:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 15:33:58,955 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 126 [2022-07-19 15:33:58,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 15:33:58,955 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 15:33:58,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 9 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 8 states have call predecessors, (31), 9 states have call successors, (31) [2022-07-19 15:33:58,955 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 15:33:58,955 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 15:33:58,957 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 15:33:58,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 15:33:59,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 15:33:59,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 15:34:03,009 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 15:34:03,009 INFO L895 garLoopResultBuilder]: At program point L33-2(lines 33 46) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-19 15:34:03,010 INFO L895 garLoopResultBuilder]: At program point L33-3(lines 33 46) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (< |ULTIMATE.start_main_~a~0#1| (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6))) .cse0 (<= |ULTIMATE.start_main_~a~0#1| 5) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 (< |ULTIMATE.start_main_~a~0#1| 2) (= |ULTIMATE.start_main_~z~0#1| 18)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse2 (< |ULTIMATE.start_main_~a~0#1| 1) .cse4) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-07-19 15:34:03,010 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-07-19 15:34:03,010 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-07-19 15:34:03,010 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (< |ULTIMATE.start_main_~a~0#1| (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6))) .cse0 (<= |ULTIMATE.start_main_~a~0#1| 5) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 (< |ULTIMATE.start_main_~a~0#1| 2) (= |ULTIMATE.start_main_~z~0#1| 18)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| 1) .cse2 (< |ULTIMATE.start_main_~a~0#1| 1) .cse4) (and (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)))) [2022-07-19 15:34:03,010 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-07-19 15:34:03,010 INFO L899 garLoopResultBuilder]: For program point L38(lines 33 46) no Hoare annotation was computed. [2022-07-19 15:34:03,010 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-19 15:34:03,010 INFO L895 garLoopResultBuilder]: At program point L34(line 34) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|) |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-19 15:34:03,010 INFO L895 garLoopResultBuilder]: At program point L34-1(line 34) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-19 15:34:03,010 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 15:34:03,011 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 15:34:03,011 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 15:34:03,011 INFO L902 garLoopResultBuilder]: At program point L55(lines 22 56) the Hoare annotation is: true [2022-07-19 15:34:03,011 INFO L899 garLoopResultBuilder]: For program point L53(line 53) no Hoare annotation was computed. [2022-07-19 15:34:03,011 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (and (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) [2022-07-19 15:34:03,011 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse3 (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1))) (.cse0 (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1))) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24)))) (.cse2 (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|)))) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (< |ULTIMATE.start_main_~a~0#1| (div (+ (* (- 1) |ULTIMATE.start_main_~z~0#1|) 6) (- 6))) .cse0 (<= |ULTIMATE.start_main_~a~0#1| 5) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 (not (<= 2 |ULTIMATE.start_main_~a~0#1|)) (= |ULTIMATE.start_main_~z~0#1| 18)) (and .cse2 (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 0) (= 6 |ULTIMATE.start_main_~z~0#1|)) (and .cse0 .cse1 .cse2 (< |ULTIMATE.start_main_~a~0#1| 1) .cse4 (<= 12 |ULTIMATE.start_main_~z~0#1|) (<= |ULTIMATE.start_main_~n~0#1| 1)))) [2022-07-19 15:34:03,011 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-19 15:34:03,011 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-19 15:34:03,011 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~y~0#1| (+ (* 3 |ULTIMATE.start_main_~n~0#1|) (* 3 (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 1)) (<= |ULTIMATE.start_main_~a~0#1| 5) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) 6 (* |ULTIMATE.start_main_~z~0#1| |ULTIMATE.start_main_~z~0#1|)) (+ (* |ULTIMATE.start_main_~z~0#1| 4) (* |ULTIMATE.start_main_~x~0#1| 18) (* |ULTIMATE.start_main_~y~0#1| 24))) (= |ULTIMATE.start_main_~z~0#1| (+ 6 (* 6 |ULTIMATE.start_main_~n~0#1|))) (<= |ULTIMATE.start_main_~n~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-07-19 15:34:03,012 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-19 15:34:03,012 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-19 15:34:03,012 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-19 15:34:03,012 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-19 15:34:03,012 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-19 15:34:03,012 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-19 15:34:03,014 INFO L356 BasicCegarLoop]: Path program histogram: [4, 3, 3, 1, 1, 1, 1, 1] [2022-07-19 15:34:03,015 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 15:34:03,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 03:34:03 BoogieIcfgContainer [2022-07-19 15:34:03,024 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 15:34:03,024 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 15:34:03,024 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 15:34:03,024 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 15:34:03,025 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 03:33:44" (3/4) ... [2022-07-19 15:34:03,026 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 15:34:03,032 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-19 15:34:03,035 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-19 15:34:03,035 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 15:34:03,035 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 15:34:03,035 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 15:34:03,063 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 15:34:03,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 15:34:03,063 INFO L158 Benchmark]: Toolchain (without parser) took 18825.19ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 79.0MB in the beginning and 57.2MB in the end (delta: 21.8MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2022-07-19 15:34:03,064 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 86.1MB in the beginning and 86.0MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 15:34:03,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.94ms. Allocated memory is still 115.3MB. Free memory was 78.7MB in the beginning and 88.6MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 15:34:03,064 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.26ms. Allocated memory is still 115.3MB. Free memory was 88.6MB in the beginning and 86.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:34:03,065 INFO L158 Benchmark]: Boogie Preprocessor took 24.98ms. Allocated memory is still 115.3MB. Free memory was 86.7MB in the beginning and 85.9MB in the end (delta: 797.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:34:03,065 INFO L158 Benchmark]: RCFGBuilder took 246.51ms. Allocated memory is still 115.3MB. Free memory was 85.9MB in the beginning and 75.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 15:34:03,065 INFO L158 Benchmark]: TraceAbstraction took 18256.99ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 74.7MB in the beginning and 60.3MB in the end (delta: 14.4MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. [2022-07-19 15:34:03,065 INFO L158 Benchmark]: Witness Printer took 38.87ms. Allocated memory is still 138.4MB. Free memory was 60.3MB in the beginning and 57.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 15:34:03,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 86.1MB in the beginning and 86.0MB in the end (delta: 27.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.94ms. Allocated memory is still 115.3MB. Free memory was 78.7MB in the beginning and 88.6MB in the end (delta: -9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.26ms. Allocated memory is still 115.3MB. Free memory was 88.6MB in the beginning and 86.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.98ms. Allocated memory is still 115.3MB. Free memory was 86.7MB in the beginning and 85.9MB in the end (delta: 797.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 246.51ms. Allocated memory is still 115.3MB. Free memory was 85.9MB in the beginning and 75.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 18256.99ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 74.7MB in the beginning and 60.3MB in the end (delta: 14.4MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. * Witness Printer took 38.87ms. Allocated memory is still 138.4MB. Free memory was 60.3MB in the beginning and 57.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.2s, OverallIterations: 15, TraceHistogramMax: 23, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 147 mSDsluCounter, 1530 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1013 mSDsCounter, 321 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2085 IncrementalHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 321 mSolverCounterUnsat, 517 mSDtfsCounter, 2085 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1373 GetRequests, 1225 SyntacticMatches, 13 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=12, InterpolantAutomatonStates: 106, 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, 15 MinimizatonAttempts, 54 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 65 PreInvPairs, 111 NumberOfFragments, 941 HoareAnnotationTreeSize, 65 FomulaSimplifications, 12145 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 14 FomulaSimplificationsInter, 16431 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 865 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1182 ConstructedInterpolants, 0 QuantifiedInterpolants, 5603 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1687 ConjunctsInSsa, 239 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 5626/5874 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: 33]: Loop Invariant Derived loop invariant: (((((cond == 1 && n * n * n == x) && y == 3 * n + 3 * (n * n) + 1) && a <= 5) && z == 6 + 6 * n) && n <= a + 1) && 0 <= a - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-19 15:34:03,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE