./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.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 b8588da8d66d82eb7aa3eaf3ef7c4d24b2b275bf9c1acdf38a110c8bc6eba3b7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 02:31:10,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 02:31:10,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 02:31:10,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 02:31:10,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 02:31:10,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 02:31:10,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 02:31:10,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 02:31:10,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 02:31:10,269 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 02:31:10,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 02:31:10,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 02:31:10,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 02:31:10,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 02:31:10,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 02:31:10,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 02:31:10,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 02:31:10,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 02:31:10,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 02:31:10,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 02:31:10,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 02:31:10,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 02:31:10,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 02:31:10,290 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 02:31:10,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 02:31:10,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 02:31:10,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 02:31:10,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 02:31:10,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 02:31:10,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 02:31:10,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 02:31:10,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 02:31:10,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 02:31:10,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 02:31:10,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 02:31:10,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 02:31:10,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 02:31:10,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 02:31:10,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 02:31:10,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 02:31:10,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 02:31:10,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 02:31:10,325 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 02:31:10,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 02:31:10,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 02:31:10,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 02:31:10,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 02:31:10,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 02:31:10,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 02:31:10,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 02:31:10,327 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 02:31:10,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 02:31:10,328 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 02:31:10,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 02:31:10,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 02:31:10,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 02:31:10,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 02:31:10,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 02:31:10,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 02:31:10,329 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 02:31:10,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 02:31:10,329 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 02:31:10,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 02:31:10,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 02:31:10,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 02:31:10,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 02:31:10,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:31:10,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 02:31:10,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 02:31:10,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 02:31:10,331 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 02:31:10,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 02:31:10,332 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 02:31:10,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 02:31:10,332 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 02:31:10,332 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 02:31:10,332 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 02:31:10,333 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8588da8d66d82eb7aa3eaf3ef7c4d24b2b275bf9c1acdf38a110c8bc6eba3b7 [2023-02-17 02:31:10,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 02:31:10,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 02:31:10,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 02:31:10,590 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 02:31:10,591 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 02:31:10,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.c [2023-02-17 02:31:11,684 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 02:31:11,887 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 02:31:11,887 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.c [2023-02-17 02:31:11,893 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc673aa5/0c7fb2f74bb34222bde6398a55a239c7/FLAGe58c57871 [2023-02-17 02:31:11,912 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfc673aa5/0c7fb2f74bb34222bde6398a55a239c7 [2023-02-17 02:31:11,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 02:31:11,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 02:31:11,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 02:31:11,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 02:31:11,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 02:31:11,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:31:11" (1/1) ... [2023-02-17 02:31:11,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84b86a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:11, skipping insertion in model container [2023-02-17 02:31:11,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:31:11" (1/1) ... [2023-02-17 02:31:11,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 02:31:11,947 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 02:31:12,068 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.c[458,471] [2023-02-17 02:31:12,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:31:12,091 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 02:31:12,100 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound100.c[458,471] [2023-02-17 02:31:12,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:31:12,116 INFO L208 MainTranslator]: Completed translation [2023-02-17 02:31:12,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12 WrapperNode [2023-02-17 02:31:12,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 02:31:12,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 02:31:12,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 02:31:12,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 02:31:12,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,142 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-17 02:31:12,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 02:31:12,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 02:31:12,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 02:31:12,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 02:31:12,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,158 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 02:31:12,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 02:31:12,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 02:31:12,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 02:31:12,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (1/1) ... [2023-02-17 02:31:12,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:31:12,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:12,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 02:31:12,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 02:31:12,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 02:31:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 02:31:12,246 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 02:31:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 02:31:12,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 02:31:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 02:31:12,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-17 02:31:12,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-17 02:31:12,315 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 02:31:12,317 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 02:31:12,486 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 02:31:12,505 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 02:31:12,506 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 02:31:12,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:31:12 BoogieIcfgContainer [2023-02-17 02:31:12,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 02:31:12,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 02:31:12,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 02:31:12,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 02:31:12,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 02:31:11" (1/3) ... [2023-02-17 02:31:12,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f892ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:31:12, skipping insertion in model container [2023-02-17 02:31:12,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:31:12" (2/3) ... [2023-02-17 02:31:12,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f892ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:31:12, skipping insertion in model container [2023-02-17 02:31:12,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:31:12" (3/3) ... [2023-02-17 02:31:12,515 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound100.c [2023-02-17 02:31:12,562 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 02:31:12,563 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 02:31:12,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 02:31:12,630 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2da8f09b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 02:31:12,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 02:31:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2023-02-17 02:31:12,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 02:31:12,657 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:12,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:12,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:12,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:12,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1845349065, now seen corresponding path program 1 times [2023-02-17 02:31:12,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:12,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072843690] [2023-02-17 02:31:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:12,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:31:12,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:31:12,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072843690] [2023-02-17 02:31:12,791 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-17 02:31:12,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289479415] [2023-02-17 02:31:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:12,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:12,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:12,796 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:31:12,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 02:31:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:31:12,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 02:31:12,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:31:12,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 02:31:12,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 02:31:12,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289479415] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:31:12,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:31:12,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 02:31:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097738430] [2023-02-17 02:31:12,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:31:12,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 02:31:12,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:31:12,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 02:31:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 02:31:12,909 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 02:31:12,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:31:12,928 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2023-02-17 02:31:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 02:31:12,930 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-17 02:31:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:31:12,935 INFO L225 Difference]: With dead ends: 45 [2023-02-17 02:31:12,936 INFO L226 Difference]: Without dead ends: 20 [2023-02-17 02:31:12,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 02:31:12,945 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:31:12,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:31:12,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-17 02:31:12,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-17 02:31:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 02:31:12,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-17 02:31:12,982 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2023-02-17 02:31:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:31:12,983 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-17 02:31:12,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 02:31:12,983 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-17 02:31:12,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 02:31:12,984 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:12,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:12,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 02:31:13,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-17 02:31:13,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:13,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:13,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1506842435, now seen corresponding path program 1 times [2023-02-17 02:31:13,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:13,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781621416] [2023-02-17 02:31:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:13,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:13,207 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:31:13,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307514888] [2023-02-17 02:31:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:13,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:13,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:13,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:31:13,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 02:31:13,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:31:13,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 02:31:13,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:31:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 02:31:13,297 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 02:31:13,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:31:13,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781621416] [2023-02-17 02:31:13,297 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:31:13,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307514888] [2023-02-17 02:31:13,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307514888] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:31:13,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:31:13,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 02:31:13,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582241865] [2023-02-17 02:31:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:31:13,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 02:31:13,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:31:13,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 02:31:13,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:31:13,301 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 02:31:13,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:31:13,453 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-02-17 02:31:13,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:31:13,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-17 02:31:13,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:31:13,455 INFO L225 Difference]: With dead ends: 31 [2023-02-17 02:31:13,455 INFO L226 Difference]: Without dead ends: 27 [2023-02-17 02:31:13,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 02:31:13,457 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:31:13,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 69 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:31:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-17 02:31:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-17 02:31:13,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 02:31:13,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-02-17 02:31:13,464 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2023-02-17 02:31:13,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:31:13,465 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-02-17 02:31:13,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 02:31:13,465 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-02-17 02:31:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 02:31:13,466 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:13,466 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:13,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 02:31:13,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-17 02:31:13,667 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:13,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:13,669 INFO L85 PathProgramCache]: Analyzing trace with hash 903983968, now seen corresponding path program 1 times [2023-02-17 02:31:13,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:13,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63174633] [2023-02-17 02:31:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:13,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:13,693 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:31:13,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573207045] [2023-02-17 02:31:13,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:13,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:13,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:13,698 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:31:13,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 02:31:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:31:13,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-17 02:31:13,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:31:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 02:31:13,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:31:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-17 02:31:14,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:31:14,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63174633] [2023-02-17 02:31:14,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:31:14,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573207045] [2023-02-17 02:31:14,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573207045] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:31:14,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 02:31:14,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-02-17 02:31:14,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427760616] [2023-02-17 02:31:14,249 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 02:31:14,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 02:31:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:31:14,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 02:31:14,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-17 02:31:14,251 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 02:31:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:31:14,386 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-02-17 02:31:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 02:31:14,388 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-02-17 02:31:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:31:14,390 INFO L225 Difference]: With dead ends: 38 [2023-02-17 02:31:14,390 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 02:31:14,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-02-17 02:31:14,396 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:31:14,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 89 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:31:14,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 02:31:14,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-02-17 02:31:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-17 02:31:14,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-02-17 02:31:14,422 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2023-02-17 02:31:14,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:31:14,423 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-02-17 02:31:14,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 02:31:14,423 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-02-17 02:31:14,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 02:31:14,425 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:14,425 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:14,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 02:31:14,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:14,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:14,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1648043046, now seen corresponding path program 1 times [2023-02-17 02:31:14,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:14,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972320916] [2023-02-17 02:31:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:14,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:14,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:31:14,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75137763] [2023-02-17 02:31:14,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:14,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:14,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:14,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:31:14,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 02:31:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:31:14,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-17 02:31:14,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:31:16,745 WARN L859 $PredicateComparison]: unable to prove that (and (< 0 |c_ULTIMATE.start_main_~k~0#1|) (= |c_ULTIMATE.start_main_~y~0#1| (+ 0 1)) (<= |c_ULTIMATE.start_main_~k~0#1| 1) (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) is different from true [2023-02-17 02:31:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 02:31:16,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:31:18,814 WARN L837 $PredicateComparison]: unable to prove that (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) is different from false [2023-02-17 02:31:22,864 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int)) (or (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) (= (mod (+ (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 11 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 5 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 12) 0)))) is different from true [2023-02-17 02:31:28,903 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (= c___VERIFIER_assert_~cond 0) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| Int)) (or (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_4| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) (= (mod (+ (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 11 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|) (* 5 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_9|)) 12) 0)))) is different from true [2023-02-17 02:31:37,024 WARN L837 $PredicateComparison]: unable to prove that (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (let ((.cse0 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (= (* |ULTIMATE.start_main_~k~0#1| .cse0) (* .cse0 .cse0))) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|)))) is different from false [2023-02-17 02:31:37,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:31:37,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972320916] [2023-02-17 02:31:37,035 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:31:37,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75137763] [2023-02-17 02:31:37,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75137763] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:31:37,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:31:37,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-02-17 02:31:37,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082064296] [2023-02-17 02:31:37,036 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:31:37,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 02:31:37,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:31:37,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 02:31:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=106, Unknown=7, NotChecked=120, Total=272 [2023-02-17 02:31:37,038 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 02:31:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:31:37,177 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2023-02-17 02:31:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 02:31:37,178 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2023-02-17 02:31:37,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:31:37,179 INFO L225 Difference]: With dead ends: 38 [2023-02-17 02:31:37,179 INFO L226 Difference]: Without dead ends: 32 [2023-02-17 02:31:37,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=58, Invalid=165, Unknown=7, NotChecked=150, Total=380 [2023-02-17 02:31:37,180 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:31:37,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 105 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2023-02-17 02:31:37,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-17 02:31:37,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-17 02:31:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-17 02:31:37,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2023-02-17 02:31:37,195 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 36 [2023-02-17 02:31:37,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:31:37,196 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2023-02-17 02:31:37,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 02:31:37,196 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2023-02-17 02:31:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 02:31:37,197 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:37,197 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:37,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 02:31:37,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:37,398 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:37,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash -426505545, now seen corresponding path program 2 times [2023-02-17 02:31:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:37,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523057006] [2023-02-17 02:31:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:37,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:37,413 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:31:37,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993942184] [2023-02-17 02:31:37,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 02:31:37,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:37,422 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) [2023-02-17 02:31:37,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 02:31:37,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 02:31:37,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:31:37,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-17 02:31:37,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:31:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-17 02:31:37,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:31:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-17 02:31:37,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:31:37,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523057006] [2023-02-17 02:31:37,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:31:37,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993942184] [2023-02-17 02:31:37,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993942184] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:31:37,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 02:31:37,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-02-17 02:31:37,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410487656] [2023-02-17 02:31:37,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 02:31:37,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 02:31:37,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:31:37,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 02:31:37,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-02-17 02:31:37,680 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-02-17 02:31:38,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:31:38,051 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2023-02-17 02:31:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-17 02:31:38,053 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 43 [2023-02-17 02:31:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:31:38,054 INFO L225 Difference]: With dead ends: 51 [2023-02-17 02:31:38,054 INFO L226 Difference]: Without dead ends: 43 [2023-02-17 02:31:38,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-02-17 02:31:38,055 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 02:31:38,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 175 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 02:31:38,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-17 02:31:38,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2023-02-17 02:31:38,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-17 02:31:38,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2023-02-17 02:31:38,075 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 43 [2023-02-17 02:31:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:31:38,076 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2023-02-17 02:31:38,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-02-17 02:31:38,077 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2023-02-17 02:31:38,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-17 02:31:38,078 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:38,078 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:38,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 02:31:38,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:38,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:38,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:38,289 INFO L85 PathProgramCache]: Analyzing trace with hash 66449050, now seen corresponding path program 3 times [2023-02-17 02:31:38,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:38,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837125951] [2023-02-17 02:31:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:38,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:31:38,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1959935379] [2023-02-17 02:31:38,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 02:31:38,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:38,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:38,304 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) [2023-02-17 02:31:38,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 02:31:38,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-17 02:31:38,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:31:38,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-17 02:31:38,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:31:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 55 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-02-17 02:31:38,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:31:38,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:31:38,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837125951] [2023-02-17 02:31:38,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:31:38,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959935379] [2023-02-17 02:31:38,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959935379] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:31:38,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:31:38,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-02-17 02:31:38,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689078615] [2023-02-17 02:31:38,905 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:31:38,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-17 02:31:38,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:31:38,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-17 02:31:38,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-02-17 02:31:38,907 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 8 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-17 02:31:39,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:31:39,159 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2023-02-17 02:31:39,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 02:31:39,159 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 8 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 64 [2023-02-17 02:31:39,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:31:39,160 INFO L225 Difference]: With dead ends: 50 [2023-02-17 02:31:39,160 INFO L226 Difference]: Without dead ends: 44 [2023-02-17 02:31:39,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-17 02:31:39,162 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 02:31:39,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 188 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 02:31:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-17 02:31:39,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-02-17 02:31:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-17 02:31:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2023-02-17 02:31:39,174 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 64 [2023-02-17 02:31:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:31:39,175 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2023-02-17 02:31:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 8 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-17 02:31:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2023-02-17 02:31:39,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-17 02:31:39,181 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:39,182 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:39,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 02:31:39,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:39,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:39,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:39,389 INFO L85 PathProgramCache]: Analyzing trace with hash 357326839, now seen corresponding path program 4 times [2023-02-17 02:31:39,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:39,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241373451] [2023-02-17 02:31:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:39,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:39,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:31:39,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1514839084] [2023-02-17 02:31:39,407 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 02:31:39,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:39,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:39,408 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) [2023-02-17 02:31:39,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 02:31:39,452 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 02:31:39,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:31:39,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-17 02:31:39,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:31:39,526 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-02-17 02:31:39,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:31:39,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:31:39,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241373451] [2023-02-17 02:31:39,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:31:39,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514839084] [2023-02-17 02:31:39,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514839084] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:31:39,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:31:39,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-17 02:31:39,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227585439] [2023-02-17 02:31:39,669 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:31:39,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 02:31:39,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:31:39,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 02:31:39,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-02-17 02:31:39,671 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-17 02:31:39,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:31:39,902 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2023-02-17 02:31:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 02:31:39,903 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 71 [2023-02-17 02:31:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:31:39,904 INFO L225 Difference]: With dead ends: 53 [2023-02-17 02:31:39,904 INFO L226 Difference]: Without dead ends: 47 [2023-02-17 02:31:39,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-02-17 02:31:39,905 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 02:31:39,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 266 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 02:31:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-17 02:31:39,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-02-17 02:31:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-17 02:31:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2023-02-17 02:31:39,920 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 71 [2023-02-17 02:31:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:31:39,920 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2023-02-17 02:31:39,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-17 02:31:39,921 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2023-02-17 02:31:39,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-02-17 02:31:39,921 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:39,922 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:39,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 02:31:40,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:40,127 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:40,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash 416422906, now seen corresponding path program 5 times [2023-02-17 02:31:40,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:40,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874494798] [2023-02-17 02:31:40,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:40,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:40,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:31:40,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119443203] [2023-02-17 02:31:40,139 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 02:31:40,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:40,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:40,141 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) [2023-02-17 02:31:40,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 02:31:40,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-02-17 02:31:40,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:31:40,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-17 02:31:40,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:31:40,671 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 20 proven. 106 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-02-17 02:31:40,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:31:40,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:31:40,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874494798] [2023-02-17 02:31:40,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:31:40,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119443203] [2023-02-17 02:31:40,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119443203] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:31:40,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:31:40,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-02-17 02:31:40,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46091359] [2023-02-17 02:31:40,768 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:31:40,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-17 02:31:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:31:40,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-17 02:31:40,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-02-17 02:31:40,769 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-02-17 02:31:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:31:41,122 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2023-02-17 02:31:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 02:31:41,123 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) Word has length 78 [2023-02-17 02:31:41,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:31:41,124 INFO L225 Difference]: With dead ends: 56 [2023-02-17 02:31:41,124 INFO L226 Difference]: Without dead ends: 50 [2023-02-17 02:31:41,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-02-17 02:31:41,125 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 02:31:41,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 267 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 02:31:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-17 02:31:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-17 02:31:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-17 02:31:41,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2023-02-17 02:31:41,140 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 78 [2023-02-17 02:31:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:31:41,140 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2023-02-17 02:31:41,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-02-17 02:31:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2023-02-17 02:31:41,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-02-17 02:31:41,142 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:41,142 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:41,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 02:31:41,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-17 02:31:41,351 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:41,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:41,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1706793321, now seen corresponding path program 6 times [2023-02-17 02:31:41,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:41,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135432465] [2023-02-17 02:31:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:41,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:41,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:31:41,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64073354] [2023-02-17 02:31:41,362 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 02:31:41,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:41,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:41,363 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) [2023-02-17 02:31:41,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 02:31:55,980 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-17 02:31:55,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:31:55,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-17 02:31:55,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:31:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 22 proven. 133 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-02-17 02:31:56,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:31:58,520 WARN L837 $PredicateComparison]: unable to prove that (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (let ((.cse0 (+ (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1) 1))) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ .cse0 1) |ULTIMATE.start_main_~k~0#1|) (let ((.cse1 (+ 1 (+ (+ (+ (+ (+ 1 (+ |c_ULTIMATE.start_main_~y~0#1| 1)) 1) 1) 1) 1)))) (= (* .cse1 |ULTIMATE.start_main_~k~0#1|) (* .cse1 .cse1))) (not (< .cse0 |ULTIMATE.start_main_~k~0#1|)))))) is different from false [2023-02-17 02:31:58,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:31:58,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135432465] [2023-02-17 02:31:58,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:31:58,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64073354] [2023-02-17 02:31:58,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64073354] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:31:58,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:31:58,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-02-17 02:31:58,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964932987] [2023-02-17 02:31:58,523 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:31:58,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 02:31:58,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:31:58,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 02:31:58,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=537, Unknown=1, NotChecked=48, Total=702 [2023-02-17 02:31:58,525 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-02-17 02:31:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:31:58,925 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2023-02-17 02:31:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 02:31:58,925 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 85 [2023-02-17 02:31:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:31:58,926 INFO L225 Difference]: With dead ends: 59 [2023-02-17 02:31:58,927 INFO L226 Difference]: Without dead ends: 53 [2023-02-17 02:31:58,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=135, Invalid=680, Unknown=1, NotChecked=54, Total=870 [2023-02-17 02:31:58,928 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 02:31:58,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 289 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 02:31:58,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-17 02:31:58,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-17 02:31:58,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-17 02:31:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2023-02-17 02:31:58,942 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 85 [2023-02-17 02:31:58,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:31:58,943 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2023-02-17 02:31:58,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-02-17 02:31:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2023-02-17 02:31:58,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-02-17 02:31:58,944 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:31:58,945 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:31:58,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 02:31:59,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:59,159 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:31:59,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:31:59,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1063034534, now seen corresponding path program 7 times [2023-02-17 02:31:59,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:31:59,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983364209] [2023-02-17 02:31:59,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:31:59,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:31:59,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:31:59,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [374891649] [2023-02-17 02:31:59,171 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 02:31:59,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:31:59,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:31:59,175 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) [2023-02-17 02:31:59,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 02:32:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:32:02,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-17 02:32:02,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:32:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 51 proven. 136 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-02-17 02:32:02,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:32:04,790 WARN L837 $PredicateComparison]: unable to prove that (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) is different from false [2023-02-17 02:32:08,810 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_51| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_51|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| 11) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| 5)) 12) 0)))) is different from true [2023-02-17 02:32:14,833 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_51| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_51|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| 6) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| 11) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_84| 5)) 12) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-02-17 02:32:16,959 WARN L837 $PredicateComparison]: unable to prove that (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (let ((.cse0 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (= (* |ULTIMATE.start_main_~k~0#1| .cse0) (* .cse0 .cse0))) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|)))) is different from false [2023-02-17 02:32:16,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:32:16,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983364209] [2023-02-17 02:32:16,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:32:16,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374891649] [2023-02-17 02:32:16,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374891649] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:32:16,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:32:16,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-02-17 02:32:16,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596836185] [2023-02-17 02:32:16,966 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:32:16,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 02:32:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:32:16,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 02:32:16,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=339, Unknown=4, NotChecked=156, Total=552 [2023-02-17 02:32:16,968 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 12 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-02-17 02:32:17,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:32:17,387 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-02-17 02:32:17,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-17 02:32:17,387 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 12 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 92 [2023-02-17 02:32:17,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:32:17,388 INFO L225 Difference]: With dead ends: 62 [2023-02-17 02:32:17,388 INFO L226 Difference]: Without dead ends: 56 [2023-02-17 02:32:17,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=72, Invalid=446, Unknown=4, NotChecked=180, Total=702 [2023-02-17 02:32:17,389 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 02:32:17,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 337 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 02:32:17,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-17 02:32:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-17 02:32:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-17 02:32:17,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2023-02-17 02:32:17,413 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 92 [2023-02-17 02:32:17,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:32:17,413 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2023-02-17 02:32:17,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 12 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-02-17 02:32:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2023-02-17 02:32:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-02-17 02:32:17,416 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:32:17,416 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:32:17,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 02:32:17,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-17 02:32:17,624 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:32:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:32:17,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1524389175, now seen corresponding path program 8 times [2023-02-17 02:32:17,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:32:17,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205372685] [2023-02-17 02:32:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:32:17,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:32:17,634 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:32:17,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394394755] [2023-02-17 02:32:17,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 02:32:17,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:32:17,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:32:17,636 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) [2023-02-17 02:32:17,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 02:32:18,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 02:32:18,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:32:18,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 62 conjunts are in the unsatisfiable core [2023-02-17 02:32:18,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:32:20,654 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 1))) (and (= .cse0 (+ (- 1) |c_ULTIMATE.start_main_~y~0#1|)) (>= |c_ULTIMATE.start_main_~x~0#1| (let ((.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (+ (* |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| .cse1))) (div (+ (* (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (- 6)) (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (- .cse1) (* 5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) 12)))) (<= |c_ULTIMATE.start_main_~c~0#1| (+ .cse0 1)) (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12)) (< .cse0 |c_ULTIMATE.start_main_~k~0#1|))) is different from true [2023-02-17 02:32:22,673 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 1))) (and (= .cse0 (+ (- 1) |c_ULTIMATE.start_main_~y~0#1|)) (<= |c_ULTIMATE.start_main_~c~0#1| (+ .cse0 1)) (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12)) (let ((.cse5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse4 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse2 (- .cse5)) (.cse3 (* 5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)))) (>= (div (+ .cse1 .cse2 .cse3 (* .cse4 6)) 12) (+ (* |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| .cse5))) (div (+ (* .cse4 (- 6)) .cse1 .cse2 .cse3) 12))))) (< .cse0 |c_ULTIMATE.start_main_~k~0#1|))) is different from true [2023-02-17 02:32:25,631 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 1))) (and (= .cse0 (+ (- 1) |c_ULTIMATE.start_main_~y~0#1|)) (<= |c_ULTIMATE.start_main_~k~0#1| 10) (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12)) (let ((.cse5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (let ((.cse4 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse2 (- .cse5)) (.cse3 (* 5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)))) (>= (div (+ .cse1 .cse2 .cse3 (* .cse4 6)) 12) (+ (* |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| (* |c_ULTIMATE.start_main_~y~0#1| .cse5))) (div (+ (* .cse4 (- 6)) .cse1 .cse2 .cse3) 12))))) (< .cse0 |c_ULTIMATE.start_main_~k~0#1|))) is different from true [2023-02-17 02:32:25,671 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 76 proven. 143 refuted. 0 times theorem prover too weak. 208 trivial. 30 not checked. [2023-02-17 02:32:25,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:32:52,607 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse4 (* .cse5 .cse5))) (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) (not (let ((.cse0 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (>= (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) (* |c_ULTIMATE.start_main_~y~0#1| 5) (div (+ .cse0 (* 119 .cse1) (* .cse2 65) (* .cse3 18)) 12) 1) (+ (div (+ .cse0 (- .cse1) (* 5 .cse2) (* .cse3 6)) 12) (* (* (* .cse4 .cse5) .cse5) .cse5))))) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (* |ULTIMATE.start_main_~k~0#1| .cse5) .cse4) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|)))))) is different from false [2023-02-17 02:32:52,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:32:52,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205372685] [2023-02-17 02:32:52,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:32:52,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394394755] [2023-02-17 02:32:52,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394394755] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:32:52,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:32:52,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-02-17 02:32:52,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200378148] [2023-02-17 02:32:52,611 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:32:52,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 02:32:52,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:32:52,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 02:32:52,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=435, Unknown=13, NotChecked=180, Total=702 [2023-02-17 02:32:52,612 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 13 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-02-17 02:32:52,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:32:52,969 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2023-02-17 02:32:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-17 02:32:52,970 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 13 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 99 [2023-02-17 02:32:52,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:32:52,971 INFO L225 Difference]: With dead ends: 65 [2023-02-17 02:32:52,971 INFO L226 Difference]: Without dead ends: 59 [2023-02-17 02:32:52,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=89, Invalid=514, Unknown=13, NotChecked=196, Total=812 [2023-02-17 02:32:52,972 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 02:32:52,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 322 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 514 Invalid, 0 Unknown, 243 Unchecked, 0.3s Time] [2023-02-17 02:32:52,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-17 02:32:52,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-17 02:32:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 16 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-17 02:32:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2023-02-17 02:32:52,989 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 99 [2023-02-17 02:32:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:32:52,990 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2023-02-17 02:32:52,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 13 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2023-02-17 02:32:52,990 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2023-02-17 02:32:52,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-02-17 02:32:52,991 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:32:52,991 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:32:53,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 02:32:53,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-17 02:32:53,208 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:32:53,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:32:53,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1130381638, now seen corresponding path program 9 times [2023-02-17 02:32:53,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:32:53,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754325441] [2023-02-17 02:32:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:32:53,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:32:53,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:32:53,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270737866] [2023-02-17 02:32:53,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 02:32:53,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:32:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:32:53,220 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) [2023-02-17 02:32:53,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 02:33:22,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-02-17 02:33:22,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:22,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 60 conjunts are in the unsatisfiable core [2023-02-17 02:33:22,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:25,083 WARN L859 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~c~0#1| (+ 8 1)) (= (+ (- 1) |c_ULTIMATE.start_main_~y~0#1|) (+ (+ 6 1) 1)) (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) is different from true [2023-02-17 02:33:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 52 proven. 197 refuted. 0 times theorem prover too weak. 280 trivial. 11 not checked. [2023-02-17 02:33:27,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:31,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:31,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754325441] [2023-02-17 02:33:31,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:33:31,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270737866] [2023-02-17 02:33:31,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270737866] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:31,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:33:31,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-02-17 02:33:31,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391551668] [2023-02-17 02:33:31,294 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:31,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 02:33:31,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:31,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 02:33:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=444, Unknown=2, NotChecked=42, Total=552 [2023-02-17 02:33:31,296 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 14 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-02-17 02:33:33,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:35,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:37,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:41,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:43,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:45,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:47,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:49,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:51,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:53,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:55,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:57,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:33:59,625 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (+ (+ 8 1) 1))) (and (<= |c_ULTIMATE.start_main_~k~0#1| 11) (<= |c_ULTIMATE.start_main_~c~0#1| (+ .cse0 1)) (= (+ (- 1) (+ (- 1) (+ (- 1) |c_ULTIMATE.start_main_~y~0#1|))) (+ (+ 6 1) 1)) (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12)) (< .cse0 |c_ULTIMATE.start_main_~k~0#1|))) is different from true [2023-02-17 02:34:01,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:34:03,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:34:05,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-17 02:34:05,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:34:05,431 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2023-02-17 02:34:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-17 02:34:05,433 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 14 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) Word has length 106 [2023-02-17 02:34:05,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:34:05,434 INFO L225 Difference]: With dead ends: 68 [2023-02-17 02:34:05,434 INFO L226 Difference]: Without dead ends: 62 [2023-02-17 02:34:05,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=79, Invalid=526, Unknown=3, NotChecked=94, Total=702 [2023-02-17 02:34:05,435 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 0 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:34:05,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 415 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 751 Invalid, 13 Unknown, 88 Unchecked, 30.1s Time] [2023-02-17 02:34:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-17 02:34:05,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-02-17 02:34:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.024390243902439) internal successors, (42), 41 states have internal predecessors, (42), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-17 02:34:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2023-02-17 02:34:05,454 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 106 [2023-02-17 02:34:05,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:34:05,454 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2023-02-17 02:34:05,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 14 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-02-17 02:34:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2023-02-17 02:34:05,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-17 02:34:05,455 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:34:05,456 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 13, 13, 13, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:34:05,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 02:34:05,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-17 02:34:05,670 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:34:05,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:34:05,671 INFO L85 PathProgramCache]: Analyzing trace with hash -316789801, now seen corresponding path program 10 times [2023-02-17 02:34:05,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:34:05,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257282951] [2023-02-17 02:34:05,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:34:05,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:34:05,682 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:34:05,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513205314] [2023-02-17 02:34:05,682 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 02:34:05,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:34:05,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:34:05,684 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:34:05,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 02:34:05,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 02:34:05,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:34:05,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-17 02:34:05,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:34:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 28 proven. 234 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-02-17 02:34:05,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:34:05,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:34:05,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257282951] [2023-02-17 02:34:05,982 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:34:05,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513205314] [2023-02-17 02:34:05,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513205314] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:34:05,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:34:05,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-02-17 02:34:05,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398831821] [2023-02-17 02:34:05,982 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:34:05,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-17 02:34:05,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:34:05,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-17 02:34:05,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2023-02-17 02:34:05,984 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 15 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-02-17 02:34:06,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:34:06,427 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2023-02-17 02:34:06,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-17 02:34:06,428 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 15 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) Word has length 113 [2023-02-17 02:34:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:34:06,428 INFO L225 Difference]: With dead ends: 71 [2023-02-17 02:34:06,428 INFO L226 Difference]: Without dead ends: 65 [2023-02-17 02:34:06,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2023-02-17 02:34:06,429 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 2 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 02:34:06,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 518 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 02:34:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-17 02:34:06,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2023-02-17 02:34:06,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 43 states have internal predecessors, (44), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-17 02:34:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2023-02-17 02:34:06,448 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 113 [2023-02-17 02:34:06,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:34:06,449 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2023-02-17 02:34:06,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 15 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-02-17 02:34:06,449 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2023-02-17 02:34:06,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-02-17 02:34:06,450 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:34:06,450 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 14, 14, 14, 13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:34:06,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-17 02:34:06,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-17 02:34:06,657 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:34:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:34:06,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2004694042, now seen corresponding path program 11 times [2023-02-17 02:34:06,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:34:06,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684476131] [2023-02-17 02:34:06,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:34:06,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:34:06,675 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:34:06,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1609457467] [2023-02-17 02:34:06,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 02:34:06,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:34:06,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:34:06,682 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:34:06,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 02:34:08,044 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-02-17 02:34:08,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:34:08,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-17 02:34:08,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:34:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 727 backedges. 71 proven. 274 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2023-02-17 02:34:08,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:34:56,093 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_71| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_71|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| 11) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| 6) (* 5 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150|)) 12) 0)))) is different from true [2023-02-17 02:35:02,109 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (= c___VERIFIER_assert_~cond 0) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_71| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_71|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150|)) (= (mod (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| 11) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| 2) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| 6) (* 5 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_150|)) 12) 0)))) is different from true [2023-02-17 02:35:04,158 WARN L837 $PredicateComparison]: unable to prove that (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 6)) 12))) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (let ((.cse0 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (= (* |ULTIMATE.start_main_~k~0#1| .cse0) (* .cse0 .cse0))) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|)))) is different from false [2023-02-17 02:35:04,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:35:04,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684476131] [2023-02-17 02:35:04,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 02:35:04,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609457467] [2023-02-17 02:35:04,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609457467] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:35:04,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-17 02:35:04,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2023-02-17 02:35:04,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085976941] [2023-02-17 02:35:04,163 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-17 02:35:04,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-17 02:35:04,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:35:04,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-17 02:35:04,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=524, Unknown=23, NotChecked=144, Total=756 [2023-02-17 02:35:04,165 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 16 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2023-02-17 02:35:10,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:35:10,749 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2023-02-17 02:35:10,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-17 02:35:10,749 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 16 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) Word has length 120 [2023-02-17 02:35:10,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:35:10,750 INFO L225 Difference]: With dead ends: 74 [2023-02-17 02:35:10,750 INFO L226 Difference]: Without dead ends: 68 [2023-02-17 02:35:10,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 56.1s TimeCoverageRelationStatistics Valid=85, Invalid=657, Unknown=26, NotChecked=162, Total=930 [2023-02-17 02:35:10,751 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 02:35:10,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 476 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 954 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 02:35:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-17 02:35:10,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-02-17 02:35:10,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 45 states have (on average 1.0222222222222221) internal successors, (46), 45 states have internal predecessors, (46), 19 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-02-17 02:35:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 83 transitions. [2023-02-17 02:35:10,770 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 83 transitions. Word has length 120 [2023-02-17 02:35:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:35:10,770 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 83 transitions. [2023-02-17 02:35:10,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 16 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 16 states have call predecessors, (17), 16 states have call successors, (17) [2023-02-17 02:35:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 83 transitions. [2023-02-17 02:35:10,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-02-17 02:35:10,771 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:35:10,771 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 15, 15, 15, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:35:10,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-17 02:35:10,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:35:10,972 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:35:10,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:35:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1919686025, now seen corresponding path program 12 times [2023-02-17 02:35:10,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:35:10,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047358961] [2023-02-17 02:35:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:35:10,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:35:10,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 02:35:10,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1652195653] [2023-02-17 02:35:10,981 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 02:35:10,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:35:10,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:35:10,983 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:35:10,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process