./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-fpi/s2lif.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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/s2lif.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 b94168e93e7008f2fa8921a5a8a54bdf1fdce85df40220d4719fdc5076df164f --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 08:52:14,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 08:52:14,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 08:52:14,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 08:52:14,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 08:52:14,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 08:52:14,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 08:52:14,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 08:52:14,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 08:52:14,135 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 08:52:14,136 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 08:52:14,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 08:52:14,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 08:52:14,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 08:52:14,140 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 08:52:14,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 08:52:14,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 08:52:14,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 08:52:14,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 08:52:14,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 08:52:14,148 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 08:52:14,149 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 08:52:14,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 08:52:14,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 08:52:14,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 08:52:14,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 08:52:14,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 08:52:14,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 08:52:14,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 08:52:14,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 08:52:14,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 08:52:14,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 08:52:14,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 08:52:14,161 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 08:52:14,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 08:52:14,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 08:52:14,163 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 08:52:14,163 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 08:52:14,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 08:52:14,164 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 08:52:14,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 08:52:14,165 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 08:52:14,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 08:52:14,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 08:52:14,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 08:52:14,190 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 08:52:14,191 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 08:52:14,191 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 08:52:14,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 08:52:14,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 08:52:14,192 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 08:52:14,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 08:52:14,193 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 08:52:14,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 08:52:14,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 08:52:14,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 08:52:14,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 08:52:14,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 08:52:14,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 08:52:14,194 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 08:52:14,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 08:52:14,194 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 08:52:14,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 08:52:14,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 08:52:14,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 08:52:14,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 08:52:14,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:52:14,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 08:52:14,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 08:52:14,195 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 08:52:14,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 08:52:14,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 08:52:14,195 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 08:52:14,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 08:52:14,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 08:52:14,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 08:52:14,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b94168e93e7008f2fa8921a5a8a54bdf1fdce85df40220d4719fdc5076df164f [2021-12-15 08:52:14,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 08:52:14,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 08:52:14,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 08:52:14,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 08:52:14,371 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 08:52:14,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/s2lif.c [2021-12-15 08:52:14,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94cab028/4e0c8c1c75754cad93b5fd26f5f8cd44/FLAG4fa854e52 [2021-12-15 08:52:14,750 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 08:52:14,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2lif.c [2021-12-15 08:52:14,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94cab028/4e0c8c1c75754cad93b5fd26f5f8cd44/FLAG4fa854e52 [2021-12-15 08:52:14,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94cab028/4e0c8c1c75754cad93b5fd26f5f8cd44 [2021-12-15 08:52:14,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 08:52:14,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 08:52:14,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 08:52:14,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 08:52:14,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 08:52:14,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:14,770 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ceb09bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14, skipping insertion in model container [2021-12-15 08:52:14,770 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:14,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 08:52:14,782 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 08:52:14,903 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2lif.c[588,601] [2021-12-15 08:52:14,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:52:14,933 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 08:52:14,944 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/s2lif.c[588,601] [2021-12-15 08:52:14,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:52:14,959 INFO L208 MainTranslator]: Completed translation [2021-12-15 08:52:14,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14 WrapperNode [2021-12-15 08:52:14,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 08:52:14,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 08:52:14,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 08:52:14,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 08:52:14,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:14,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:14,989 INFO L137 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2021-12-15 08:52:14,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 08:52:14,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 08:52:14,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 08:52:14,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 08:52:14,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:14,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:15,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:15,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:15,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:15,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:15,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:15,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 08:52:15,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 08:52:15,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 08:52:15,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 08:52:15,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (1/1) ... [2021-12-15 08:52:15,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:52:15,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:15,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 08:52:15,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 08:52:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 08:52:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 08:52:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 08:52:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 08:52:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-15 08:52:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 08:52:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 08:52:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 08:52:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 08:52:15,129 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 08:52:15,130 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 08:52:15,228 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 08:52:15,232 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 08:52:15,232 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-15 08:52:15,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:52:15 BoogieIcfgContainer [2021-12-15 08:52:15,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 08:52:15,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 08:52:15,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 08:52:15,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 08:52:15,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:52:14" (1/3) ... [2021-12-15 08:52:15,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c59e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:52:15, skipping insertion in model container [2021-12-15 08:52:15,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:52:14" (2/3) ... [2021-12-15 08:52:15,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c59e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:52:15, skipping insertion in model container [2021-12-15 08:52:15,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:52:15" (3/3) ... [2021-12-15 08:52:15,239 INFO L111 eAbstractionObserver]: Analyzing ICFG s2lif.c [2021-12-15 08:52:15,243 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 08:52:15,243 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 08:52:15,273 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 08:52:15,278 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 08:52:15,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 08:52:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 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) [2021-12-15 08:52:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 08:52:15,290 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:15,291 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:15,291 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:15,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash -845640729, now seen corresponding path program 1 times [2021-12-15 08:52:15,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:15,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263332762] [2021-12-15 08:52:15,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:15,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:15,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:52:15,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:15,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263332762] [2021-12-15 08:52:15,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263332762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:52:15,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:52:15,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 08:52:15,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110704442] [2021-12-15 08:52:15,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:52:15,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 08:52:15,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 08:52:15,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 08:52:15,440 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 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) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-12-15 08:52:15,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:15,451 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2021-12-15 08:52:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 08:52:15,453 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-12-15 08:52:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:15,458 INFO L225 Difference]: With dead ends: 40 [2021-12-15 08:52:15,458 INFO L226 Difference]: Without dead ends: 18 [2021-12-15 08:52:15,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 08:52:15,464 INFO L933 BasicCegarLoop]: 26 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, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:15,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:52:15,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-15 08:52:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-15 08:52:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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) [2021-12-15 08:52:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-12-15 08:52:15,495 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2021-12-15 08:52:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:15,495 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-15 08:52:15,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-12-15 08:52:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-12-15 08:52:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-15 08:52:15,496 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:15,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:15,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 08:52:15,497 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:15,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1238667739, now seen corresponding path program 1 times [2021-12-15 08:52:15,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:15,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773528955] [2021-12-15 08:52:15,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:15,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:52:15,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:15,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773528955] [2021-12-15 08:52:15,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773528955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:52:15,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:52:15,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 08:52:15,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106887823] [2021-12-15 08:52:15,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:52:15,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 08:52:15,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 08:52:15,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 08:52:15,614 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-15 08:52:15,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:15,670 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-12-15 08:52:15,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 08:52:15,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-12-15 08:52:15,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:15,672 INFO L225 Difference]: With dead ends: 36 [2021-12-15 08:52:15,672 INFO L226 Difference]: Without dead ends: 25 [2021-12-15 08:52:15,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-15 08:52:15,676 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:15,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:52:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-15 08:52:15,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2021-12-15 08:52:15,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2021-12-15 08:52:15,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-15 08:52:15,685 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2021-12-15 08:52:15,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:15,687 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-15 08:52:15,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-15 08:52:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-15 08:52:15,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 08:52:15,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:15,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:15,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 08:52:15,691 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:15,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2001188913, now seen corresponding path program 1 times [2021-12-15 08:52:15,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:15,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399961401] [2021-12-15 08:52:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:15,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:52:16,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:16,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399961401] [2021-12-15 08:52:16,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399961401] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:52:16,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217228565] [2021-12-15 08:52:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:16,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:16,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:16,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:52:16,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 08:52:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:16,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 34 conjunts are in the unsatisfiable core [2021-12-15 08:52:16,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:52:16,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 08:52:16,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:16,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:52:16,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:16,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-15 08:52:16,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:16,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-15 08:52:16,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:16,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 47 treesize of output 27 [2021-12-15 08:52:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:52:16,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:52:17,009 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 08:52:17,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 44 [2021-12-15 08:52:17,102 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-15 08:52:17,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 49 treesize of output 42 [2021-12-15 08:52:17,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:17,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 36 treesize of output 24 [2021-12-15 08:52:17,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 16 [2021-12-15 08:52:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:52:17,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217228565] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:52:17,126 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:52:17,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 30 [2021-12-15 08:52:17,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690481051] [2021-12-15 08:52:17,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:52:17,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-15 08:52:17,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:17,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-15 08:52:17,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2021-12-15 08:52:17,129 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 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) [2021-12-15 08:52:17,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:17,405 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2021-12-15 08:52:17,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-15 08:52:17,406 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 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 20 [2021-12-15 08:52:17,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:17,407 INFO L225 Difference]: With dead ends: 44 [2021-12-15 08:52:17,407 INFO L226 Difference]: Without dead ends: 39 [2021-12-15 08:52:17,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2021-12-15 08:52:17,408 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:17,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 55 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 95 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2021-12-15 08:52:17,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-15 08:52:17,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2021-12-15 08:52:17,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 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) [2021-12-15 08:52:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-12-15 08:52:17,420 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2021-12-15 08:52:17,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:17,420 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-12-15 08:52:17,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 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) [2021-12-15 08:52:17,420 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-12-15 08:52:17,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 08:52:17,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:17,421 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:17,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-15 08:52:17,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:17,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:17,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:17,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1608161903, now seen corresponding path program 1 times [2021-12-15 08:52:17,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:17,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029769518] [2021-12-15 08:52:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:17,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:17,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:52:17,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:17,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029769518] [2021-12-15 08:52:17,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029769518] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:52:17,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36749996] [2021-12-15 08:52:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:17,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:17,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:17,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:52:17,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 08:52:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:17,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-15 08:52:17,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:52:17,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-12-15 08:52:17,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-12-15 08:52:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:52:17,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:52:17,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 12 [2021-12-15 08:52:17,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 20 [2021-12-15 08:52:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:52:17,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36749996] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:52:17,904 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:52:17,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-12-15 08:52:17,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067505358] [2021-12-15 08:52:17,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:52:17,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-15 08:52:17,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:17,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-15 08:52:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-15 08:52:17,907 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-12-15 08:52:17,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:17,975 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2021-12-15 08:52:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 08:52:17,975 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 20 [2021-12-15 08:52:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:17,976 INFO L225 Difference]: With dead ends: 49 [2021-12-15 08:52:17,976 INFO L226 Difference]: Without dead ends: 38 [2021-12-15 08:52:17,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-12-15 08:52:17,977 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:17,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 66 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:52:17,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-15 08:52:17,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-12-15 08:52:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 34 states have internal predecessors, (42), 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) [2021-12-15 08:52:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-12-15 08:52:17,980 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2021-12-15 08:52:17,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:17,980 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-12-15 08:52:17,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-12-15 08:52:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-12-15 08:52:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 08:52:17,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:17,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:17,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 08:52:18,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-15 08:52:18,197 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:18,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:18,197 INFO L85 PathProgramCache]: Analyzing trace with hash -949569453, now seen corresponding path program 2 times [2021-12-15 08:52:18,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:18,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983412533] [2021-12-15 08:52:18,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:18,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:52:18,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:18,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983412533] [2021-12-15 08:52:18,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983412533] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:52:18,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439576518] [2021-12-15 08:52:18,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 08:52:18,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:18,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:18,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:52:18,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 08:52:18,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 08:52:18,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:52:18,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 08:52:18,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:52:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:52:18,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:52:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:52:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439576518] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:52:18,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:52:18,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-15 08:52:18,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431743037] [2021-12-15 08:52:18,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:52:18,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-15 08:52:18,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-15 08:52:18,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-15 08:52:18,384 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-12-15 08:52:18,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:18,466 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2021-12-15 08:52:18,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 08:52:18,466 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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 22 [2021-12-15 08:52:18,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:18,468 INFO L225 Difference]: With dead ends: 70 [2021-12-15 08:52:18,468 INFO L226 Difference]: Without dead ends: 44 [2021-12-15 08:52:18,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-15 08:52:18,474 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 58 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:18,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 31 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:52:18,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-15 08:52:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2021-12-15 08:52:18,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 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) [2021-12-15 08:52:18,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-12-15 08:52:18,485 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2021-12-15 08:52:18,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:18,486 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-12-15 08:52:18,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 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) [2021-12-15 08:52:18,486 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-12-15 08:52:18,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 08:52:18,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:18,487 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:18,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 08:52:18,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:18,703 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:18,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:18,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2105967953, now seen corresponding path program 3 times [2021-12-15 08:52:18,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:18,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399022083] [2021-12-15 08:52:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:18,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:18,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:52:18,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:18,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399022083] [2021-12-15 08:52:18,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399022083] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:52:18,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277664148] [2021-12-15 08:52:18,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 08:52:18,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:18,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:18,747 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:52:18,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 08:52:18,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-15 08:52:18,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:52:18,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 08:52:18,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:52:18,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:52:18,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:52:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:52:18,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277664148] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:52:18,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:52:18,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-15 08:52:18,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484891515] [2021-12-15 08:52:18,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:52:18,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-15 08:52:18,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-15 08:52:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-15 08:52:18,890 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-12-15 08:52:18,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:18,962 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-12-15 08:52:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 08:52:18,963 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 22 [2021-12-15 08:52:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:18,963 INFO L225 Difference]: With dead ends: 39 [2021-12-15 08:52:18,963 INFO L226 Difference]: Without dead ends: 31 [2021-12-15 08:52:18,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-15 08:52:18,964 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:18,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 21 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:52:18,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-15 08:52:18,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-12-15 08:52:18,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 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) [2021-12-15 08:52:18,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-12-15 08:52:18,967 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 22 [2021-12-15 08:52:18,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:18,967 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-12-15 08:52:18,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-12-15 08:52:18,967 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-12-15 08:52:18,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 08:52:18,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:18,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:18,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 08:52:19,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:19,184 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:19,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1032594067, now seen corresponding path program 4 times [2021-12-15 08:52:19,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:19,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115937910] [2021-12-15 08:52:19,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:19,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:52:19,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:19,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115937910] [2021-12-15 08:52:19,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115937910] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:52:19,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999624615] [2021-12-15 08:52:19,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-15 08:52:19,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:19,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:19,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:52:19,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 08:52:19,778 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-15 08:52:19,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:52:19,779 WARN L261 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-15 08:52:19,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:52:19,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 08:52:19,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:19,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:52:19,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:19,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:52:20,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:20,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 27 [2021-12-15 08:52:20,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:20,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:20,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 35 [2021-12-15 08:52:20,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:20,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:20,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:20,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-12-15 08:52:20,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:20,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 47 treesize of output 33 [2021-12-15 08:52:20,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:20,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 60 treesize of output 32 [2021-12-15 08:52:20,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:52:20,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:52:21,424 INFO L354 Elim1Store]: treesize reduction 52, result has 41.6 percent of original size [2021-12-15 08:52:21,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 1074 treesize of output 518 [2021-12-15 08:52:21,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:21,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-12-15 08:52:22,063 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_4 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= 3 (select v_arrayElimArr_4 .cse0))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse2 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (and (<= (div (+ (* .cse1 (- 1)) (* .cse2 (- 1)) (- 3)) (- 3)) .cse3) (<= .cse3 (div (+ .cse1 .cse2 3) 3))))))) (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 3))))) is different from false [2021-12-15 08:52:22,106 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_4 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= 3 (select v_arrayElimArr_4 .cse0))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| 2))) (and (<= .cse1 (div (+ .cse2 .cse3 3) 3)) (<= (div (+ (* .cse2 (- 1)) (* .cse3 (- 1)) (- 3)) (- 3)) .cse1)))))) (not (= (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|) 3))))) is different from false [2021-12-15 08:52:22,165 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-15 08:52:22,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999624615] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:52:22,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:52:22,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 50 [2021-12-15 08:52:22,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549657018] [2021-12-15 08:52:22,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:52:22,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-15 08:52:22,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:22,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-15 08:52:22,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1942, Unknown=2, NotChecked=186, Total=2450 [2021-12-15 08:52:22,167 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 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) [2021-12-15 08:52:30,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:30,017 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2021-12-15 08:52:30,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-15 08:52:30,018 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 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 27 [2021-12-15 08:52:30,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:30,019 INFO L225 Difference]: With dead ends: 77 [2021-12-15 08:52:30,019 INFO L226 Difference]: Without dead ends: 72 [2021-12-15 08:52:30,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 72 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=791, Invalid=4326, Unknown=3, NotChecked=282, Total=5402 [2021-12-15 08:52:30,023 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:30,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 115 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 703 Invalid, 0 Unknown, 94 Unchecked, 1.2s Time] [2021-12-15 08:52:30,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-15 08:52:30,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 44. [2021-12-15 08:52:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 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) [2021-12-15 08:52:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2021-12-15 08:52:30,036 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 27 [2021-12-15 08:52:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:30,036 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2021-12-15 08:52:30,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 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) [2021-12-15 08:52:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2021-12-15 08:52:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 08:52:30,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:30,037 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:30,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 08:52:30,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:30,247 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:30,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash -774428629, now seen corresponding path program 1 times [2021-12-15 08:52:30,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:30,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650668451] [2021-12-15 08:52:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:30,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 08:52:30,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:30,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650668451] [2021-12-15 08:52:30,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650668451] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:52:30,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055413628] [2021-12-15 08:52:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:30,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:30,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:30,514 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:52:30,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 08:52:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:30,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-15 08:52:30,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:52:30,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-15 08:52:30,687 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-15 08:52:30,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-15 08:52:30,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2021-12-15 08:52:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 08:52:30,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:52:30,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 14 [2021-12-15 08:52:30,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 24 [2021-12-15 08:52:30,986 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-15 08:52:30,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055413628] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:52:30,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:52:30,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2021-12-15 08:52:30,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343644310] [2021-12-15 08:52:30,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:52:30,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-15 08:52:30,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:30,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-15 08:52:30,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-12-15 08:52:30,988 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) [2021-12-15 08:52:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:31,584 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2021-12-15 08:52:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-15 08:52:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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 27 [2021-12-15 08:52:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:31,585 INFO L225 Difference]: With dead ends: 63 [2021-12-15 08:52:31,585 INFO L226 Difference]: Without dead ends: 50 [2021-12-15 08:52:31,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2021-12-15 08:52:31,586 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:31,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 67 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-15 08:52:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-15 08:52:31,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-12-15 08:52:31,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 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) [2021-12-15 08:52:31,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2021-12-15 08:52:31,590 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 27 [2021-12-15 08:52:31,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:31,590 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2021-12-15 08:52:31,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 18 states have internal predecessors, (42), 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) [2021-12-15 08:52:31,591 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2021-12-15 08:52:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-15 08:52:31,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:31,591 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:31,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 08:52:31,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:31,799 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:31,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash -132219249, now seen corresponding path program 5 times [2021-12-15 08:52:31,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:31,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804942742] [2021-12-15 08:52:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:31,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:31,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 08:52:31,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:31,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804942742] [2021-12-15 08:52:31,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804942742] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:52:31,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261989346] [2021-12-15 08:52:31,915 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-15 08:52:31,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:31,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:31,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:52:31,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 08:52:31,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-15 08:52:31,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:52:31,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 08:52:31,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:52:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 08:52:32,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:52:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-15 08:52:32,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261989346] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:52:32,241 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:52:32,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-15 08:52:32,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438759532] [2021-12-15 08:52:32,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:52:32,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-15 08:52:32,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:32,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-15 08:52:32,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-15 08:52:32,242 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-12-15 08:52:32,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:32,495 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2021-12-15 08:52:32,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 08:52:32,496 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 29 [2021-12-15 08:52:32,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:32,496 INFO L225 Difference]: With dead ends: 77 [2021-12-15 08:52:32,496 INFO L226 Difference]: Without dead ends: 43 [2021-12-15 08:52:32,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-15 08:52:32,497 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 65 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:32,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 28 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 08:52:32,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-15 08:52:32,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2021-12-15 08:52:32,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 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) [2021-12-15 08:52:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-12-15 08:52:32,500 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 29 [2021-12-15 08:52:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:32,500 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-12-15 08:52:32,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-12-15 08:52:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-12-15 08:52:32,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-15 08:52:32,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:32,501 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:32,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 08:52:32,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:32,701 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -863925553, now seen corresponding path program 6 times [2021-12-15 08:52:32,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:32,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011928826] [2021-12-15 08:52:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:32,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-15 08:52:32,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:32,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011928826] [2021-12-15 08:52:32,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011928826] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:52:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805759146] [2021-12-15 08:52:32,819 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-15 08:52:32,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:32,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:32,820 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:52:32,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 08:52:32,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-15 08:52:32,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:52:32,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-15 08:52:32,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:52:33,022 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:52:33,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:52:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:52:33,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805759146] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:52:33,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:52:33,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-15 08:52:33,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720940547] [2021-12-15 08:52:33,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:52:33,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-15 08:52:33,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-15 08:52:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-15 08:52:33,110 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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) [2021-12-15 08:52:33,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:52:33,354 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-15 08:52:33,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 08:52:33,354 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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 32 [2021-12-15 08:52:33,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:52:33,355 INFO L225 Difference]: With dead ends: 42 [2021-12-15 08:52:33,355 INFO L226 Difference]: Without dead ends: 38 [2021-12-15 08:52:33,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-12-15 08:52:33,356 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 65 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 08:52:33,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 21 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 08:52:33,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-15 08:52:33,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-12-15 08:52:33,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 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) [2021-12-15 08:52:33,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-12-15 08:52:33,359 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 32 [2021-12-15 08:52:33,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:52:33,359 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-12-15 08:52:33,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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) [2021-12-15 08:52:33,359 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-12-15 08:52:33,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 08:52:33,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:52:33,362 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:52:33,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-15 08:52:33,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-15 08:52:33,565 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:52:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:52:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1250534543, now seen corresponding path program 7 times [2021-12-15 08:52:33,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:52:33,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280819835] [2021-12-15 08:52:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:52:33,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:52:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:52:35,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:52:35,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280819835] [2021-12-15 08:52:35,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280819835] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:52:35,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118369410] [2021-12-15 08:52:35,501 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-15 08:52:35,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:52:35,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:52:35,502 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:52:35,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 08:52:35,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:52:35,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 75 conjunts are in the unsatisfiable core [2021-12-15 08:52:35,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:52:35,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-15 08:52:35,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-12-15 08:52:35,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:52:35,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:52:35,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:52:36,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 27 [2021-12-15 08:52:36,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:36,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 [2021-12-15 08:52:36,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:36,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:36,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:36,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 47 [2021-12-15 08:52:37,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:37,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:37,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:37,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:37,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2021-12-15 08:52:37,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:37,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:37,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:37,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:37,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:52:37,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 49 [2021-12-15 08:52:37,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 43 [2021-12-15 08:52:37,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 33 [2021-12-15 08:52:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:52:38,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:52:42,218 INFO L354 Elim1Store]: treesize reduction 476, result has 26.2 percent of original size [2021-12-15 08:52:42,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 39 case distinctions, treesize of input 36240 treesize of output 11096 [2021-12-15 08:52:42,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-12-15 08:52:42,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 31 [2021-12-15 08:52:42,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2021-12-15 08:52:42,700 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 211 [2021-12-15 08:52:42,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 59 [2021-12-15 08:52:42,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:52:42,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 300 treesize of output 246 [2021-12-15 08:52:43,150 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_6 (Array Int Int)) (~N~0 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse3 (select v_arrayElimArr_6 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (or (not (= 3 (select v_arrayElimArr_6 .cse0))) (let ((.cse2 (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_6))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (+ .cse3 .cse4 .cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))))))) (.cse1 (* 3 ~N~0))) (and (<= .cse1 .cse2) (<= .cse2 .cse1))) (<= ~N~0 |c_ULTIMATE.start_main_~i~0#1|) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) ~N~0) (not (= 3 .cse3)) (not (= 3 (select v_arrayElimArr_6 .cse8)))))) is different from false [2021-12-15 08:52:43,486 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_6 (Array Int Int)) (~N~0 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse3 (select v_arrayElimArr_6 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (or (not (= 3 (select v_arrayElimArr_6 .cse0))) (let ((.cse2 (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_6))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (+ .cse3 .cse4 .cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))))))) (.cse1 (* 3 ~N~0))) (and (<= .cse1 .cse2) (<= .cse2 .cse1))) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (< (+ |c_ULTIMATE.start_main_~i~0#1| 2) ~N~0) (not (= 3 .cse3)) (not (= 3 (select v_arrayElimArr_6 .cse8)))))) is different from false [2021-12-15 08:52:44,141 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_6 (Array Int Int)) (~N~0 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (.cse3 (select v_arrayElimArr_6 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (or (not (= 3 (select v_arrayElimArr_6 .cse0))) (let ((.cse2 (let ((.cse6 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_6))) (let ((.cse7 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse5 (select .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse4 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (+ .cse3 .cse4 .cse5 (select (select (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse7 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))))))) (.cse1 (* 3 ~N~0))) (and (<= .cse1 .cse2) (<= .cse2 .cse1))) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 2)) (< (+ |c_ULTIMATE.start_main_~i~0#1| 3) ~N~0) (not (= 3 .cse3)) (not (= 3 (select v_arrayElimArr_6 .cse8)))))) is different from false [2021-12-15 08:52:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-12-15 08:52:44,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118369410] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:52:44,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:52:44,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 66 [2021-12-15 08:52:44,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843190176] [2021-12-15 08:52:44,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:52:44,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-15 08:52:44,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:52:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-15 08:52:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=3452, Unknown=3, NotChecked=372, Total=4290 [2021-12-15 08:52:44,457 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 66 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 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) [2021-12-15 08:53:01,159 WARN L227 SmtUtils]: Spent 5.04s on a formula simplification. DAG size of input: 158 DAG size of output: 142 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-15 08:53:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:17,839 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2021-12-15 08:53:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-15 08:53:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 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 34 [2021-12-15 08:53:17,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:17,840 INFO L225 Difference]: With dead ends: 98 [2021-12-15 08:53:17,840 INFO L226 Difference]: Without dead ends: 80 [2021-12-15 08:53:17,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 26 SyntacticMatches, 7 SemanticMatches, 103 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3249 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=1313, Invalid=8998, Unknown=3, NotChecked=606, Total=10920 [2021-12-15 08:53:17,843 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 86 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:17,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 131 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 987 Invalid, 0 Unknown, 186 Unchecked, 2.4s Time] [2021-12-15 08:53:17,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-12-15 08:53:17,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 55. [2021-12-15 08:53:17,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 54 states have internal predecessors, (63), 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) [2021-12-15 08:53:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-12-15 08:53:17,848 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 34 [2021-12-15 08:53:17,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:17,848 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-12-15 08:53:17,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 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) [2021-12-15 08:53:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-12-15 08:53:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-15 08:53:17,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:17,849 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:17,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:18,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:18,049 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:18,050 INFO L85 PathProgramCache]: Analyzing trace with hash 2033315503, now seen corresponding path program 2 times [2021-12-15 08:53:18,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:18,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838100345] [2021-12-15 08:53:18,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:18,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:53:18,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:18,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838100345] [2021-12-15 08:53:18,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838100345] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:18,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288138897] [2021-12-15 08:53:18,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 08:53:18,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:18,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:18,305 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:18,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-15 08:53:18,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 08:53:18,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:53:18,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-15 08:53:18,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:18,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-15 08:53:18,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:18,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 24 [2021-12-15 08:53:18,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:18,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 24 [2021-12-15 08:53:18,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-12-15 08:53:18,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:53:18,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:18,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 14 [2021-12-15 08:53:19,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 24 [2021-12-15 08:53:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-15 08:53:19,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288138897] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:19,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:19,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 19 [2021-12-15 08:53:19,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881329333] [2021-12-15 08:53:19,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:19,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-15 08:53:19,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-15 08:53:19,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-12-15 08:53:19,047 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2021-12-15 08:53:19,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:19,459 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2021-12-15 08:53:19,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-15 08:53:19,460 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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 34 [2021-12-15 08:53:19,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:19,460 INFO L225 Difference]: With dead ends: 76 [2021-12-15 08:53:19,460 INFO L226 Difference]: Without dead ends: 61 [2021-12-15 08:53:19,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-12-15 08:53:19,461 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:19,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 69 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 08:53:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-12-15 08:53:19,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2021-12-15 08:53:19,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 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) [2021-12-15 08:53:19,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2021-12-15 08:53:19,467 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 34 [2021-12-15 08:53:19,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:19,467 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2021-12-15 08:53:19,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2021-12-15 08:53:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2021-12-15 08:53:19,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-15 08:53:19,468 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:19,468 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:19,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:19,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-15 08:53:19,668 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:19,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash 880380819, now seen corresponding path program 8 times [2021-12-15 08:53:19,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:19,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600058999] [2021-12-15 08:53:19,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:19,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-15 08:53:19,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:19,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600058999] [2021-12-15 08:53:19,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600058999] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:19,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707335888] [2021-12-15 08:53:19,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 08:53:19,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:19,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:19,827 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:19,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-15 08:53:19,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 08:53:19,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:53:19,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 08:53:19,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:20,134 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-15 08:53:20,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-15 08:53:20,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707335888] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:20,265 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:20,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-15 08:53:20,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512509512] [2021-12-15 08:53:20,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:20,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-15 08:53:20,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:20,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-15 08:53:20,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-15 08:53:20,266 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 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) [2021-12-15 08:53:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:20,644 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2021-12-15 08:53:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-15 08:53:20,645 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 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) Word has length 36 [2021-12-15 08:53:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:20,645 INFO L225 Difference]: With dead ends: 86 [2021-12-15 08:53:20,645 INFO L226 Difference]: Without dead ends: 50 [2021-12-15 08:53:20,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-12-15 08:53:20,646 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 76 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:20,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 37 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 08:53:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-15 08:53:20,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2021-12-15 08:53:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 39 states have internal predecessors, (43), 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) [2021-12-15 08:53:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2021-12-15 08:53:20,649 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 36 [2021-12-15 08:53:20,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:20,649 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2021-12-15 08:53:20,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 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) [2021-12-15 08:53:20,649 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2021-12-15 08:53:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-15 08:53:20,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:20,650 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:20,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:20,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-15 08:53:20,850 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:20,850 INFO L85 PathProgramCache]: Analyzing trace with hash 975408915, now seen corresponding path program 9 times [2021-12-15 08:53:20,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:20,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754770975] [2021-12-15 08:53:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:20,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:21,039 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-15 08:53:21,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:21,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754770975] [2021-12-15 08:53:21,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754770975] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:21,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615049523] [2021-12-15 08:53:21,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 08:53:21,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:21,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:21,040 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:21,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-15 08:53:21,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-15 08:53:21,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:53:21,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 08:53:21,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 08:53:21,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:53:21,476 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-15 08:53:21,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615049523] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:53:21,477 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:53:21,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-15 08:53:21,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157373268] [2021-12-15 08:53:21,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:53:21,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-15 08:53:21,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:53:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-15 08:53:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-15 08:53:21,478 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 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) [2021-12-15 08:53:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:53:21,830 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-12-15 08:53:21,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-15 08:53:21,830 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 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 39 [2021-12-15 08:53:21,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:53:21,831 INFO L225 Difference]: With dead ends: 49 [2021-12-15 08:53:21,831 INFO L226 Difference]: Without dead ends: 45 [2021-12-15 08:53:21,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-12-15 08:53:21,831 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 08:53:21,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 30 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 08:53:21,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-15 08:53:21,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-12-15 08:53:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 states have internal predecessors, (45), 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) [2021-12-15 08:53:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-12-15 08:53:21,845 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 39 [2021-12-15 08:53:21,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:53:21,845 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-12-15 08:53:21,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 states have internal predecessors, (56), 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) [2021-12-15 08:53:21,845 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-12-15 08:53:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-15 08:53:21,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:53:21,846 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:53:21,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-15 08:53:22,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-15 08:53:22,054 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:53:22,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:53:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1118330549, now seen corresponding path program 10 times [2021-12-15 08:53:22,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:53:22,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974231781] [2021-12-15 08:53:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:53:22,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:53:22,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:53:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:53:24,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:53:24,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974231781] [2021-12-15 08:53:24,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974231781] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:53:24,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466857405] [2021-12-15 08:53:24,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-15 08:53:24,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:53:24,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:53:24,948 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:53:24,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-15 08:53:25,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-15 08:53:25,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:53:25,009 WARN L261 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 92 conjunts are in the unsatisfiable core [2021-12-15 08:53:25,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:53:25,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 08:53:25,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:25,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:53:25,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:25,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:53:25,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:25,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:53:25,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:25,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 treesize of output 16 [2021-12-15 08:53:25,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:25,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 44 treesize of output 27 [2021-12-15 08:53:26,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:26,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:26,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 [2021-12-15 08:53:26,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:26,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:26,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:26,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:26,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 52 [2021-12-15 08:53:27,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-12-15 08:53:27,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:27,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:27,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2021-12-15 08:53:28,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:28,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 61 [2021-12-15 08:53:28,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-15 08:53:28,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-15 08:53:28,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 63