./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array21_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/array-patterns/array21_pattern.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 f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 00:39:42,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 00:39:42,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 00:39:42,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 00:39:42,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 00:39:42,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 00:39:42,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 00:39:42,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 00:39:42,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 00:39:42,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 00:39:42,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 00:39:42,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 00:39:42,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 00:39:42,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 00:39:42,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 00:39:42,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 00:39:42,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 00:39:42,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 00:39:42,272 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 00:39:42,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 00:39:42,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 00:39:42,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 00:39:42,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 00:39:42,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 00:39:42,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 00:39:42,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 00:39:42,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 00:39:42,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 00:39:42,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 00:39:42,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 00:39:42,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 00:39:42,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 00:39:42,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 00:39:42,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 00:39:42,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 00:39:42,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 00:39:42,287 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 00:39:42,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 00:39:42,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 00:39:42,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 00:39:42,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 00:39:42,290 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 00:39:42,308 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 00:39:42,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 00:39:42,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 00:39:42,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 00:39:42,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 00:39:42,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 00:39:42,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 00:39:42,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 00:39:42,310 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 00:39:42,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 00:39:42,311 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 00:39:42,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 00:39:42,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 00:39:42,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 00:39:42,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 00:39:42,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 00:39:42,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 00:39:42,312 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 00:39:42,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 00:39:42,312 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 00:39:42,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 00:39:42,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 00:39:42,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 00:39:42,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 00:39:42,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 00:39:42,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 00:39:42,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 00:39:42,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 00:39:42,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 00:39:42,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 00:39:42,314 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 00:39:42,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 00:39:42,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 00:39:42,315 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 00:39:42,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1a738dced8b73ebc8edf3e480fddcd32bb19127a8255980e93fab5e96705ab3 [2021-12-17 00:39:42,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 00:39:42,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 00:39:42,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 00:39:42,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 00:39:42,542 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 00:39:42,543 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array21_pattern.c [2021-12-17 00:39:42,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227a4ae05/61e56917ad1f49e7a45ec1e52316baea/FLAGdf8196d63 [2021-12-17 00:39:43,032 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 00:39:43,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array21_pattern.c [2021-12-17 00:39:43,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227a4ae05/61e56917ad1f49e7a45ec1e52316baea/FLAGdf8196d63 [2021-12-17 00:39:43,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227a4ae05/61e56917ad1f49e7a45ec1e52316baea [2021-12-17 00:39:43,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 00:39:43,068 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 00:39:43,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 00:39:43,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 00:39:43,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 00:39:43,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf04c8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43, skipping insertion in model container [2021-12-17 00:39:43,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 00:39:43,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 00:39:43,228 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/array-patterns/array21_pattern.c[1340,1353] [2021-12-17 00:39:43,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 00:39:43,256 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 00:39:43,264 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/array-patterns/array21_pattern.c[1340,1353] [2021-12-17 00:39:43,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 00:39:43,281 INFO L208 MainTranslator]: Completed translation [2021-12-17 00:39:43,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43 WrapperNode [2021-12-17 00:39:43,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 00:39:43,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 00:39:43,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 00:39:43,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 00:39:43,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,317 INFO L137 Inliner]: procedures = 17, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 105 [2021-12-17 00:39:43,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 00:39:43,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 00:39:43,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 00:39:43,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 00:39:43,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,345 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 00:39:43,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 00:39:43,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 00:39:43,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 00:39:43,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (1/1) ... [2021-12-17 00:39:43,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 00:39:43,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:43,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 00:39:43,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 00:39:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-12-17 00:39:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-12-17 00:39:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 00:39:43,416 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 00:39:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 00:39:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 00:39:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 00:39:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 00:39:43,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 00:39:43,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 00:39:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 00:39:43,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 00:39:43,491 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 00:39:43,493 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 00:39:43,665 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 00:39:43,670 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 00:39:43,670 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-17 00:39:43,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:39:43 BoogieIcfgContainer [2021-12-17 00:39:43,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 00:39:43,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 00:39:43,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 00:39:43,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 00:39:43,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 12:39:43" (1/3) ... [2021-12-17 00:39:43,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6489350a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:39:43, skipping insertion in model container [2021-12-17 00:39:43,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:39:43" (2/3) ... [2021-12-17 00:39:43,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6489350a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:39:43, skipping insertion in model container [2021-12-17 00:39:43,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:39:43" (3/3) ... [2021-12-17 00:39:43,682 INFO L111 eAbstractionObserver]: Analyzing ICFG array21_pattern.c [2021-12-17 00:39:43,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 00:39:43,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 00:39:43,719 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 00:39:43,725 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 00:39:43,725 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 00:39:43,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:39:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-17 00:39:43,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:43,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:43,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:43,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:43,751 INFO L85 PathProgramCache]: Analyzing trace with hash 2136211159, now seen corresponding path program 1 times [2021-12-17 00:39:43,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:43,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552267085] [2021-12-17 00:39:43,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:43,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:39:43,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 00:39:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:39:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:39:43,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:43,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552267085] [2021-12-17 00:39:43,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552267085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:39:43,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:39:43,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 00:39:43,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532678291] [2021-12-17 00:39:43,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:39:43,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 00:39:43,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:43,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 00:39:43,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 00:39:43,935 INFO L87 Difference]: Start difference. First operand has 40 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 32 states have internal predecessors, (48), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 00:39:43,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:43,954 INFO L93 Difference]: Finished difference Result 77 states and 115 transitions. [2021-12-17 00:39:43,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 00:39:43,955 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-17 00:39:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:43,962 INFO L225 Difference]: With dead ends: 77 [2021-12-17 00:39:43,962 INFO L226 Difference]: Without dead ends: 36 [2021-12-17 00:39:43,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 00:39:43,967 INFO L933 BasicCegarLoop]: 50 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, 50 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 [2021-12-17 00:39:43,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:39:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-17 00:39:43,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-17 00:39:43,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:39:43,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2021-12-17 00:39:43,996 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 15 [2021-12-17 00:39:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:43,996 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-12-17 00:39:43,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 00:39:43,996 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2021-12-17 00:39:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-17 00:39:43,998 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:43,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:43,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 00:39:43,999 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash -699940082, now seen corresponding path program 1 times [2021-12-17 00:39:44,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:44,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432026854] [2021-12-17 00:39:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:44,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:44,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:44,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2069494790] [2021-12-17 00:39:44,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:44,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:44,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:44,017 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:44,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 00:39:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:39:44,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 00:39:44,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:39:44,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:39:44,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:44,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432026854] [2021-12-17 00:39:44,274 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:44,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069494790] [2021-12-17 00:39:44,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069494790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:39:44,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:39:44,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 00:39:44,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896363028] [2021-12-17 00:39:44,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:39:44,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 00:39:44,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:44,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 00:39:44,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-17 00:39:44,281 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:39:44,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:44,423 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2021-12-17 00:39:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 00:39:44,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2021-12-17 00:39:44,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:44,425 INFO L225 Difference]: With dead ends: 76 [2021-12-17 00:39:44,426 INFO L226 Difference]: Without dead ends: 48 [2021-12-17 00:39:44,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-17 00:39:44,428 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 49 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:44,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 92 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:39:44,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-17 00:39:44,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2021-12-17 00:39:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:39:44,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2021-12-17 00:39:44,437 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 35 [2021-12-17 00:39:44,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:44,438 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2021-12-17 00:39:44,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:39:44,438 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2021-12-17 00:39:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-17 00:39:44,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:44,440 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:44,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:44,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:44,655 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:44,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1308831759, now seen corresponding path program 1 times [2021-12-17 00:39:44,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:44,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704532902] [2021-12-17 00:39:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:44,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:44,667 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:44,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706671126] [2021-12-17 00:39:44,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:44,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:44,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:44,670 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:44,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 00:39:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:39:44,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 00:39:44,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 00:39:44,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:39:44,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:44,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704532902] [2021-12-17 00:39:44,808 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:44,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706671126] [2021-12-17 00:39:44,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706671126] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:39:44,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:39:44,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 00:39:44,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174666425] [2021-12-17 00:39:44,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:39:44,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 00:39:44,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:44,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 00:39:44,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 00:39:44,810 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:39:44,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:44,851 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2021-12-17 00:39:44,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 00:39:44,851 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2021-12-17 00:39:44,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:44,852 INFO L225 Difference]: With dead ends: 79 [2021-12-17 00:39:44,852 INFO L226 Difference]: Without dead ends: 46 [2021-12-17 00:39:44,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 00:39:44,854 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 27 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:44,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 76 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:39:44,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-17 00:39:44,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-12-17 00:39:44,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:39:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2021-12-17 00:39:44,862 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 41 [2021-12-17 00:39:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:44,862 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2021-12-17 00:39:44,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 00:39:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2021-12-17 00:39:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-17 00:39:44,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:44,864 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:44,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:45,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-17 00:39:45,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:45,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1300942485, now seen corresponding path program 1 times [2021-12-17 00:39:45,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:45,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245994131] [2021-12-17 00:39:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:45,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:45,092 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:45,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [715323306] [2021-12-17 00:39:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:45,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:45,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:45,094 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:45,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 00:39:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:39:45,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 00:39:45,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 00:39:45,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:39:45,446 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-17 00:39:45,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:45,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245994131] [2021-12-17 00:39:45,447 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:45,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715323306] [2021-12-17 00:39:45,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715323306] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:39:45,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:39:45,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-17 00:39:45,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427404321] [2021-12-17 00:39:45,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:39:45,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 00:39:45,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:45,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 00:39:45,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-12-17 00:39:45,452 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-17 00:39:45,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:45,646 INFO L93 Difference]: Finished difference Result 85 states and 105 transitions. [2021-12-17 00:39:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 00:39:45,647 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 45 [2021-12-17 00:39:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:45,648 INFO L225 Difference]: With dead ends: 85 [2021-12-17 00:39:45,648 INFO L226 Difference]: Without dead ends: 50 [2021-12-17 00:39:45,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-12-17 00:39:45,649 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 104 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:45,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 151 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:39:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-17 00:39:45,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2021-12-17 00:39:45,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 39 states have (on average 1.205128205128205) internal successors, (47), 39 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:39:45,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2021-12-17 00:39:45,656 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 45 [2021-12-17 00:39:45,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:45,656 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2021-12-17 00:39:45,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-17 00:39:45,657 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2021-12-17 00:39:45,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-17 00:39:45,658 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:45,658 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:45,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:45,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:45,876 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:45,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:45,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1544610617, now seen corresponding path program 2 times [2021-12-17 00:39:45,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:45,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302153073] [2021-12-17 00:39:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:45,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:45,891 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:45,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518220352] [2021-12-17 00:39:45,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 00:39:45,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:45,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:45,903 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) [2021-12-17 00:39:45,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 00:39:45,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 00:39:45,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:39:45,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 00:39:45,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:46,091 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-17 00:39:46,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:39:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-17 00:39:46,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:46,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302153073] [2021-12-17 00:39:46,205 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:46,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518220352] [2021-12-17 00:39:46,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518220352] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:39:46,205 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:39:46,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-17 00:39:46,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937509780] [2021-12-17 00:39:46,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:39:46,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 00:39:46,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:46,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 00:39:46,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-17 00:39:46,208 INFO L87 Difference]: Start difference. First operand 48 states and 57 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:39:46,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:46,378 INFO L93 Difference]: Finished difference Result 106 states and 128 transitions. [2021-12-17 00:39:46,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 00:39:46,379 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2021-12-17 00:39:46,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:46,380 INFO L225 Difference]: With dead ends: 106 [2021-12-17 00:39:46,380 INFO L226 Difference]: Without dead ends: 74 [2021-12-17 00:39:46,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-12-17 00:39:46,381 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:46,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 198 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:39:46,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-17 00:39:46,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2021-12-17 00:39:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:39:46,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2021-12-17 00:39:46,389 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 49 [2021-12-17 00:39:46,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:46,389 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2021-12-17 00:39:46,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:39:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2021-12-17 00:39:46,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 00:39:46,391 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:46,391 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:46,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:46,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:46,599 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:46,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash -725408594, now seen corresponding path program 3 times [2021-12-17 00:39:46,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:46,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408930132] [2021-12-17 00:39:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:46,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:46,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:46,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891326691] [2021-12-17 00:39:46,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 00:39:46,616 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:46,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:46,618 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) [2021-12-17 00:39:46,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 00:39:49,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-12-17 00:39:49,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:39:49,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-17 00:39:49,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:49,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-17 00:39:49,594 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:49,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-17 00:39:49,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 64 [2021-12-17 00:39:49,732 INFO L354 Elim1Store]: treesize reduction 116, result has 18.9 percent of original size [2021-12-17 00:39:49,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 83 [2021-12-17 00:39:49,748 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:49,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:49,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 22 [2021-12-17 00:39:49,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 67 [2021-12-17 00:39:49,990 INFO L354 Elim1Store]: treesize reduction 174, result has 12.6 percent of original size [2021-12-17 00:39:49,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 66 treesize of output 88 [2021-12-17 00:39:50,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:50,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:50,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:50,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 14 [2021-12-17 00:39:50,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 80 [2021-12-17 00:39:50,226 INFO L354 Elim1Store]: treesize reduction 332, result has 13.3 percent of original size [2021-12-17 00:39:50,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 79 treesize of output 117 [2021-12-17 00:39:50,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:50,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:50,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:50,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:50,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:50,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:50,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 19 [2021-12-17 00:39:51,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 90 [2021-12-17 00:39:51,801 INFO L354 Elim1Store]: treesize reduction 387, result has 30.6 percent of original size [2021-12-17 00:39:51,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 89 treesize of output 240 [2021-12-17 00:39:52,386 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:52,487 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:52,565 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:52,771 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:52,810 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:53,073 INFO L354 Elim1Store]: treesize reduction 150, result has 22.3 percent of original size [2021-12-17 00:39:53,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 443 treesize of output 360 [2021-12-17 00:40:22,022 INFO L354 Elim1Store]: treesize reduction 2405, result has 1.3 percent of original size [2021-12-17 00:40:22,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 432 treesize of output 198 [2021-12-17 00:40:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:40:22,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:40:26,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:40:26,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408930132] [2021-12-17 00:40:26,516 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:40:26,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891326691] [2021-12-17 00:40:26,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891326691] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:40:26,517 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:40:26,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2021-12-17 00:40:26,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383245856] [2021-12-17 00:40:26,517 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:40:26,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-17 00:40:26,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:40:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-17 00:40:26,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=671, Invalid=3608, Unknown=11, NotChecked=0, Total=4290 [2021-12-17 00:40:26,520 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 43 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 00:40:27,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:40:27,571 INFO L93 Difference]: Finished difference Result 160 states and 201 transitions. [2021-12-17 00:40:27,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-12-17 00:40:27,572 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 43 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 63 [2021-12-17 00:40:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:40:27,575 INFO L225 Difference]: With dead ends: 160 [2021-12-17 00:40:27,575 INFO L226 Difference]: Without dead ends: 156 [2021-12-17 00:40:27,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2214 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=770, Invalid=4475, Unknown=11, NotChecked=0, Total=5256 [2021-12-17 00:40:27,577 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 104 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 368 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 00:40:27,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 458 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 560 Invalid, 0 Unknown, 368 Unchecked, 0.6s Time] [2021-12-17 00:40:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-12-17 00:40:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 102. [2021-12-17 00:40:27,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 87 states have (on average 1.206896551724138) internal successors, (105), 87 states have internal predecessors, (105), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-12-17 00:40:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2021-12-17 00:40:27,591 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 124 transitions. Word has length 63 [2021-12-17 00:40:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:40:27,592 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-12-17 00:40:27,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 43 states have internal predecessors, (52), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 00:40:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 124 transitions. [2021-12-17 00:40:27,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-17 00:40:27,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:40:27,593 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:40:27,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 00:40:27,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:27,802 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:40:27,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:40:27,803 INFO L85 PathProgramCache]: Analyzing trace with hash 236205423, now seen corresponding path program 1 times [2021-12-17 00:40:27,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:40:27,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345523218] [2021-12-17 00:40:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:27,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:40:27,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:40:27,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194623717] [2021-12-17 00:40:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:27,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:27,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:40:27,820 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) [2021-12-17 00:40:27,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 00:40:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:40:27,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 00:40:27,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:40:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-17 00:40:27,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:40:27,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:40:27,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345523218] [2021-12-17 00:40:27,980 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:40:27,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194623717] [2021-12-17 00:40:27,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194623717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:40:27,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:40:27,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 00:40:27,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539432179] [2021-12-17 00:40:27,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:40:27,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 00:40:27,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:40:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 00:40:27,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 00:40:27,981 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:40:28,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:40:28,010 INFO L93 Difference]: Finished difference Result 152 states and 188 transitions. [2021-12-17 00:40:28,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 00:40:28,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 63 [2021-12-17 00:40:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:40:28,012 INFO L225 Difference]: With dead ends: 152 [2021-12-17 00:40:28,012 INFO L226 Difference]: Without dead ends: 113 [2021-12-17 00:40:28,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 00:40:28,013 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 5 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:40:28,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 199 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:40:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-12-17 00:40:28,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 106. [2021-12-17 00:40:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 90 states have (on average 1.2) internal successors, (108), 90 states have internal predecessors, (108), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (13), 10 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-17 00:40:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2021-12-17 00:40:28,026 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 63 [2021-12-17 00:40:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:40:28,026 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2021-12-17 00:40:28,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:40:28,027 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2021-12-17 00:40:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-17 00:40:28,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:40:28,028 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:40:28,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 00:40:28,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:28,235 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:40:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:40:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1172698608, now seen corresponding path program 4 times [2021-12-17 00:40:28,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:40:28,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781576626] [2021-12-17 00:40:28,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:28,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:40:28,245 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:40:28,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352980505] [2021-12-17 00:40:28,245 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 00:40:28,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:28,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:40:28,249 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) [2021-12-17 00:40:28,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 00:40:28,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 00:40:28,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:40:28,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:40:28,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:40:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-17 00:40:28,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:40:28,578 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-17 00:40:28,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:40:28,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781576626] [2021-12-17 00:40:28,578 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:40:28,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352980505] [2021-12-17 00:40:28,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352980505] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:40:28,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:40:28,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-17 00:40:28,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209803581] [2021-12-17 00:40:28,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:40:28,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 00:40:28,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:40:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 00:40:28,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 00:40:28,579 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:40:28,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:40:28,774 INFO L93 Difference]: Finished difference Result 265 states and 336 transitions. [2021-12-17 00:40:28,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 00:40:28,774 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-17 00:40:28,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:40:28,776 INFO L225 Difference]: With dead ends: 265 [2021-12-17 00:40:28,776 INFO L226 Difference]: Without dead ends: 215 [2021-12-17 00:40:28,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-17 00:40:28,777 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 206 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:40:28,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 154 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 00:40:28,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-12-17 00:40:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 161. [2021-12-17 00:40:28,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 138 states have (on average 1.1884057971014492) internal successors, (164), 138 states have internal predecessors, (164), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (19), 15 states have call predecessors, (19), 13 states have call successors, (19) [2021-12-17 00:40:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 196 transitions. [2021-12-17 00:40:28,795 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 196 transitions. Word has length 65 [2021-12-17 00:40:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:40:28,796 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 196 transitions. [2021-12-17 00:40:28,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:40:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 196 transitions. [2021-12-17 00:40:28,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-17 00:40:28,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:40:28,797 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:40:28,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 00:40:29,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:29,008 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:40:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:40:29,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2109828498, now seen corresponding path program 5 times [2021-12-17 00:40:29,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:40:29,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007934688] [2021-12-17 00:40:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:29,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:40:29,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:40:29,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87681510] [2021-12-17 00:40:29,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-17 00:40:29,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:29,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:40:29,017 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) [2021-12-17 00:40:29,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 00:40:29,128 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-12-17 00:40:29,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:40:29,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:40:29,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:40:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-17 00:40:29,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:40:29,452 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-17 00:40:29,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:40:29,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007934688] [2021-12-17 00:40:29,452 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:40:29,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87681510] [2021-12-17 00:40:29,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87681510] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:40:29,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:40:29,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-17 00:40:29,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019668451] [2021-12-17 00:40:29,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:40:29,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 00:40:29,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:40:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 00:40:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-12-17 00:40:29,454 INFO L87 Difference]: Start difference. First operand 161 states and 196 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:40:29,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:40:29,680 INFO L93 Difference]: Finished difference Result 327 states and 400 transitions. [2021-12-17 00:40:29,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 00:40:29,681 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2021-12-17 00:40:29,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:40:29,682 INFO L225 Difference]: With dead ends: 327 [2021-12-17 00:40:29,682 INFO L226 Difference]: Without dead ends: 214 [2021-12-17 00:40:29,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-12-17 00:40:29,683 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 61 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:40:29,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 130 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:40:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-12-17 00:40:29,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 176. [2021-12-17 00:40:29,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 153 states have (on average 1.1895424836601307) internal successors, (182), 153 states have internal predecessors, (182), 13 states have call successors, (13), 7 states have call predecessors, (13), 9 states have return successors, (19), 15 states have call predecessors, (19), 13 states have call successors, (19) [2021-12-17 00:40:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 214 transitions. [2021-12-17 00:40:29,700 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 214 transitions. Word has length 67 [2021-12-17 00:40:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:40:29,700 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 214 transitions. [2021-12-17 00:40:29,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:40:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 214 transitions. [2021-12-17 00:40:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-17 00:40:29,702 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:40:29,702 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:40:29,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 00:40:29,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-17 00:40:29,923 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:40:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:40:29,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1276732650, now seen corresponding path program 1 times [2021-12-17 00:40:29,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:40:29,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650638020] [2021-12-17 00:40:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:29,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:40:29,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:40:29,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983259555] [2021-12-17 00:40:29,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:29,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:29,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:40:29,933 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) [2021-12-17 00:40:29,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 00:40:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:40:29,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-17 00:40:29,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:40:30,203 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 15 proven. 20 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-17 00:40:30,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:40:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 5 proven. 23 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-17 00:40:30,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:40:30,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650638020] [2021-12-17 00:40:30,444 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:40:30,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983259555] [2021-12-17 00:40:30,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983259555] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:40:30,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:40:30,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2021-12-17 00:40:30,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475063142] [2021-12-17 00:40:30,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:40:30,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-17 00:40:30,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:40:30,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-17 00:40:30,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-12-17 00:40:30,446 INFO L87 Difference]: Start difference. First operand 176 states and 214 transitions. Second operand has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-17 00:40:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:40:30,797 INFO L93 Difference]: Finished difference Result 250 states and 293 transitions. [2021-12-17 00:40:30,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 00:40:30,797 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 69 [2021-12-17 00:40:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:40:30,799 INFO L225 Difference]: With dead ends: 250 [2021-12-17 00:40:30,799 INFO L226 Difference]: Without dead ends: 207 [2021-12-17 00:40:30,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2021-12-17 00:40:30,800 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 77 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:40:30,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 250 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 00:40:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-17 00:40:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 184. [2021-12-17 00:40:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 158 states have (on average 1.1835443037974684) internal successors, (187), 160 states have internal predecessors, (187), 14 states have call successors, (14), 9 states have call predecessors, (14), 11 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2021-12-17 00:40:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 219 transitions. [2021-12-17 00:40:30,816 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 219 transitions. Word has length 69 [2021-12-17 00:40:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:40:30,817 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 219 transitions. [2021-12-17 00:40:30,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 5 states have call successors, (9), 4 states have call predecessors, (9), 7 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2021-12-17 00:40:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 219 transitions. [2021-12-17 00:40:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-17 00:40:30,818 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:40:30,818 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:40:30,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-17 00:40:31,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-17 00:40:31,031 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:40:31,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:40:31,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1130035513, now seen corresponding path program 6 times [2021-12-17 00:40:31,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:40:31,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458020337] [2021-12-17 00:40:31,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:31,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:40:31,038 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:40:31,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876170179] [2021-12-17 00:40:31,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-17 00:40:31,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:31,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:40:31,039 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) [2021-12-17 00:40:31,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-17 00:40:31,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-12-17 00:40:31,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:40:31,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:40:31,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:40:31,317 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-17 00:40:31,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:40:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-17 00:40:31,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:40:31,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458020337] [2021-12-17 00:40:31,439 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:40:31,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876170179] [2021-12-17 00:40:31,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876170179] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:40:31,439 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:40:31,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-12-17 00:40:31,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139300048] [2021-12-17 00:40:31,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:40:31,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-17 00:40:31,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:40:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-17 00:40:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-17 00:40:31,441 INFO L87 Difference]: Start difference. First operand 184 states and 219 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:40:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:40:31,644 INFO L93 Difference]: Finished difference Result 249 states and 290 transitions. [2021-12-17 00:40:31,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 00:40:31,649 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2021-12-17 00:40:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:40:31,650 INFO L225 Difference]: With dead ends: 249 [2021-12-17 00:40:31,650 INFO L226 Difference]: Without dead ends: 177 [2021-12-17 00:40:31,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-17 00:40:31,651 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 156 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:40:31,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 141 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:40:31,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-17 00:40:31,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 169. [2021-12-17 00:40:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 143 states have (on average 1.1608391608391608) internal successors, (166), 145 states have internal predecessors, (166), 14 states have call successors, (14), 9 states have call predecessors, (14), 11 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2021-12-17 00:40:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 198 transitions. [2021-12-17 00:40:31,668 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 198 transitions. Word has length 70 [2021-12-17 00:40:31,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:40:31,669 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 198 transitions. [2021-12-17 00:40:31,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 00:40:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 198 transitions. [2021-12-17 00:40:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-17 00:40:31,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:40:31,672 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:40:31,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-17 00:40:31,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-17 00:40:31,876 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:40:31,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:40:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash -698104178, now seen corresponding path program 7 times [2021-12-17 00:40:31,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:40:31,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878809365] [2021-12-17 00:40:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:31,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:40:31,884 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:40:31,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122665114] [2021-12-17 00:40:31,885 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-17 00:40:31,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:31,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:40:31,886 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) [2021-12-17 00:40:31,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-17 00:40:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:40:31,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:40:31,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:40:32,074 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 42 proven. 40 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-17 00:40:32,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:40:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-17 00:40:32,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:40:32,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878809365] [2021-12-17 00:40:32,198 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:40:32,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122665114] [2021-12-17 00:40:32,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122665114] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:40:32,198 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:40:32,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-17 00:40:32,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413091472] [2021-12-17 00:40:32,199 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:40:32,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 00:40:32,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:40:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 00:40:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 00:40:32,200 INFO L87 Difference]: Start difference. First operand 169 states and 198 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:40:32,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:40:32,375 INFO L93 Difference]: Finished difference Result 219 states and 252 transitions. [2021-12-17 00:40:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 00:40:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 74 [2021-12-17 00:40:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:40:32,377 INFO L225 Difference]: With dead ends: 219 [2021-12-17 00:40:32,377 INFO L226 Difference]: Without dead ends: 170 [2021-12-17 00:40:32,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-17 00:40:32,378 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 105 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:40:32,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 240 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:40:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-17 00:40:32,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2021-12-17 00:40:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 137 states have (on average 1.145985401459854) internal successors, (157), 138 states have internal predecessors, (157), 13 states have call successors, (13), 8 states have call predecessors, (13), 10 states have return successors, (17), 14 states have call predecessors, (17), 13 states have call successors, (17) [2021-12-17 00:40:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 187 transitions. [2021-12-17 00:40:32,389 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 187 transitions. Word has length 74 [2021-12-17 00:40:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:40:32,389 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 187 transitions. [2021-12-17 00:40:32,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-17 00:40:32,389 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 187 transitions. [2021-12-17 00:40:32,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-17 00:40:32,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:40:32,390 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:40:32,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-17 00:40:32,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-17 00:40:32,604 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:40:32,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:40:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2141231294, now seen corresponding path program 1 times [2021-12-17 00:40:32,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:40:32,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724655455] [2021-12-17 00:40:32,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:32,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:40:32,611 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:40:32,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533275249] [2021-12-17 00:40:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:32,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:32,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:40:32,613 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) [2021-12-17 00:40:32,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-17 00:40:33,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:40:33,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 72 conjunts are in the unsatisfiable core [2021-12-17 00:40:33,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:40:33,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2021-12-17 00:40:33,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-17 00:40:33,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-17 00:40:33,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 74 [2021-12-17 00:40:33,565 INFO L354 Elim1Store]: treesize reduction 160, result has 19.6 percent of original size [2021-12-17 00:40:33,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 99 [2021-12-17 00:40:33,571 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:40:33,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:33,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 28 [2021-12-17 00:40:33,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 88 [2021-12-17 00:40:33,792 INFO L354 Elim1Store]: treesize reduction 321, result has 17.3 percent of original size [2021-12-17 00:40:33,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 87 treesize of output 130 [2021-12-17 00:40:33,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:33,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:33,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:33,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 24 [2021-12-17 00:40:33,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 68 [2021-12-17 00:40:33,969 INFO L354 Elim1Store]: treesize reduction 256, result has 15.5 percent of original size [2021-12-17 00:40:33,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 67 treesize of output 103 [2021-12-17 00:40:34,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:34,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:34,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:34,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:34,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:34,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:34,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 39 [2021-12-17 00:40:59,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 94 [2021-12-17 00:40:59,190 INFO L354 Elim1Store]: treesize reduction 358, result has 37.6 percent of original size [2021-12-17 00:40:59,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 93 treesize of output 289 [2021-12-17 00:41:00,858 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:00,944 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:01,040 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:01,103 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:01,298 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:01,488 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:01,546 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:01,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:01,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:01,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:01,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:01,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:01,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:01,973 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:41:01,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 135 treesize of output 196 [2021-12-17 00:41:14,645 WARN L227 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 00:41:33,956 WARN L227 SmtUtils]: Spent 8.46s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 00:41:55,342 WARN L227 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 00:42:02,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 360 treesize of output 313 [2021-12-17 00:42:03,089 INFO L354 Elim1Store]: treesize reduction 2226, result has 17.4 percent of original size [2021-12-17 00:42:03,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 11 new quantified variables, introduced 54 case distinctions, treesize of input 313 treesize of output 596 Killed by 15