./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/ssina.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-fpi/ssina.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 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:38:15,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:38:15,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:38:15,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:38:15,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:38:15,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:38:15,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:38:15,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:38:15,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:38:15,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:38:15,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:38:15,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:38:15,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:38:15,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:38:15,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:38:15,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:38:15,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:38:15,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:38:15,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:38:15,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:38:15,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:38:15,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:38:15,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:38:15,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:38:15,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:38:15,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:38:15,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:38:15,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:38:15,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:38:15,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:38:15,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:38:15,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:38:15,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:38:15,165 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:38:15,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:38:15,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:38:15,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:38:15,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:38:15,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:38:15,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:38:15,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:38:15,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:38:15,202 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:38:15,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:38:15,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:38:15,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:38:15,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:38:15,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:38:15,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:38:15,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:38:15,205 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:38:15,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:38:15,206 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:38:15,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:38:15,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:38:15,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:38:15,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:38:15,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:38:15,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:38:15,208 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:38:15,208 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:38:15,208 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:38:15,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:38:15,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:38:15,209 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:38:15,209 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:38:15,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:38:15,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:38:15,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:38:15,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:38:15,210 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:38:15,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:38:15,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:38:15,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:38:15,211 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:38:15,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:38:15,211 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:38:15,211 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c9ca6c94ff0fae82185b19014fc033eef7a37c04f3b092e10c4eebb38e41241 [2023-02-16 00:38:15,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:38:15,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:38:15,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:38:15,433 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:38:15,434 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:38:15,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ssina.c [2023-02-16 00:38:16,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:38:16,795 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:38:16,796 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ssina.c [2023-02-16 00:38:16,802 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d318318/79da4d986c5d4a3b90e1805e314838d3/FLAG6ae3bf8ef [2023-02-16 00:38:16,813 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5d318318/79da4d986c5d4a3b90e1805e314838d3 [2023-02-16 00:38:16,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:38:16,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:38:16,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:38:16,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:38:16,821 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:38:16,822 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:38:16" (1/1) ... [2023-02-16 00:38:16,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cfed9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:16, skipping insertion in model container [2023-02-16 00:38:16,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:38:16" (1/1) ... [2023-02-16 00:38:16,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:38:16,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:38:16,960 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/array-fpi/ssina.c[588,601] [2023-02-16 00:38:17,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:38:17,012 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:38:17,026 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/array-fpi/ssina.c[588,601] [2023-02-16 00:38:17,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:38:17,045 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:38:17,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17 WrapperNode [2023-02-16 00:38:17,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:38:17,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:38:17,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:38:17,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:38:17,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,070 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,100 INFO L138 Inliner]: procedures = 17, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2023-02-16 00:38:17,101 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:38:17,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:38:17,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:38:17,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:38:17,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,152 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:38:17,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:38:17,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:38:17,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:38:17,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (1/1) ... [2023-02-16 00:38:17,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:38:17,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:38:17,190 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) [2023-02-16 00:38:17,217 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 [2023-02-16 00:38:17,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:38:17,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:38:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 00:38:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-16 00:38:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 00:38:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:38:17,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:38:17,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-16 00:38:17,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 00:38:17,321 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:38:17,324 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:38:17,491 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:38:17,496 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:38:17,497 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2023-02-16 00:38:17,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:38:17 BoogieIcfgContainer [2023-02-16 00:38:17,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:38:17,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:38:17,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:38:17,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:38:17,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:38:16" (1/3) ... [2023-02-16 00:38:17,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523e1501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:38:17, skipping insertion in model container [2023-02-16 00:38:17,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:38:17" (2/3) ... [2023-02-16 00:38:17,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523e1501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:38:17, skipping insertion in model container [2023-02-16 00:38:17,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:38:17" (3/3) ... [2023-02-16 00:38:17,514 INFO L112 eAbstractionObserver]: Analyzing ICFG ssina.c [2023-02-16 00:38:17,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:38:17,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:38:17,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:38:17,569 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;@129c7654, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:38:17,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:38:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:17,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 00:38:17,578 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:38:17,578 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:38:17,579 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:38:17,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:38:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash -635308358, now seen corresponding path program 1 times [2023-02-16 00:38:17,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:38:17,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652284840] [2023-02-16 00:38:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:38:17,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:38:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:38:17,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:38:17,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652284840] [2023-02-16 00:38:17,748 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 00:38:17,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604726845] [2023-02-16 00:38:17,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:38:17,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:38:17,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:38:17,753 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) [2023-02-16 00:38:17,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:38:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:38:17,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 00:38:17,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:38:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:38:17,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:38:17,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604726845] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:38:17,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:38:17,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 00:38:17,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937949750] [2023-02-16 00:38:17,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:38:17,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 00:38:17,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:38:17,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 00:38:17,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 00:38:17,915 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:17,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:38:17,931 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2023-02-16 00:38:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 00:38:17,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-16 00:38:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:38:17,939 INFO L225 Difference]: With dead ends: 56 [2023-02-16 00:38:17,939 INFO L226 Difference]: Without dead ends: 26 [2023-02-16 00:38:17,942 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 [2023-02-16 00:38:17,945 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2023-02-16 00:38:17,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:38:17,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-16 00:38:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-16 00:38:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2023-02-16 00:38:17,973 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2023-02-16 00:38:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:38:17,973 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2023-02-16 00:38:17,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2023-02-16 00:38:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 00:38:17,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:38:17,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:38:17,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 00:38:18,179 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 [2023-02-16 00:38:18,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:38:18,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:38:18,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1344199344, now seen corresponding path program 1 times [2023-02-16 00:38:18,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:38:18,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731401854] [2023-02-16 00:38:18,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:38:18,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:38:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:38:18,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:38:18,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731401854] [2023-02-16 00:38:18,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 00:38:18,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281983740] [2023-02-16 00:38:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:38:18,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:38:18,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:38:18,229 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) [2023-02-16 00:38:18,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:38:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:38:18,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 00:38:18,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:38:18,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:38:18,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:38:18,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281983740] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:38:18,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:38:18,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:38:18,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359141447] [2023-02-16 00:38:18,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:38:18,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:38:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:38:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:38:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:38:18,338 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:38:18,396 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2023-02-16 00:38:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:38:18,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-16 00:38:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:38:18,397 INFO L225 Difference]: With dead ends: 61 [2023-02-16 00:38:18,398 INFO L226 Difference]: Without dead ends: 42 [2023-02-16 00:38:18,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:38:18,399 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 52 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:38:18,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 18 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:38:18,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-16 00:38:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 31. [2023-02-16 00:38:18,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-02-16 00:38:18,407 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 18 [2023-02-16 00:38:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:38:18,407 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-02-16 00:38:18,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-02-16 00:38:18,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 00:38:18,408 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:38:18,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:38:18,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 00:38:18,616 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 [2023-02-16 00:38:18,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:38:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:38:18,617 INFO L85 PathProgramCache]: Analyzing trace with hash -933126362, now seen corresponding path program 1 times [2023-02-16 00:38:18,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:38:18,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116064702] [2023-02-16 00:38:18,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:38:18,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:38:18,684 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:38:18,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [482999500] [2023-02-16 00:38:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:38:18,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:38:18,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:38:18,691 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) [2023-02-16 00:38:18,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:38:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:38:18,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 57 conjunts are in the unsatisfiable core [2023-02-16 00:38:18,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:38:18,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 00:38:18,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 00:38:18,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-16 00:38:19,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2023-02-16 00:38:19,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2023-02-16 00:38:19,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2023-02-16 00:38:19,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2023-02-16 00:38:19,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 23 [2023-02-16 00:38:19,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 37 [2023-02-16 00:38:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:38:19,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:38:21,682 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:21,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:38:21,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:38:21,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116064702] [2023-02-16 00:38:21,750 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:38:21,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482999500] [2023-02-16 00:38:21,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482999500] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:38:21,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:38:21,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-02-16 00:38:21,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423699507] [2023-02-16 00:38:21,751 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:38:21,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-16 00:38:21,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:38:21,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-16 00:38:21,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2023-02-16 00:38:21,754 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 32 states, 32 states have (on average 1.65625) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:38:29,378 INFO L93 Difference]: Finished difference Result 80 states and 93 transitions. [2023-02-16 00:38:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-16 00:38:29,379 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.65625) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-16 00:38:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:38:29,382 INFO L225 Difference]: With dead ends: 80 [2023-02-16 00:38:29,382 INFO L226 Difference]: Without dead ends: 78 [2023-02-16 00:38:29,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=367, Invalid=2389, Unknown=0, NotChecked=0, Total=2756 [2023-02-16 00:38:29,389 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 103 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-16 00:38:29,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 176 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-16 00:38:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-16 00:38:29,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2023-02-16 00:38:29,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.2264150943396226) internal successors, (65), 53 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:29,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 65 transitions. [2023-02-16 00:38:29,416 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 65 transitions. Word has length 28 [2023-02-16 00:38:29,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:38:29,416 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 65 transitions. [2023-02-16 00:38:29,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.65625) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:29,419 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 65 transitions. [2023-02-16 00:38:29,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 00:38:29,420 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:38:29,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:38:29,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 00:38:29,625 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 [2023-02-16 00:38:29,626 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:38:29,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:38:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1642466588, now seen corresponding path program 2 times [2023-02-16 00:38:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:38:29,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772712742] [2023-02-16 00:38:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:38:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:38:29,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:38:29,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45712756] [2023-02-16 00:38:29,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 00:38:29,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:38:29,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:38:29,665 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) [2023-02-16 00:38:29,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:38:29,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 00:38:29,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:38:29,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:38:29,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:38:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:38:29,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:38:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:38:29,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:38:29,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772712742] [2023-02-16 00:38:29,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:38:29,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45712756] [2023-02-16 00:38:29,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45712756] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:38:29,832 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:38:29,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-16 00:38:29,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158524438] [2023-02-16 00:38:29,833 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:38:29,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:38:29,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:38:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:38:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:38:29,834 INFO L87 Difference]: Start difference. First operand 54 states and 65 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:38:30,012 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2023-02-16 00:38:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:38:30,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-16 00:38:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:38:30,013 INFO L225 Difference]: With dead ends: 126 [2023-02-16 00:38:30,013 INFO L226 Difference]: Without dead ends: 78 [2023-02-16 00:38:30,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-16 00:38:30,015 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 71 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:38:30,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 54 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:38:30,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-16 00:38:30,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 56. [2023-02-16 00:38:30,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:30,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2023-02-16 00:38:30,037 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 30 [2023-02-16 00:38:30,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:38:30,038 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2023-02-16 00:38:30,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:30,038 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2023-02-16 00:38:30,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 00:38:30,039 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:38:30,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:38:30,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 00:38:30,245 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 [2023-02-16 00:38:30,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:38:30,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:38:30,246 INFO L85 PathProgramCache]: Analyzing trace with hash -396360796, now seen corresponding path program 3 times [2023-02-16 00:38:30,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:38:30,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956292514] [2023-02-16 00:38:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:38:30,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:38:30,269 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:38:30,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686996021] [2023-02-16 00:38:30,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 00:38:30,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:38:30,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:38:30,271 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) [2023-02-16 00:38:30,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 00:38:30,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-16 00:38:30,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:38:30,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 00:38:30,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:38:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:38:30,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:38:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 00:38:30,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:38:30,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956292514] [2023-02-16 00:38:30,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:38:30,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686996021] [2023-02-16 00:38:30,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686996021] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:38:30,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:38:30,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-02-16 00:38:30,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103760224] [2023-02-16 00:38:30,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:38:30,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 00:38:30,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:38:30,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 00:38:30,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-02-16 00:38:30,470 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:30,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:38:30,611 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2023-02-16 00:38:30,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 00:38:30,612 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-16 00:38:30,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:38:30,613 INFO L225 Difference]: With dead ends: 74 [2023-02-16 00:38:30,613 INFO L226 Difference]: Without dead ends: 57 [2023-02-16 00:38:30,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-02-16 00:38:30,614 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 89 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:38:30,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 40 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:38:30,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-16 00:38:30,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2023-02-16 00:38:30,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.15) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2023-02-16 00:38:30,623 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 30 [2023-02-16 00:38:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:38:30,623 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2023-02-16 00:38:30,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:38:30,624 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2023-02-16 00:38:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 00:38:30,624 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:38:30,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:38:30,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 00:38:30,830 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 [2023-02-16 00:38:30,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:38:30,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:38:30,832 INFO L85 PathProgramCache]: Analyzing trace with hash 389318684, now seen corresponding path program 4 times [2023-02-16 00:38:30,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:38:30,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791099572] [2023-02-16 00:38:30,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:38:30,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:38:30,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 00:38:30,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [622291063] [2023-02-16 00:38:30,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 00:38:30,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:38:30,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:38:30,896 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) [2023-02-16 00:38:30,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 00:38:30,992 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 00:38:30,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 00:38:30,995 WARN L261 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 94 conjunts are in the unsatisfiable core [2023-02-16 00:38:31,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:38:31,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-02-16 00:38:31,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 00:38:31,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-16 00:38:31,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2023-02-16 00:38:31,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:31,331 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-02-16 00:38:31,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2023-02-16 00:38:31,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:31,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:31,447 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-02-16 00:38:31,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 60 [2023-02-16 00:38:31,756 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:31,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:31,759 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:31,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:31,762 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:31,780 INFO L321 Elim1Store]: treesize reduction 48, result has 22.6 percent of original size [2023-02-16 00:38:31,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 72 treesize of output 81 [2023-02-16 00:38:31,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:31,936 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:31,942 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2023-02-16 00:38:31,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 71 treesize of output 57 [2023-02-16 00:38:32,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:32,069 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 00:38:32,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 45 treesize of output 35 [2023-02-16 00:38:32,138 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:32,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:32,159 INFO L321 Elim1Store]: treesize reduction 59, result has 24.4 percent of original size [2023-02-16 00:38:32,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 46 [2023-02-16 00:38:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:32,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2023-02-16 00:38:32,458 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:32,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:32,492 INFO L321 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2023-02-16 00:38:32,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 59 treesize of output 53 [2023-02-16 00:38:32,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:32,623 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:32,626 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 00:38:32,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2023-02-16 00:38:32,855 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 00:38:32,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 41 [2023-02-16 00:38:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:38:32,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:38:46,819 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:46,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:46,821 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-16 00:38:46,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 00:38:46,830 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 00:38:46,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 1 [2023-02-16 00:38:46,832 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:38:46,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:38:46,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791099572] [2023-02-16 00:38:46,833 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 00:38:46,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622291063] [2023-02-16 00:38:46,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622291063] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:38:46,833 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 00:38:46,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 59 [2023-02-16 00:38:46,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20370045] [2023-02-16 00:38:46,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 00:38:46,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-02-16 00:38:46,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:38:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-02-16 00:38:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=3021, Unknown=0, NotChecked=0, Total=3422 [2023-02-16 00:38:46,837 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 59 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 59 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:39:24,205 WARN L233 SmtUtils]: Spent 23.01s on a formula simplification that was a NOOP. DAG size: 192 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:39:27,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:39:30,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:39:32,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:39:34,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:39:36,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:39:38,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:39:40,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:39:44,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:39:46,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-02-16 00:39:48,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-02-16 00:40:00,754 WARN L233 SmtUtils]: Spent 7.80s on a formula simplification. DAG size of input: 141 DAG size of output: 140 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:40:12,267 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (* |c_ULTIMATE.start_main_~i~0#1| 8))) (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse0 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse43 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1))) (let ((.cse12 (select .cse0 .cse43)) (.cse20 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse42 (+ .cse12 .cse20))) (let ((.cse17 (store .cse0 .cse43 .cse42)) (.cse29 (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse42))) (.cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 8))) (let ((.cse19 (select .cse0 .cse18)) (.cse24 (select .cse29 |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse17))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse22 (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (.cse21 (select .cse24 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse37 (+ .cse20 (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|))) (.cse7 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse31 (+ .cse20 .cse19)) (.cse8 (+ (* 2 c_~N~0) (* c_~N~0 c_~N~0) 1)) (.cse2 (< 2 c_~N~0))) (and (= (select .cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse1 (- 8))) 1) (or .cse2 (= (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse3)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse6))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) .cse6))) .cse8)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= 0 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (or (= (let ((.cse11 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse9 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse11)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ .cse9 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) .cse11))) .cse8) .cse2) (= .cse12 1) (or (= (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse17 .cse18 (+ .cse19 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (let ((.cse14 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse16 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse15 (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse16)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ (select (select (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) .cse15 .cse16))))) .cse8) .cse2) (or .cse2 (= (+ .cse20 .cse12 .cse21) .cse8)) (not (= |c_ULTIMATE.start_main_~a~0#1.base| |c_ULTIMATE.start_main_~#sum~0#1.base|)) .cse22 (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (or .cse2 (= (let ((.cse23 (select .cse24 .cse18))) (+ .cse20 .cse12 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse20 .cse23))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) .cse23)) .cse8)) (or (not .cse22) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) c_~N~0) .cse2 (= (let ((.cse27 (store .cse29 |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse30 (store .cse24 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse12 .cse20 .cse21)))) (store .cse30 .cse7 (+ (select (select (store .cse29 |c_ULTIMATE.start_main_~a~0#1.base| .cse30) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select .cse24 .cse7))))))) (let ((.cse28 (select .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse25 (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse26 (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse25)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ .cse25 .cse26 (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse25 .cse26))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) .cse8)) (or .cse2 (= (+ .cse20 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse31)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) .cse19) .cse8)) (or .cse2 (= (let ((.cse33 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse36 (store .cse0 |c_ULTIMATE.start_main_~a~0#1.offset| .cse37))) (store .cse36 .cse7 (+ (select .cse0 .cse7) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse36) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse34 (select .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse32 (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse35 (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse32)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ .cse32 (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse34 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse32 .cse35))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|) .cse35))))) .cse8)) (or .cse2 (= .cse37 .cse8)) (or (= (let ((.cse40 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store .cse0 .cse18 .cse31)))) (let ((.cse41 (select .cse40 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse39 (select (select (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse41 |c_ULTIMATE.start_main_~#sum~0#1.offset| 0)) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse38 (select (select (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse41 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse39)) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (+ .cse38 .cse39 (select (select (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse41 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse38 .cse39))) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) .cse8) .cse2) (= .cse20 0))))))))) is different from true [2023-02-16 00:40:44,766 WARN L233 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 274 DAG size of output: 50 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 00:41:12,182 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification. DAG size of input: 277 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)