./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/heap-data/shared_mem1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/heap-data/shared_mem1.i -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 47cb7cab177485da5df0f1af4a3f61fd7eb970990493dd3ac764f888774cbf0f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 09:15:44,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 09:15:44,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 09:15:44,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 09:15:44,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 09:15:44,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 09:15:44,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 09:15:44,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 09:15:44,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 09:15:44,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 09:15:44,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 09:15:44,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 09:15:44,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 09:15:44,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 09:15:44,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 09:15:44,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 09:15:44,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 09:15:44,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 09:15:44,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 09:15:44,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 09:15:44,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 09:15:44,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 09:15:44,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 09:15:44,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 09:15:44,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 09:15:44,532 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 09:15:44,532 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 09:15:44,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 09:15:44,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 09:15:44,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 09:15:44,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 09:15:44,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 09:15:44,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 09:15:44,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 09:15:44,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 09:15:44,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 09:15:44,536 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 09:15:44,536 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 09:15:44,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 09:15:44,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 09:15:44,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 09:15:44,540 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 09:15:44,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 09:15:44,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 09:15:44,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 09:15:44,562 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 09:15:44,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 09:15:44,563 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 09:15:44,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 09:15:44,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 09:15:44,564 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 09:15:44,564 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 09:15:44,564 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 09:15:44,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 09:15:44,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 09:15:44,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 09:15:44,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 09:15:44,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 09:15:44,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 09:15:44,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 09:15:44,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 09:15:44,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 09:15:44,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 09:15:44,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 09:15:44,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 09:15:44,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 09:15:44,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 09:15:44,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 09:15:44,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 09:15:44,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 09:15:44,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 09:15:44,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 09:15:44,567 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 09:15:44,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 09:15:44,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 09:15:44,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 09:15:44,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47cb7cab177485da5df0f1af4a3f61fd7eb970990493dd3ac764f888774cbf0f [2021-12-17 09:15:44,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 09:15:44,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 09:15:44,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 09:15:44,771 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 09:15:44,772 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 09:15:44,773 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-data/shared_mem1.i [2021-12-17 09:15:44,811 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7c6d0bce/d8126bd64f514a3a82fd761e241cdc34/FLAGef5483f17 [2021-12-17 09:15:45,230 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 09:15:45,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-data/shared_mem1.i [2021-12-17 09:15:45,247 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7c6d0bce/d8126bd64f514a3a82fd761e241cdc34/FLAGef5483f17 [2021-12-17 09:15:45,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7c6d0bce/d8126bd64f514a3a82fd761e241cdc34 [2021-12-17 09:15:45,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 09:15:45,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 09:15:45,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 09:15:45,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 09:15:45,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 09:15:45,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257be0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45, skipping insertion in model container [2021-12-17 09:15:45,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 09:15:45,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 09:15:45,471 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/heap-data/shared_mem1.i[23879,23892] [2021-12-17 09:15:45,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 09:15:45,479 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 09:15:45,532 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/heap-data/shared_mem1.i[23879,23892] [2021-12-17 09:15:45,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 09:15:45,552 INFO L208 MainTranslator]: Completed translation [2021-12-17 09:15:45,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45 WrapperNode [2021-12-17 09:15:45,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 09:15:45,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 09:15:45,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 09:15:45,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 09:15:45,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,593 INFO L137 Inliner]: procedures = 121, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2021-12-17 09:15:45,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 09:15:45,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 09:15:45,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 09:15:45,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 09:15:45,600 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,607 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 09:15:45,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 09:15:45,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 09:15:45,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 09:15:45,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (1/1) ... [2021-12-17 09:15:45,635 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 09:15:45,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:15:45,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 09:15:45,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 09:15:45,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 09:15:45,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 09:15:45,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-17 09:15:45,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 09:15:45,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-17 09:15:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-17 09:15:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 09:15:45,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 09:15:45,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 09:15:45,770 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 09:15:45,771 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 09:15:45,916 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 09:15:45,939 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 09:15:45,939 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-17 09:15:45,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:15:45 BoogieIcfgContainer [2021-12-17 09:15:45,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 09:15:45,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 09:15:45,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 09:15:45,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 09:15:45,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 09:15:45" (1/3) ... [2021-12-17 09:15:45,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc8714f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:15:45, skipping insertion in model container [2021-12-17 09:15:45,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 09:15:45" (2/3) ... [2021-12-17 09:15:45,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dc8714f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 09:15:45, skipping insertion in model container [2021-12-17 09:15:45,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 09:15:45" (3/3) ... [2021-12-17 09:15:45,962 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem1.i [2021-12-17 09:15:45,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 09:15:45,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 09:15:46,014 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 09:15:46,020 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 09:15:46,021 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 09:15:46,030 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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) [2021-12-17 09:15:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-17 09:15:46,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:15:46,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:15:46,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:15:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:15:46,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1650103796, now seen corresponding path program 1 times [2021-12-17 09:15:46,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:15:46,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495618044] [2021-12-17 09:15:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:15:46,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:15:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:15:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:15:46,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:15:46,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495618044] [2021-12-17 09:15:46,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495618044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 09:15:46,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 09:15:46,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 09:15:46,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454285174] [2021-12-17 09:15:46,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 09:15:46,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 09:15:46,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:15:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 09:15:46,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 09:15:46,215 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-12-17 09:15:46,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:15:46,232 INFO L93 Difference]: Finished difference Result 27 states and 38 transitions. [2021-12-17 09:15:46,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 09:15:46,234 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2021-12-17 09:15:46,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:15:46,240 INFO L225 Difference]: With dead ends: 27 [2021-12-17 09:15:46,240 INFO L226 Difference]: Without dead ends: 13 [2021-12-17 09:15:46,242 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 [2021-12-17 09:15:46,246 INFO L933 BasicCegarLoop]: 20 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, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 09:15:46,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 09:15:46,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-17 09:15:46,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-17 09:15:46,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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) [2021-12-17 09:15:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2021-12-17 09:15:46,271 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2021-12-17 09:15:46,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:15:46,271 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 17 transitions. [2021-12-17 09:15:46,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-12-17 09:15:46,272 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 17 transitions. [2021-12-17 09:15:46,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-17 09:15:46,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:15:46,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:15:46,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 09:15:46,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:15:46,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:15:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash -812668617, now seen corresponding path program 1 times [2021-12-17 09:15:46,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:15:46,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139252550] [2021-12-17 09:15:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:15:46,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:15:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:15:46,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:15:46,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:15:46,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139252550] [2021-12-17 09:15:46,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139252550] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 09:15:46,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 09:15:46,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 09:15:46,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339128269] [2021-12-17 09:15:46,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 09:15:46,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 09:15:46,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:15:46,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 09:15:46,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-17 09:15:46,545 INFO L87 Difference]: Start difference. First operand 13 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-12-17 09:15:46,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:15:46,670 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-12-17 09:15:46,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 09:15:46,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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 11 [2021-12-17 09:15:46,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:15:46,672 INFO L225 Difference]: With dead ends: 29 [2021-12-17 09:15:46,672 INFO L226 Difference]: Without dead ends: 27 [2021-12-17 09:15:46,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-17 09:15:46,673 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 31 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:15:46,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 38 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 09:15:46,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-17 09:15:46,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-12-17 09:15:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 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) [2021-12-17 09:15:46,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2021-12-17 09:15:46,678 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 11 [2021-12-17 09:15:46,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:15:46,678 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2021-12-17 09:15:46,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-12-17 09:15:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2021-12-17 09:15:46,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-17 09:15:46,679 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:15:46,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:15:46,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 09:15:46,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:15:46,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:15:46,680 INFO L85 PathProgramCache]: Analyzing trace with hash -812666695, now seen corresponding path program 1 times [2021-12-17 09:15:46,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:15:46,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723680052] [2021-12-17 09:15:46,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:15:46,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:15:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:15:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:15:46,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:15:46,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723680052] [2021-12-17 09:15:46,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723680052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 09:15:46,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 09:15:46,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 09:15:46,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126981290] [2021-12-17 09:15:46,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 09:15:46,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 09:15:46,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:15:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 09:15:46,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-17 09:15:46,894 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-12-17 09:15:46,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:15:46,995 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2021-12-17 09:15:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 09:15:46,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 11 [2021-12-17 09:15:46,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:15:46,996 INFO L225 Difference]: With dead ends: 31 [2021-12-17 09:15:46,996 INFO L226 Difference]: Without dead ends: 24 [2021-12-17 09:15:46,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-12-17 09:15:46,997 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:15:46,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 09:15:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-17 09:15:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-12-17 09:15:46,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 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) [2021-12-17 09:15:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2021-12-17 09:15:47,000 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 11 [2021-12-17 09:15:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:15:47,000 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2021-12-17 09:15:47,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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) [2021-12-17 09:15:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2021-12-17 09:15:47,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-17 09:15:47,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:15:47,001 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:15:47,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 09:15:47,001 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:15:47,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:15:47,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1760681901, now seen corresponding path program 1 times [2021-12-17 09:15:47,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:15:47,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150314699] [2021-12-17 09:15:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:15:47,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:15:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:15:47,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:15:47,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:15:47,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150314699] [2021-12-17 09:15:47,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150314699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:15:47,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756860271] [2021-12-17 09:15:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:15:47,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:15:47,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:15:47,227 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:15:47,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 09:15:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:15:47,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-17 09:15:47,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:15:47,388 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-17 09:15:47,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-17 09:15:47,428 INFO L354 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2021-12-17 09:15:47,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 71 [2021-12-17 09:15:47,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-17 09:15:47,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2021-12-17 09:15:47,541 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 49 treesize of output 41 [2021-12-17 09:15:47,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,547 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 36 treesize of output 26 [2021-12-17 09:15:47,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 49 treesize of output 29 [2021-12-17 09:15:47,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,641 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 18 treesize of output 19 [2021-12-17 09:15:47,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,651 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 18 treesize of output 19 [2021-12-17 09:15:47,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,767 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 35 treesize of output 30 [2021-12-17 09:15:47,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,778 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 26 treesize of output 23 [2021-12-17 09:15:47,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,790 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 24 treesize of output 21 [2021-12-17 09:15:47,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 20 [2021-12-17 09:15:47,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,814 INFO L354 Elim1Store]: treesize reduction 23, result has 36.1 percent of original size [2021-12-17 09:15:47,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 38 [2021-12-17 09:15:47,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:47,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:15:47,830 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-17 09:15:47,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-17 09:15:47,970 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 67 treesize of output 47 [2021-12-17 09:15:47,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 09:15:47,988 INFO L354 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-17 09:15:47,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 42 [2021-12-17 09:15:47,993 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 21 treesize of output 13 [2021-12-17 09:15:48,126 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:15:48,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-12-17 09:15:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:15:48,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:15:48,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:15:48,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756860271] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:15:48,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:15:48,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2021-12-17 09:15:48,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610720819] [2021-12-17 09:15:48,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:15:48,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-17 09:15:48,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:15:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-17 09:15:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-12-17 09:15:48,526 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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) [2021-12-17 09:15:48,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:15:48,846 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2021-12-17 09:15:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 09:15:48,847 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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 14 [2021-12-17 09:15:48,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:15:48,848 INFO L225 Difference]: With dead ends: 47 [2021-12-17 09:15:48,848 INFO L226 Difference]: Without dead ends: 45 [2021-12-17 09:15:48,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2021-12-17 09:15:48,849 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 62 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:15:48,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 92 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 25 Invalid, 0 Unknown, 70 Unchecked, 0.1s Time] [2021-12-17 09:15:48,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-17 09:15:48,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30. [2021-12-17 09:15:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 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) [2021-12-17 09:15:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2021-12-17 09:15:48,852 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 14 [2021-12-17 09:15:48,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:15:48,852 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-12-17 09:15:48,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 18 states have internal predecessors, (35), 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) [2021-12-17 09:15:48,853 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2021-12-17 09:15:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-17 09:15:48,853 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:15:48,853 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:15:48,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 09:15:49,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:15:49,068 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:15:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:15:49,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1760679979, now seen corresponding path program 1 times [2021-12-17 09:15:49,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:15:49,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090841948] [2021-12-17 09:15:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:15:49,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:15:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:15:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:15:49,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:15:49,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090841948] [2021-12-17 09:15:49,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090841948] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:15:49,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506865824] [2021-12-17 09:15:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:15:49,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:15:49,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:15:49,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:15:49,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 09:15:49,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:15:49,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-17 09:15:49,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:15:49,344 INFO L354 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2021-12-17 09:15:49,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 74 [2021-12-17 09:15:49,367 INFO L354 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2021-12-17 09:15:49,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 66 treesize of output 92 [2021-12-17 09:15:49,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-17 09:15:49,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 116 [2021-12-17 09:15:49,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,545 INFO L354 Elim1Store]: treesize reduction 66, result has 22.4 percent of original size [2021-12-17 09:15:49,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 102 [2021-12-17 09:15:49,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,609 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:15:49,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 95 [2021-12-17 09:15:49,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,723 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 36 treesize of output 26 [2021-12-17 09:15:49,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 41 [2021-12-17 09:15:49,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 42 treesize of output 26 [2021-12-17 09:15:49,816 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 63 treesize of output 51 [2021-12-17 09:15:49,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,821 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 29 [2021-12-17 09:15:49,857 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 09:15:49,858 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-17 09:15:49,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2021-12-17 09:15:49,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:15:49,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 20 [2021-12-17 09:15:49,991 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-17 09:15:49,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-17 09:15:50,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 45 treesize of output 33 [2021-12-17 09:15:50,123 INFO L354 Elim1Store]: treesize reduction 40, result has 64.0 percent of original size [2021-12-17 09:15:50,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 93 [2021-12-17 09:15:50,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 84 treesize of output 64 [2021-12-17 09:15:50,301 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 22 treesize of output 10 [2021-12-17 09:15:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:15:50,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:15:50,322 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 59 treesize of output 41 [2021-12-17 09:15:50,337 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 41 treesize of output 29 [2021-12-17 09:15:52,347 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse0 (select |c_#memory_int| v_arrayElimCell_60))) (or (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse0 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< v_ArrVal_401 (+ (select .cse0 v_arrayElimCell_61) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) is different from false [2021-12-17 09:15:54,388 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse0 (select |c_#memory_int| v_arrayElimCell_60))) (or (< v_ArrVal_401 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse0 v_arrayElimCell_61))) (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse0 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) is different from false [2021-12-17 09:15:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-17 09:15:54,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506865824] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:15:54,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:15:54,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2021-12-17 09:15:54,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498697026] [2021-12-17 09:15:54,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:15:54,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 09:15:54,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:15:54,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 09:15:54,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=130, Unknown=6, NotChecked=50, Total=240 [2021-12-17 09:15:54,504 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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) [2021-12-17 09:15:56,572 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (.cse0 (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|)) (.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (.cse4 (select |c_#valid| |c_ULTIMATE.start_main_~m~0#1.base|)) (.cse5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (and (<= |c_ULTIMATE.start_main_~head~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (not (= |c_ULTIMATE.start_main_~m~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (= 1 .cse0) (= 0 |c_ULTIMATE.start_main_~head~0#1.offset|) (or (not (= |c_ULTIMATE.start_main_~m~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (= .cse1 1)) (not (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (<= 100 .cse2) (= .cse2 100) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse3 (select |c_#memory_int| v_arrayElimCell_60))) (or (< v_ArrVal_401 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse3 v_arrayElimCell_61))) (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse3 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) (= .cse0 1) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (<= 1 .cse1) (= 0 |c_ULTIMATE.start_main_~list~0#1.offset|) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (= .cse4 1) (= 1 .cse4) (= .cse5 1) (<= 1 .cse5))) is different from false [2021-12-17 09:15:58,625 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (.cse0 (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|)) (.cse3 (select |c_#valid| |c_ULTIMATE.start_main_~m~0#1.base|)) (.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (and (<= |c_ULTIMATE.start_main_~head~0#1.offset| |c_ULTIMATE.start_main_~list~0#1.offset|) (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (not (= |c_ULTIMATE.start_main_~m~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (= 1 .cse0) (= 0 |c_ULTIMATE.start_main_~head~0#1.offset|) (not (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (<= 100 .cse1) (= .cse1 100) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse2 (select |c_#memory_int| v_arrayElimCell_60))) (or (< v_ArrVal_401 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse2 v_arrayElimCell_61))) (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse2 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) (= .cse0 1) (not (= |c_ULTIMATE.start_main_~head~0#1.offset| (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (= .cse3 1) (= 1 .cse3) (= .cse4 1) (<= 1 .cse4))) is different from false [2021-12-17 09:16:00,680 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))) (and (not (= |c_ULTIMATE.start_main_~m~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (= 0 |c_ULTIMATE.start_main_~head~0#1.offset|) (not (= |c_ULTIMATE.start_main_~head~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (= .cse0 1) (<= 100 .cse1) (= .cse1 100) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse2 (select |c_#memory_int| v_arrayElimCell_60))) (or (< v_ArrVal_401 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse2 v_arrayElimCell_61))) (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse2 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) (<= 1 .cse0))) is different from false [2021-12-17 09:16:02,744 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))) (and (<= 1 .cse0) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse1 (select |c_#memory_int| v_arrayElimCell_60))) (or (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse1 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< v_ArrVal_401 (+ (select .cse1 v_arrayElimCell_61) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) (= 0 |c_ULTIMATE.start_main_~list~0#1.offset|) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (or (not (= |c_ULTIMATE.start_main_~m~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (= .cse0 1)) (<= 100 .cse2) (= .cse2 100))) is different from false [2021-12-17 09:16:04,764 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (.cse4 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))) (and (<= 1 .cse0) (forall ((v_arrayElimCell_61 Int) (v_ArrVal_401 Int) (v_arrayElimCell_60 Int)) (let ((.cse1 (select |c_#memory_int| v_arrayElimCell_60))) (or (< 90 (select (select (store |c_#memory_int| v_arrayElimCell_60 (store .cse1 v_arrayElimCell_61 v_ArrVal_401)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< v_ArrVal_401 (+ (select .cse1 v_arrayElimCell_61) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse3))) (or (not (= |c_ULTIMATE.start_main_~m~0#1.base| .cse2)) (and (= |c_ULTIMATE.start_main_#t~mem9#1| (select (select |c_#memory_int| .cse2) (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse3))) (= .cse0 1))))) (= 0 |c_ULTIMATE.start_main_~list~0#1.offset|) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~m~0#1.base|)) (<= 100 .cse4) (= .cse4 100))) is different from false [2021-12-17 09:16:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:16:04,794 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2021-12-17 09:16:04,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 09:16:04,795 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-17 09:16:04,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:16:04,795 INFO L225 Difference]: With dead ends: 70 [2021-12-17 09:16:04,795 INFO L226 Difference]: Without dead ends: 63 [2021-12-17 09:16:04,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=134, Invalid=303, Unknown=11, NotChecked=308, Total=756 [2021-12-17 09:16:04,796 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:16:04,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 79 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 60 Invalid, 0 Unknown, 69 Unchecked, 0.1s Time] [2021-12-17 09:16:04,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-17 09:16:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 42. [2021-12-17 09:16:04,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 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) [2021-12-17 09:16:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2021-12-17 09:16:04,804 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 57 transitions. Word has length 14 [2021-12-17 09:16:04,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:16:04,804 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 57 transitions. [2021-12-17 09:16:04,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 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) [2021-12-17 09:16:04,804 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 57 transitions. [2021-12-17 09:16:04,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-17 09:16:04,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:16:04,804 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:16:04,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-17 09:16:05,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:16:05,005 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:16:05,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:16:05,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1758834859, now seen corresponding path program 1 times [2021-12-17 09:16:05,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:16:05,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397333825] [2021-12-17 09:16:05,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:16:05,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:16:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:16:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:16:05,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:16:05,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397333825] [2021-12-17 09:16:05,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397333825] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:16:05,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185243746] [2021-12-17 09:16:05,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:16:05,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:16:05,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:16:05,142 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:16:05,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 09:16:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:16:05,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 31 conjunts are in the unsatisfiable core [2021-12-17 09:16:05,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:16:05,243 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 09:16:05,244 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-17 09:16:05,259 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2021-12-17 09:16:05,262 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 [2021-12-17 09:16:05,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:05,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:05,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2021-12-17 09:16:05,319 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-17 09:16:05,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-17 09:16:05,358 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 49 treesize of output 31 [2021-12-17 09:16:05,361 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 31 treesize of output 19 [2021-12-17 09:16:05,375 INFO L354 Elim1Store]: treesize reduction 27, result has 38.6 percent of original size [2021-12-17 09:16:05,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 30 [2021-12-17 09:16:05,390 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 [2021-12-17 09:16:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:16:05,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:16:05,433 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 53 treesize of output 35 [2021-12-17 09:16:05,435 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 35 treesize of output 23 [2021-12-17 09:16:05,473 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_536 (Array Int Int)) (v_ArrVal_538 (Array Int Int)) (|v_ULTIMATE.start_main_~n~0#1.base_7| Int)) (or (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_7|))) (<= (select (select (store (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_7| v_ArrVal_536) |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_538) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 100))) is different from false [2021-12-17 09:16:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-17 09:16:05,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185243746] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:16:05,504 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:16:05,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 13 [2021-12-17 09:16:05,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299744832] [2021-12-17 09:16:05,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:16:05,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 09:16:05,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:16:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 09:16:05,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=96, Unknown=1, NotChecked=20, Total=156 [2021-12-17 09:16:05,506 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-12-17 09:16:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:16:05,655 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2021-12-17 09:16:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 09:16:05,655 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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 14 [2021-12-17 09:16:05,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:16:05,656 INFO L225 Difference]: With dead ends: 60 [2021-12-17 09:16:05,656 INFO L226 Difference]: Without dead ends: 53 [2021-12-17 09:16:05,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=167, Unknown=1, NotChecked=28, Total=272 [2021-12-17 09:16:05,657 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:16:05,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 42 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 48 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2021-12-17 09:16:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-17 09:16:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2021-12-17 09:16:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 33 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) [2021-12-17 09:16:05,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2021-12-17 09:16:05,661 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 45 transitions. Word has length 14 [2021-12-17 09:16:05,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:16:05,662 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 45 transitions. [2021-12-17 09:16:05,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 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) [2021-12-17 09:16:05,663 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 45 transitions. [2021-12-17 09:16:05,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-17 09:16:05,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:16:05,663 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:16:05,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 09:16:05,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:16:05,868 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:16:05,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:16:05,868 INFO L85 PathProgramCache]: Analyzing trace with hash 187961508, now seen corresponding path program 1 times [2021-12-17 09:16:05,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:16:05,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018164013] [2021-12-17 09:16:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:16:05,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:16:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:16:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:16:06,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:16:06,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018164013] [2021-12-17 09:16:06,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018164013] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:16:06,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591854062] [2021-12-17 09:16:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:16:06,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:16:06,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:16:06,153 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:16:06,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 09:16:06,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:16:06,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-17 09:16:06,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:16:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:06,246 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 18 treesize of output 19 [2021-12-17 09:16:06,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:06,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:06,253 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-12-17 09:16:06,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:06,258 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 30 treesize of output 30 [2021-12-17 09:16:06,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:06,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:06,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:06,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-17 09:16:06,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:06,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:06,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-17 09:16:06,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2021-12-17 09:16:06,276 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 16 treesize of output 14 [2021-12-17 09:16:06,407 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 09:16:06,408 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 102 [2021-12-17 09:16:06,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 38 [2021-12-17 09:16:06,423 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 56 treesize of output 54 [2021-12-17 09:16:06,550 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 44 treesize of output 32 [2021-12-17 09:16:06,557 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-17 09:16:06,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2021-12-17 09:16:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:16:06,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:16:06,645 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int)) (v_ArrVal_639 (Array Int Int)) (v_ArrVal_638 Int)) (let ((.cse8 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8))) (let ((.cse0 (select |c_#memory_int| .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse8))) (or (< v_ArrVal_638 (+ (select .cse0 .cse1) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (<= 101 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_636)) (.cse3 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_639)) (.cse7 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse7) 4))) (select (select (store |c_#memory_int| .cse2 (store .cse0 .cse1 v_ArrVal_638)) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5)))))))))) is different from false [2021-12-17 09:16:06,671 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_636 (Array Int Int)) (v_ArrVal_639 (Array Int Int)) (v_ArrVal_638 Int)) (let ((.cse8 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse0 (select |c_#memory_int| .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (or (< v_ArrVal_638 (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse0 .cse1))) (<= 101 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_636)) (.cse3 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_639)) (.cse7 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~head~0#1.base|) .cse7)) (.cse5 (+ (select (select .cse6 |c_ULTIMATE.start_main_~head~0#1.base|) .cse7) 4))) (select (select (store |c_#memory_int| .cse2 (store .cse0 .cse1 v_ArrVal_638)) (select (select .cse3 .cse4) .cse5)) (select (select .cse6 .cse4) .cse5)))))))))) is different from false [2021-12-17 09:16:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2021-12-17 09:16:06,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591854062] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:16:06,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:16:06,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 7] total 19 [2021-12-17 09:16:06,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550589756] [2021-12-17 09:16:06,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:16:06,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 09:16:06,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:16:06,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 09:16:06,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=231, Unknown=2, NotChecked=62, Total=342 [2021-12-17 09:16:06,727 INFO L87 Difference]: Start difference. First operand 34 states and 45 transitions. Second operand has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-12-17 09:16:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:16:07,512 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2021-12-17 09:16:07,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 09:16:07,513 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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 16 [2021-12-17 09:16:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:16:07,513 INFO L225 Difference]: With dead ends: 62 [2021-12-17 09:16:07,513 INFO L226 Difference]: Without dead ends: 34 [2021-12-17 09:16:07,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=380, Unknown=2, NotChecked=86, Total=600 [2021-12-17 09:16:07,514 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 45 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 09:16:07,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 105 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 119 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2021-12-17 09:16:07,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-17 09:16:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-17 09:16:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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) [2021-12-17 09:16:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 44 transitions. [2021-12-17 09:16:07,517 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 44 transitions. Word has length 16 [2021-12-17 09:16:07,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:16:07,517 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 44 transitions. [2021-12-17 09:16:07,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-12-17 09:16:07,518 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 44 transitions. [2021-12-17 09:16:07,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-17 09:16:07,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:16:07,518 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:16:07,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 09:16:07,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:16:07,738 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:16:07,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:16:07,739 INFO L85 PathProgramCache]: Analyzing trace with hash -319487049, now seen corresponding path program 2 times [2021-12-17 09:16:07,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:16:07,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417181026] [2021-12-17 09:16:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:16:07,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:16:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:16:07,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 09:16:07,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:16:07,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417181026] [2021-12-17 09:16:07,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417181026] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:16:07,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526166048] [2021-12-17 09:16:07,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 09:16:07,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:16:07,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:16:07,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:16:07,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 09:16:08,066 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 09:16:08,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 09:16:08,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 74 conjunts are in the unsatisfiable core [2021-12-17 09:16:08,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:16:08,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,091 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 18 treesize of output 19 [2021-12-17 09:16:08,106 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-17 09:16:08,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-17 09:16:08,134 INFO L354 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2021-12-17 09:16:08,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 71 [2021-12-17 09:16:08,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-17 09:16:08,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 42 [2021-12-17 09:16:08,195 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 49 treesize of output 41 [2021-12-17 09:16:08,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,203 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 36 treesize of output 26 [2021-12-17 09:16:08,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 49 treesize of output 29 [2021-12-17 09:16:08,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,274 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 18 treesize of output 19 [2021-12-17 09:16:08,375 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-17 09:16:08,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-12-17 09:16:08,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,385 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-17 09:16:08,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,395 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-17 09:16:08,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,411 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-12-17 09:16:08,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 20 [2021-12-17 09:16:08,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:16:08,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:16:08,452 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-17 09:16:08,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-17 09:16:08,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-17 09:16:08,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,608 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-17 09:16:08,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2021-12-17 09:16:08,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 21 [2021-12-17 09:16:08,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:16:08,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:16:08,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:08,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 20 [2021-12-17 09:16:08,652 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-17 09:16:08,652 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 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-17 09:16:08,668 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-17 09:16:08,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-12-17 09:16:08,795 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 67 treesize of output 47 [2021-12-17 09:16:08,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 09:16:08,812 INFO L354 Elim1Store]: treesize reduction 12, result has 62.5 percent of original size [2021-12-17 09:16:08,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 42 [2021-12-17 09:16:08,816 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 21 treesize of output 13 [2021-12-17 09:16:08,920 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:16:08,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2021-12-17 09:16:08,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:16:08,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:16:09,363 INFO L354 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2021-12-17 09:16:09,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 774 treesize of output 670 [2021-12-17 09:16:09,956 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_14 (Array Int Int)) (v_ArrVal_859 Int) (v_ArrVal_870 (Array Int Int)) (v_ArrVal_857 Int) (v_ArrVal_871 (Array Int Int)) (v_ArrVal_855 Int) (v_ArrVal_854 Int) (v_ArrVal_863 (Array Int Int)) (v_ArrVal_865 Int) (v_ArrVal_862 (Array Int Int)) (v_ArrVal_842 Int) (v_ArrVal_843 (Array Int Int)) (|v_ULTIMATE.start_main_~n~0#1.offset_11| Int) (|v_ULTIMATE.start_main_~n~0#1.base_12| Int) (v_ArrVal_864 (Array Int Int)) (v_ArrVal_873 Int) (|v_ULTIMATE.start_main_~n~0#1.base_11| Int) (v_ArrVal_860 Int) (v_ArrVal_844 (Array Int Int)) (v_ArrVal_839 (Array Int Int))) (let ((.cse8 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)) (.cse6 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse1 (let ((.cse10 (store (let ((.cse11 (store |c_#memory_int| |v_ULTIMATE.start_main_~n~0#1.base_12| v_ArrVal_844))) (store .cse11 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse11 |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_857))) |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_870))) (store .cse10 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_865)))) (.cse2 (select (select (let ((.cse9 (store (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_12| v_ArrVal_839) |c_ULTIMATE.start_main_~list~0#1.base| (store (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_main_~n~0#1.base_12| v_ArrVal_843) |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_854)))) (store (store .cse9 |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_862) |c_ULTIMATE.start_main_~list~0#1.base| (store (select (store .cse9 |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_863) |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_860))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse3 (select .cse1 .cse2)) (.cse4 (select (select (let ((.cse5 (let ((.cse7 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_main_~n~0#1.base_12| v_arrayElimArr_14))) (store .cse7 |c_ULTIMATE.start_main_~list~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_842))))) (store (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_871) |c_ULTIMATE.start_main_~list~0#1.base| (store (select (store .cse5 |v_ULTIMATE.start_main_~n~0#1.base_11| v_ArrVal_864) |c_ULTIMATE.start_main_~list~0#1.base|) .cse6 v_ArrVal_859))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse8))) (let ((.cse0 (select .cse3 .cse4))) (or (not (= (select v_arrayElimArr_14 (+ |v_ULTIMATE.start_main_~n~0#1.offset_11| 8)) |c_ULTIMATE.start_main_~head~0#1.offset|)) (< (+ .cse0 (select (select .cse1 |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) v_ArrVal_873) (< 100 .cse0) (not (= 0 (select |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_12|))) (not (= 0 (select (store |c_#valid| |v_ULTIMATE.start_main_~n~0#1.base_12| v_ArrVal_855) |v_ULTIMATE.start_main_~n~0#1.base_11|))) (<= (select (select (store .cse1 .cse2 (store .cse3 .cse4 v_ArrVal_873)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (not (= (select v_arrayElimArr_14 (+ |v_ULTIMATE.start_main_~n~0#1.offset_11| 4)) |c_ULTIMATE.start_main_~m~0#1.offset|)))))))) is different from false [2021-12-17 09:16:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-12-17 09:16:11,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526166048] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:16:11,179 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:16:11,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2021-12-17 09:16:11,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43098160] [2021-12-17 09:16:11,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:16:11,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-17 09:16:11,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:16:11,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-17 09:16:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=281, Unknown=1, NotChecked=34, Total=380 [2021-12-17 09:16:11,181 INFO L87 Difference]: Start difference. First operand 34 states and 44 transitions. Second operand has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 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) [2021-12-17 09:16:11,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:16:11,447 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2021-12-17 09:16:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 09:16:11,447 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 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 17 [2021-12-17 09:16:11,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:16:11,448 INFO L225 Difference]: With dead ends: 37 [2021-12-17 09:16:11,448 INFO L226 Difference]: Without dead ends: 35 [2021-12-17 09:16:11,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=407, Unknown=1, NotChecked=42, Total=552 [2021-12-17 09:16:11,449 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 18 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 09:16:11,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 62 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 57 Unchecked, 0.0s Time] [2021-12-17 09:16:11,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-17 09:16:11,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2021-12-17 09:16:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 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) [2021-12-17 09:16:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-12-17 09:16:11,452 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 17 [2021-12-17 09:16:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:16:11,453 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-12-17 09:16:11,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.1) internal successors, (42), 20 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) [2021-12-17 09:16:11,453 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2021-12-17 09:16:11,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-17 09:16:11,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:16:11,453 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:16:11,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-17 09:16:11,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:16:11,654 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:16:11,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:16:11,654 INFO L85 PathProgramCache]: Analyzing trace with hash -2098222328, now seen corresponding path program 1 times [2021-12-17 09:16:11,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:16:11,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817290843] [2021-12-17 09:16:11,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:16:11,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:16:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:16:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:16:11,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:16:11,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817290843] [2021-12-17 09:16:11,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817290843] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:16:11,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487049716] [2021-12-17 09:16:11,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:16:11,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:16:11,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:16:11,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:16:11,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 09:16:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:16:12,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 67 conjunts are in the unsatisfiable core [2021-12-17 09:16:12,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:16:12,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,107 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 18 treesize of output 19 [2021-12-17 09:16:12,138 INFO L354 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2021-12-17 09:16:12,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 74 [2021-12-17 09:16:12,177 INFO L354 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2021-12-17 09:16:12,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 66 treesize of output 92 [2021-12-17 09:16:12,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-17 09:16:12,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2021-12-17 09:16:12,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 103 [2021-12-17 09:16:12,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,265 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 32 treesize of output 22 [2021-12-17 09:16:12,295 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 5 treesize of output 3 [2021-12-17 09:16:12,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 38 treesize of output 22 [2021-12-17 09:16:12,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,361 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 45 treesize of output 37 [2021-12-17 09:16:12,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,367 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 32 treesize of output 22 [2021-12-17 09:16:12,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,391 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 18 treesize of output 19 [2021-12-17 09:16:12,404 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 09:16:12,404 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-17 09:16:12,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,538 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 26 treesize of output 23 [2021-12-17 09:16:12,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,545 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 26 treesize of output 23 [2021-12-17 09:16:12,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,561 INFO L354 Elim1Store]: treesize reduction 28, result has 15.2 percent of original size [2021-12-17 09:16:12,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 31 [2021-12-17 09:16:12,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:16:12,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:16:12,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 20 [2021-12-17 09:16:12,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:16:12,590 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-17 09:16:12,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-17 09:16:12,702 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 49 treesize of output 33 [2021-12-17 09:16:12,718 INFO L354 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2021-12-17 09:16:12,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 39 [2021-12-17 09:16:12,725 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 23 treesize of output 15 [2021-12-17 09:16:12,832 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 49 treesize of output 31 [2021-12-17 09:16:12,834 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 31 treesize of output 19 [2021-12-17 09:16:12,867 INFO L354 Elim1Store]: treesize reduction 51, result has 46.3 percent of original size [2021-12-17 09:16:12,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 62 [2021-12-17 09:16:12,909 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 [2021-12-17 09:16:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:16:12,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:16:12,962 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 53 treesize of output 35 [2021-12-17 09:16:12,977 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 35 treesize of output 23 [2021-12-17 09:16:14,997 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_160 Int) (v_arrayElimCell_161 Int) (v_ArrVal_1045 Int)) (let ((.cse0 (select |c_#memory_int| v_arrayElimCell_160))) (or (<= (select (select (store |c_#memory_int| v_arrayElimCell_160 (store .cse0 v_arrayElimCell_161 v_ArrVal_1045)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (< 100 (select .cse0 v_arrayElimCell_161))))) is different from false [2021-12-17 09:16:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-17 09:16:17,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487049716] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:16:17,293 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:16:17,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 25 [2021-12-17 09:16:17,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413038549] [2021-12-17 09:16:17,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:16:17,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-17 09:16:17,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:16:17,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-17 09:16:17,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=460, Unknown=1, NotChecked=44, Total=600 [2021-12-17 09:16:17,295 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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) [2021-12-17 09:16:19,496 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~m~0#1.offset| 0) (forall ((v_arrayElimCell_160 Int) (v_arrayElimCell_161 Int) (v_ArrVal_1045 Int)) (let ((.cse0 (select |c_#memory_int| v_arrayElimCell_160))) (or (<= (select (select (store |c_#memory_int| v_arrayElimCell_160 (store .cse0 v_arrayElimCell_161 v_ArrVal_1045)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (< 100 (select .cse0 v_arrayElimCell_161))))) (exists ((|ULTIMATE.start_main_~list~0#1.base| Int)) (let ((.cse1 (select (select |c_#memory_int| |ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))) (and (= .cse1 1) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) (+ .cse1 100)))))) is different from false [2021-12-17 09:16:21,508 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse1 (= |c_ULTIMATE.start_main_~m~0#1.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse6))) (.cse0 (<= (select .cse4 |c_ULTIMATE.start_main_~m~0#1.offset|) 109)) (.cse2 (not |c_ULTIMATE.start_main_#t~short19#1|))) (and (or .cse0 .cse1 .cse2) |c_ULTIMATE.start_main_#t~short19#1| (or (not .cse1) (let ((.cse5 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse6))) (let ((.cse3 (= |c_ULTIMATE.start_main_~m~0#1.offset| .cse5))) (and (or (not .cse3) (<= 101 (select .cse4 .cse5))) (or .cse0 .cse3 .cse2))))) (or (forall ((v_arrayElimCell_160 Int) (v_arrayElimCell_161 Int) (v_ArrVal_1045 Int)) (let ((.cse7 (select |c_#memory_int| v_arrayElimCell_160))) (or (<= (select (select (store |c_#memory_int| v_arrayElimCell_160 (store .cse7 v_arrayElimCell_161 v_ArrVal_1045)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109) (< 100 (select .cse7 v_arrayElimCell_161))))) .cse2)))) is different from false [2021-12-17 09:17:15,872 WARN L227 SmtUtils]: Spent 42.29s on a formula simplification. DAG size of input: 44 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-17 09:17:15,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:17:15,889 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2021-12-17 09:17:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 09:17:15,889 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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 19 [2021-12-17 09:17:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:17:15,889 INFO L225 Difference]: With dead ends: 49 [2021-12-17 09:17:15,890 INFO L226 Difference]: Without dead ends: 37 [2021-12-17 09:17:15,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 63.0s TimeCoverageRelationStatistics Valid=163, Invalid=652, Unknown=9, NotChecked=168, Total=992 [2021-12-17 09:17:15,891 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:17:15,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 77 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 43 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2021-12-17 09:17:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-17 09:17:15,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2021-12-17 09:17:15,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 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) [2021-12-17 09:17:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2021-12-17 09:17:15,895 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 19 [2021-12-17 09:17:15,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:17:15,895 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2021-12-17 09:17:15,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 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) [2021-12-17 09:17:15,895 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2021-12-17 09:17:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-17 09:17:15,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:17:15,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:17:15,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 09:17:16,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:17:16,103 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:17:16,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:17:16,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2098220406, now seen corresponding path program 1 times [2021-12-17 09:17:16,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:17:16,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971837417] [2021-12-17 09:17:16,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:17:16,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:17:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:17:16,375 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:17:16,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:17:16,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971837417] [2021-12-17 09:17:16,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971837417] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:17:16,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468003509] [2021-12-17 09:17:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:17:16,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:17:16,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:17:16,376 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:17:16,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 09:17:16,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:17:16,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-17 09:17:16,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:17:16,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,515 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 18 treesize of output 19 [2021-12-17 09:17:16,527 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 09:17:16,527 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-17 09:17:16,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-12-17 09:17:16,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,547 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 33 [2021-12-17 09:17:16,552 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 30 treesize of output 30 [2021-12-17 09:17:16,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-17 09:17:16,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-12-17 09:17:16,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-17 09:17:16,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-17 09:17:16,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 31 [2021-12-17 09:17:16,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:17:16,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:17:16,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:16,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 20 [2021-12-17 09:17:16,733 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-17 09:17:16,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-17 09:17:16,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 52 treesize of output 36 [2021-12-17 09:17:16,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 30 [2021-12-17 09:17:16,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 17 [2021-12-17 09:17:16,982 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 49 treesize of output 31 [2021-12-17 09:17:16,984 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 31 treesize of output 19 [2021-12-17 09:17:17,020 INFO L354 Elim1Store]: treesize reduction 51, result has 46.3 percent of original size [2021-12-17 09:17:17,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 62 [2021-12-17 09:17:17,132 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 [2021-12-17 09:17:17,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:17:17,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:17:17,180 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 53 treesize of output 35 [2021-12-17 09:17:17,182 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 35 treesize of output 23 [2021-12-17 09:17:19,206 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimCell_188 Int) (v_arrayElimCell_187 Int) (v_ArrVal_1218 Int)) (let ((.cse0 (select |c_#memory_int| v_arrayElimCell_187))) (or (<= 91 (select (select (store |c_#memory_int| v_arrayElimCell_187 (store .cse0 v_arrayElimCell_188 v_ArrVal_1218)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< 100 (select .cse0 v_arrayElimCell_188))))) is different from false [2021-12-17 09:17:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-17 09:17:26,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468003509] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:17:26,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:17:26,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 25 [2021-12-17 09:17:26,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767406339] [2021-12-17 09:17:26,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:17:26,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-17 09:17:26,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:17:26,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-17 09:17:26,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=456, Unknown=3, NotChecked=44, Total=600 [2021-12-17 09:17:26,447 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 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) [2021-12-17 09:17:28,804 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~m~0#1.offset| 0) (exists ((|ULTIMATE.start_main_~list~0#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_main_~list~0#1.base|) 0))) (and (<= 1 .cse0) (<= (+ .cse0 100) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) (forall ((v_arrayElimCell_188 Int) (v_arrayElimCell_187 Int) (v_ArrVal_1218 Int)) (let ((.cse1 (select |c_#memory_int| v_arrayElimCell_187))) (or (<= 91 (select (select (store |c_#memory_int| v_arrayElimCell_187 (store .cse1 v_arrayElimCell_188 v_ArrVal_1218)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< 100 (select .cse1 v_arrayElimCell_188)))))) is different from false [2021-12-17 09:17:30,820 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (not |c_ULTIMATE.start_main_#t~short19#1|))) (and (or .cse0 (forall ((v_arrayElimCell_188 Int) (v_arrayElimCell_187 Int) (v_ArrVal_1218 Int)) (let ((.cse1 (select |c_#memory_int| v_arrayElimCell_187))) (or (<= 91 (select (select (store |c_#memory_int| v_arrayElimCell_187 (store .cse1 v_arrayElimCell_188 v_ArrVal_1218)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< 100 (select .cse1 v_arrayElimCell_188)))))) |c_ULTIMATE.start_main_#t~short19#1| (let ((.cse4 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse4)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse4))) (or (not (= |c_ULTIMATE.start_main_~m~0#1.base| .cse2)) (not (= |c_ULTIMATE.start_main_~m~0#1.offset| .cse3)) (<= 101 (select (select |c_#memory_int| .cse2) .cse3))))) (or .cse0 (<= 91 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))) is different from false [2021-12-17 09:17:32,834 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse2 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse2)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))) (or (not (= |c_ULTIMATE.start_main_~m~0#1.base| .cse0)) (not (= |c_ULTIMATE.start_main_~m~0#1.offset| .cse1)) (<= 101 (select (select |c_#memory_int| .cse0) .cse1))))) (forall ((v_arrayElimCell_188 Int) (v_arrayElimCell_187 Int) (v_ArrVal_1218 Int)) (let ((.cse3 (select |c_#memory_int| v_arrayElimCell_187))) (or (<= 91 (select (select (store |c_#memory_int| v_arrayElimCell_187 (store .cse3 v_arrayElimCell_188 v_ArrVal_1218)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (< 100 (select .cse3 v_arrayElimCell_188))))) (<= 91 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))) is different from false [2021-12-17 09:17:32,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:17:32,839 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2021-12-17 09:17:32,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 09:17:32,839 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 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 19 [2021-12-17 09:17:32,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:17:32,840 INFO L225 Difference]: With dead ends: 63 [2021-12-17 09:17:32,840 INFO L226 Difference]: Without dead ends: 50 [2021-12-17 09:17:32,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=161, Invalid=661, Unknown=6, NotChecked=228, Total=1056 [2021-12-17 09:17:32,842 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 27 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:17:32,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 117 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 66 Unchecked, 0.1s Time] [2021-12-17 09:17:32,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-17 09:17:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-17 09:17:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 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) [2021-12-17 09:17:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2021-12-17 09:17:32,846 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 19 [2021-12-17 09:17:32,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:17:32,846 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2021-12-17 09:17:32,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.92) internal successors, (48), 25 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) [2021-12-17 09:17:32,846 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2021-12-17 09:17:32,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-17 09:17:32,847 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:17:32,847 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:17:32,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 09:17:33,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:17:33,068 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:17:33,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:17:33,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2096375286, now seen corresponding path program 1 times [2021-12-17 09:17:33,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:17:33,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497032767] [2021-12-17 09:17:33,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:17:33,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:17:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:17:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:17:33,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:17:33,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497032767] [2021-12-17 09:17:33,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497032767] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:17:33,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077731792] [2021-12-17 09:17:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:17:33,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:17:33,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:17:33,423 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:17:33,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 09:17:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:17:33,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 92 conjunts are in the unsatisfiable core [2021-12-17 09:17:33,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:17:33,588 INFO L354 Elim1Store]: treesize reduction 13, result has 58.1 percent of original size [2021-12-17 09:17:33,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 74 [2021-12-17 09:17:33,628 INFO L354 Elim1Store]: treesize reduction 46, result has 37.0 percent of original size [2021-12-17 09:17:33,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 66 treesize of output 92 [2021-12-17 09:17:33,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-12-17 09:17:33,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2021-12-17 09:17:33,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 69 [2021-12-17 09:17:33,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 42 treesize of output 26 [2021-12-17 09:17:33,773 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 63 treesize of output 51 [2021-12-17 09:17:33,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,777 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 29 [2021-12-17 09:17:33,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,796 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 18 treesize of output 19 [2021-12-17 09:17:33,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,804 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 18 treesize of output 19 [2021-12-17 09:17:33,817 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 09:17:33,818 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-17 09:17:33,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 51 [2021-12-17 09:17:33,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 30 [2021-12-17 09:17:33,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-12-17 09:17:33,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-17 09:17:33,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-17 09:17:33,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:17:33,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:33,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:17:33,989 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-12-17 09:17:33,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2021-12-17 09:17:34,301 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-17 09:17:34,302 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 173 treesize of output 154 [2021-12-17 09:17:34,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 54 [2021-12-17 09:17:34,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 75 [2021-12-17 09:17:34,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 09:17:34,649 INFO L354 Elim1Store]: treesize reduction 25, result has 10.7 percent of original size [2021-12-17 09:17:34,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 202 treesize of output 110 [2021-12-17 09:17:34,659 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-12-17 09:17:34,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 58 [2021-12-17 09:17:34,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 52 treesize of output 38 [2021-12-17 09:17:34,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 17 [2021-12-17 09:17:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:17:34,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:17:36,909 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1402 (Array Int Int)) (v_ArrVal_1400 (Array Int Int)) (v_ArrVal_1401 Int) (v_ArrVal_1404 Int)) (let ((.cse12 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse11 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse12))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| .cse11 v_ArrVal_1400)) (.cse13 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse4 (select (select .cse8 |c_ULTIMATE.start_main_~list~0#1.base|) .cse13)) (.cse10 (store |c_#memory_$Pointer$.base| .cse11 v_ArrVal_1402))) (let ((.cse3 (select (select .cse10 |c_ULTIMATE.start_main_~list~0#1.base|) .cse13)) (.cse9 (+ .cse4 4)) (.cse5 (select |c_#memory_int| .cse11)) (.cse6 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse12))) (let ((.cse2 (store |c_#memory_int| .cse11 (store .cse5 .cse6 v_ArrVal_1401))) (.cse7 (select (select .cse10 .cse3) .cse9))) (let ((.cse0 (select .cse2 .cse7)) (.cse1 (select (select .cse8 .cse3) .cse9))) (or (< (select .cse0 .cse1) (+ (select (select .cse2 .cse3) .cse4) v_ArrVal_1404)) (< (+ (select .cse5 .cse6) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) v_ArrVal_1401) (<= (select (select (store .cse2 .cse7 (store .cse0 .cse1 v_ArrVal_1404)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109)))))))))) is different from false [2021-12-17 09:17:36,961 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1402 (Array Int Int)) (v_ArrVal_1400 (Array Int Int)) (v_ArrVal_1401 Int) (v_ArrVal_1404 Int)) (let ((.cse12 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (let ((.cse11 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) .cse12))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| .cse11 v_ArrVal_1400)) (.cse13 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse6 (select (select .cse8 |c_ULTIMATE.start_main_~head~0#1.base|) .cse13)) (.cse10 (store |c_#memory_$Pointer$.base| .cse11 v_ArrVal_1402))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~head~0#1.base|) .cse13)) (.cse9 (+ .cse6 4)) (.cse0 (select |c_#memory_int| .cse11)) (.cse1 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~head~0#1.base|) .cse12))) (let ((.cse4 (store |c_#memory_int| .cse11 (store .cse0 .cse1 v_ArrVal_1401))) (.cse7 (select (select .cse10 .cse5) .cse9))) (let ((.cse2 (select .cse4 .cse7)) (.cse3 (select (select .cse8 .cse5) .cse9))) (or (< (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (select .cse0 .cse1)) v_ArrVal_1401) (< (select .cse2 .cse3) (+ (select (select .cse4 .cse5) .cse6) v_ArrVal_1404)) (<= (select (select (store .cse4 .cse7 (store .cse2 .cse3 v_ArrVal_1404)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 109)))))))))) is different from false [2021-12-17 09:17:37,066 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:17:37,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 2059 treesize of output 1651 [2021-12-17 09:17:37,102 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:17:37,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 1639 treesize of output 1573 [2021-12-17 09:17:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-17 09:17:39,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077731792] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 09:17:39,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 09:17:39,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 24 [2021-12-17 09:17:39,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74923987] [2021-12-17 09:17:39,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 09:17:39,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-17 09:17:39,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:17:39,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-17 09:17:39,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=392, Unknown=3, NotChecked=82, Total=552 [2021-12-17 09:17:39,477 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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) [2021-12-17 09:17:56,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:17:56,401 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2021-12-17 09:17:56,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 09:17:56,402 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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 19 [2021-12-17 09:17:56,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:17:56,402 INFO L225 Difference]: With dead ends: 58 [2021-12-17 09:17:56,402 INFO L226 Difference]: Without dead ends: 56 [2021-12-17 09:17:56,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=177, Invalid=637, Unknown=6, NotChecked=110, Total=930 [2021-12-17 09:17:56,403 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 48 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:17:56,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 87 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 44 Invalid, 0 Unknown, 66 Unchecked, 0.1s Time] [2021-12-17 09:17:56,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-17 09:17:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-12-17 09:17:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 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) [2021-12-17 09:17:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2021-12-17 09:17:56,418 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 19 [2021-12-17 09:17:56,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:17:56,419 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2021-12-17 09:17:56,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 24 states have internal predecessors, (49), 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) [2021-12-17 09:17:56,423 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2021-12-17 09:17:56,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-17 09:17:56,423 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:17:56,423 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:17:56,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 09:17:56,623 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,SelfDestructingSolverStorable10 [2021-12-17 09:17:56,624 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:17:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:17:56,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2096373364, now seen corresponding path program 1 times [2021-12-17 09:17:56,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:17:56,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349157213] [2021-12-17 09:17:56,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:17:56,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:17:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:17:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:17:56,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:17:56,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349157213] [2021-12-17 09:17:56,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349157213] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:17:56,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327201818] [2021-12-17 09:17:56,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:17:56,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:17:56,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:17:56,857 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:17:56,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 09:17:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:17:56,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-17 09:17:56,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:17:56,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:56,992 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 18 treesize of output 19 [2021-12-17 09:17:57,007 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 09:17:57,008 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-17 09:17:57,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2021-12-17 09:17:57,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 28 [2021-12-17 09:17:57,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:57,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:57,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-17 09:17:57,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:57,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 24 [2021-12-17 09:17:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:17:57,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:17:57,135 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-12-17 09:17:57,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2021-12-17 09:17:57,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-17 09:17:57,338 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-12-17 09:17:57,338 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 111 [2021-12-17 09:17:57,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 45 [2021-12-17 09:17:57,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-12-17 09:17:57,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 09:17:57,571 INFO L354 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2021-12-17 09:17:57,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 205 treesize of output 107 [2021-12-17 09:17:57,590 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-12-17 09:17:57,590 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 5 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 49 [2021-12-17 09:17:57,593 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 39 treesize of output 26 [2021-12-17 09:17:57,628 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-17 09:17:57,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-12-17 09:17:57,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:17:57,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:17:59,834 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1573 (Array Int Int)) (v_ArrVal_1575 Int) (v_ArrVal_1572 (Array Int Int))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_1573)) (.cse11 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~list~0#1.base|) .cse11)) (.cse9 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_1574))) (let ((.cse5 (select (select .cse9 |c_ULTIMATE.start_main_~list~0#1.base|) .cse11)) (.cse8 (+ .cse6 4))) (let ((.cse0 (store |c_#memory_int| .cse10 v_ArrVal_1572)) (.cse1 (select (select .cse9 .cse5) .cse8))) (let ((.cse2 (select .cse0 .cse1)) (.cse3 (select (select .cse7 .cse5) .cse8))) (let ((.cse4 (select .cse2 .cse3))) (or (<= 91 (select (select (store .cse0 .cse1 (store .cse2 .cse3 v_ArrVal_1575)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (<= .cse4 100) (< (+ (select (select .cse0 .cse5) .cse6) v_ArrVal_1575) .cse4)))))))))) is different from false [2021-12-17 09:17:59,875 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1574 (Array Int Int)) (v_ArrVal_1573 (Array Int Int)) (v_ArrVal_1575 Int) (v_ArrVal_1572 (Array Int Int))) (let ((.cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| .cse10 v_ArrVal_1573)) (.cse11 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse3 (select (select .cse7 |c_ULTIMATE.start_main_~head~0#1.base|) .cse11)) (.cse9 (store |c_#memory_$Pointer$.base| .cse10 v_ArrVal_1574))) (let ((.cse2 (select (select .cse9 |c_ULTIMATE.start_main_~head~0#1.base|) .cse11)) (.cse8 (+ .cse3 4))) (let ((.cse1 (store |c_#memory_int| .cse10 v_ArrVal_1572)) (.cse4 (select (select .cse9 .cse2) .cse8))) (let ((.cse5 (select .cse1 .cse4)) (.cse6 (select (select .cse7 .cse2) .cse8))) (let ((.cse0 (select .cse5 .cse6))) (or (<= .cse0 100) (< (+ v_ArrVal_1575 (select (select .cse1 .cse2) .cse3)) .cse0) (<= 91 (select (select (store .cse1 .cse4 (store .cse5 .cse6 v_ArrVal_1575)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|))))))))))) is different from false [2021-12-17 09:17:59,941 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:17:59,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 1743 treesize of output 1515 [2021-12-17 09:17:59,959 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:17:59,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1503 treesize of output 1457 [2021-12-17 09:18:00,018 INFO L354 Elim1Store]: treesize reduction 36, result has 57.6 percent of original size [2021-12-17 09:18:00,019 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 1 new quantified variables, introduced 3 case distinctions, treesize of input 1433 treesize of output 1129 [2021-12-17 09:18:00,080 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:18:00,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 22834 treesize of output 20833 [2021-12-17 09:18:00,303 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:18:00,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52387 treesize of output 44898 [2021-12-17 09:18:00,507 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:18:00,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44447 treesize of output 43369 [2021-12-17 09:18:01,004 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:18:01,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 42568 treesize of output 42272 [2021-12-17 09:18:01,519 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:18:01,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 40842 treesize of output 40758 [2021-12-17 09:18:01,785 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-17 09:18:01,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 09:18:01,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-12-17 09:18:01,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006937386] [2021-12-17 09:18:01,785 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 09:18:01,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 09:18:01,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 09:18:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 09:18:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=324, Unknown=2, NotChecked=74, Total=462 [2021-12-17 09:18:01,787 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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) [2021-12-17 09:18:02,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 09:18:02,182 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2021-12-17 09:18:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-17 09:18:02,183 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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 19 [2021-12-17 09:18:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 09:18:02,183 INFO L225 Difference]: With dead ends: 62 [2021-12-17 09:18:02,183 INFO L226 Difference]: Without dead ends: 55 [2021-12-17 09:18:02,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=130, Invalid=578, Unknown=2, NotChecked=102, Total=812 [2021-12-17 09:18:02,184 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 09:18:02,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 51 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 09:18:02,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-17 09:18:02,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2021-12-17 09:18:02,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.3061224489795917) internal successors, (64), 49 states have internal predecessors, (64), 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) [2021-12-17 09:18:02,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2021-12-17 09:18:02,188 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 19 [2021-12-17 09:18:02,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 09:18:02,188 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2021-12-17 09:18:02,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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) [2021-12-17 09:18:02,188 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2021-12-17 09:18:02,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-17 09:18:02,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 09:18:02,189 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 09:18:02,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-17 09:18:02,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:18:02,400 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 09:18:02,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 09:18:02,400 INFO L85 PathProgramCache]: Analyzing trace with hash -209498714, now seen corresponding path program 2 times [2021-12-17 09:18:02,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 09:18:02,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725807001] [2021-12-17 09:18:02,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 09:18:02,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 09:18:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 09:18:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-17 09:18:02,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 09:18:02,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725807001] [2021-12-17 09:18:02,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725807001] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 09:18:02,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340368226] [2021-12-17 09:18:02,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 09:18:02,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 09:18:02,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 09:18:02,759 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 09:18:02,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-17 09:18:02,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 09:18:02,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 09:18:02,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 79 conjunts are in the unsatisfiable core [2021-12-17 09:18:02,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 09:18:02,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:02,934 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 18 treesize of output 19 [2021-12-17 09:18:02,953 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 09:18:02,954 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2021-12-17 09:18:03,031 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-12-17 09:18:03,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-12-17 09:18:03,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:03,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:03,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2021-12-17 09:18:03,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:03,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:18:03,056 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-17 09:18:03,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-17 09:18:03,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 28 [2021-12-17 09:18:03,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:03,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:03,203 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-17 09:18:03,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 46 [2021-12-17 09:18:03,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:03,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:03,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2021-12-17 09:18:03,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:03,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 22 [2021-12-17 09:18:03,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-12-17 09:18:03,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 09:18:03,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-12-17 09:18:03,239 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-12-17 09:18:03,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-12-17 09:18:03,257 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-17 09:18:03,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2021-12-17 09:18:03,387 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-17 09:18:03,387 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 64 [2021-12-17 09:18:03,399 INFO L354 Elim1Store]: treesize reduction 29, result has 48.2 percent of original size [2021-12-17 09:18:03,399 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 1 case distinctions, treesize of input 26 treesize of output 44 [2021-12-17 09:18:03,403 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 22 treesize of output 24 [2021-12-17 09:18:03,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 09:18:03,686 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-17 09:18:03,686 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 4 new quantified variables, introduced 2 case distinctions, treesize of input 129 treesize of output 66 [2021-12-17 09:18:03,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 33 [2021-12-17 09:18:03,741 INFO L354 Elim1Store]: treesize reduction 40, result has 57.9 percent of original size [2021-12-17 09:18:03,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 73 [2021-12-17 09:18:14,508 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:18:14,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 118 treesize of output 170 [2021-12-17 09:18:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 09:18:15,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 09:18:15,200 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1807 Int) (v_ArrVal_1806 (Array Int Int)) (v_ArrVal_1805 (Array Int Int)) (v_ArrVal_1804 (Array Int Int))) (let ((.cse9 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4)))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse9 v_ArrVal_1805)) (.cse10 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 8))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~list~0#1.base|) .cse10)) (.cse8 (store |c_#memory_$Pointer$.base| .cse9 v_ArrVal_1806))) (let ((.cse1 (select (select .cse8 |c_ULTIMATE.start_main_~list~0#1.base|) .cse10)) (.cse7 (+ .cse2 4))) (let ((.cse0 (store |c_#memory_int| .cse9 v_ArrVal_1804)) (.cse5 (select (select .cse8 .cse1) .cse7))) (let ((.cse3 (select .cse0 .cse5)) (.cse4 (select (select .cse6 .cse1) .cse7))) (or (<= (select (select .cse0 |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 90) (< v_ArrVal_1807 (+ (select (select .cse0 .cse1) .cse2) (select .cse3 .cse4))) (< 90 (select (select (store .cse0 .cse5 (store .cse3 .cse4 v_ArrVal_1807)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)))))))))) is different from false [2021-12-17 09:18:15,251 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1807 Int) (v_ArrVal_1806 (Array Int Int)) (v_ArrVal_1805 (Array Int Int)) (v_ArrVal_1804 (Array Int Int))) (let ((.cse9 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~head~0#1.base|) (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4)))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse9 v_ArrVal_1805)) (.cse10 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 8))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~head~0#1.base|) .cse10)) (.cse8 (store |c_#memory_$Pointer$.base| .cse9 v_ArrVal_1806))) (let ((.cse1 (select (select .cse8 |c_ULTIMATE.start_main_~head~0#1.base|) .cse10)) (.cse7 (+ .cse2 4))) (let ((.cse0 (store |c_#memory_int| .cse9 v_ArrVal_1804)) (.cse5 (select (select .cse8 .cse1) .cse7))) (let ((.cse3 (select .cse0 .cse5)) (.cse4 (select (select .cse6 .cse1) .cse7))) (or (< v_ArrVal_1807 (+ (select (select .cse0 .cse1) .cse2) (select .cse3 .cse4))) (< 90 (select (select (store .cse0 .cse5 (store .cse3 .cse4 v_ArrVal_1807)) |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|)) (<= (select (select .cse0 |c_ULTIMATE.start_main_~m~0#1.base|) |c_ULTIMATE.start_main_~m~0#1.offset|) 90))))))))) is different from false [2021-12-17 09:18:15,319 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:18:15,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 1045 treesize of output 999 [2021-12-17 09:18:25,546 WARN L227 SmtUtils]: Spent 10.20s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-17 09:18:25,546 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:18:25,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4069235 treesize of output 3982569 [2021-12-17 09:18:30,267 INFO L354 Elim1Store]: treesize reduction 174, result has 95.7 percent of original size [2021-12-17 09:18:30,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 82576773 treesize of output 74491688 [2021-12-17 09:18:54,716 WARN L227 SmtUtils]: Spent 24.44s on a formula simplification that was a NOOP. DAG size: 4026 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 09:18:56,239 INFO L244 Elim1Store]: Index analysis took 501 ms [2021-12-17 09:19:44,985 WARN L227 SmtUtils]: Spent 48.72s on a formula simplification. DAG size of input: 1703 DAG size of output: 1655 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-17 09:19:44,988 INFO L354 Elim1Store]: treesize reduction 222, result has 98.1 percent of original size [2021-12-17 09:19:44,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 29 select indices, 29 select index equivalence classes, 0 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 406 case distinctions, treesize of input 75413431 treesize of output 74603567 [2021-12-17 09:20:18,657 WARN L227 SmtUtils]: Spent 33.66s on a formula simplification that was a NOOP. DAG size: 5642 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 09:20:22,203 INFO L244 Elim1Store]: Index analysis took 2426 ms [2021-12-17 09:21:28,593 WARN L227 SmtUtils]: Spent 1.11m on a formula simplification. DAG size of input: 1703 DAG size of output: 1655 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-17 09:21:28,597 INFO L354 Elim1Store]: treesize reduction 222, result has 98.1 percent of original size [2021-12-17 09:21:28,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 29 select indices, 29 select index equivalence classes, 0 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 406 case distinctions, treesize of input 76357754 treesize of output 74738032 [2021-12-17 09:22:14,641 WARN L227 SmtUtils]: Spent 46.03s on a formula simplification that was a NOOP. DAG size: 6803 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 09:22:18,295 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:22:18,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 95321165 treesize of output 93595111 [2021-12-17 09:24:31,040 WARN L227 SmtUtils]: Spent 2.21m on a formula simplification. DAG size of input: 8206 DAG size of output: 8199 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 09:25:35,542 WARN L227 SmtUtils]: Spent 1.07m on a formula simplification that was a NOOP. DAG size: 8194 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 09:25:37,204 INFO L244 Elim1Store]: Index analysis took 366 ms [2021-12-17 09:25:50,211 WARN L227 SmtUtils]: Spent 12.99s on a formula simplification that was a NOOP. DAG size: 111 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-17 09:25:50,212 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:25:50,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 91097568 treesize of output 90572346 [2021-12-17 09:26:56,065 WARN L227 SmtUtils]: Spent 1.10m on a formula simplification that was a NOOP. DAG size: 8270 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 09:28:01,360 WARN L227 SmtUtils]: Spent 1.09m on a formula simplification that was a NOOP. DAG size: 8266 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-17 09:28:02,898 INFO L244 Elim1Store]: Index analysis took 256 ms [2021-12-17 09:28:15,922 WARN L227 SmtUtils]: Spent 13.00s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-17 09:28:15,922 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 09:28:15,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 90466853 treesize of output 88372127 [2021-12-17 09:29:21,007 WARN L227 SmtUtils]: Spent 1.08m on a formula simplification that was a NOOP. DAG size: 8326 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15