./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 10:31:47,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 10:31:47,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 10:31:47,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 10:31:47,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 10:31:47,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 10:31:47,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 10:31:47,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 10:31:47,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 10:31:47,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 10:31:47,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 10:31:47,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 10:31:47,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 10:31:47,289 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 10:31:47,291 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 10:31:47,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 10:31:47,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 10:31:47,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 10:31:47,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 10:31:47,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 10:31:47,306 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 10:31:47,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 10:31:47,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 10:31:47,309 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 10:31:47,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 10:31:47,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 10:31:47,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 10:31:47,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 10:31:47,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 10:31:47,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 10:31:47,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 10:31:47,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 10:31:47,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 10:31:47,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 10:31:47,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 10:31:47,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 10:31:47,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 10:31:47,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 10:31:47,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 10:31:47,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 10:31:47,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 10:31:47,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 10:31:47,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 10:31:47,361 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 10:31:47,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 10:31:47,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 10:31:47,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 10:31:47,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 10:31:47,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 10:31:47,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 10:31:47,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 10:31:47,365 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 10:31:47,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 10:31:47,366 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 10:31:47,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 10:31:47,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 10:31:47,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 10:31:47,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 10:31:47,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 10:31:47,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 10:31:47,367 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 10:31:47,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 10:31:47,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 10:31:47,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 10:31:47,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 10:31:47,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 10:31:47,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 10:31:47,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:31:47,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 10:31:47,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 10:31:47,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 10:31:47,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 10:31:47,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 10:31:47,370 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 10:31:47,370 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 10:31:47,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 10:31:47,371 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c51b17720ce1dad8733576d816f307564aabdff8c7a86cf8d9848ed8571cafd2 [2022-07-22 10:31:47,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 10:31:47,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 10:31:47,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 10:31:47,599 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 10:31:47,599 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 10:31:47,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2022-07-22 10:31:47,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d45a2d52/d216a1559b584c9a837810b543382920/FLAGc9478ac1e [2022-07-22 10:31:48,025 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 10:31:48,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c [2022-07-22 10:31:48,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d45a2d52/d216a1559b584c9a837810b543382920/FLAGc9478ac1e [2022-07-22 10:31:48,432 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d45a2d52/d216a1559b584c9a837810b543382920 [2022-07-22 10:31:48,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 10:31:48,435 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 10:31:48,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 10:31:48,439 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 10:31:48,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 10:31:48,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e28b653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48, skipping insertion in model container [2022-07-22 10:31:48,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,449 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 10:31:48,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 10:31:48,590 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c[414,427] [2022-07-22 10:31:48,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:31:48,611 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 10:31:48,626 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-cav19/array_init_var_plus_ind.c[414,427] [2022-07-22 10:31:48,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:31:48,644 INFO L208 MainTranslator]: Completed translation [2022-07-22 10:31:48,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48 WrapperNode [2022-07-22 10:31:48,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 10:31:48,646 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 10:31:48,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 10:31:48,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 10:31:48,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,673 INFO L137 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-07-22 10:31:48,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 10:31:48,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 10:31:48,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 10:31:48,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 10:31:48,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,708 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 10:31:48,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 10:31:48,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 10:31:48,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 10:31:48,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (1/1) ... [2022-07-22 10:31:48,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:31:48,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:48,744 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) [2022-07-22 10:31:48,758 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 [2022-07-22 10:31:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 10:31:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 10:31:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 10:31:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 10:31:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 10:31:48,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 10:31:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 10:31:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 10:31:48,831 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 10:31:48,832 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 10:31:48,963 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 10:31:48,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 10:31:48,970 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 10:31:48,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:31:48 BoogieIcfgContainer [2022-07-22 10:31:48,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 10:31:48,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 10:31:48,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 10:31:48,977 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 10:31:48,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:31:48" (1/3) ... [2022-07-22 10:31:48,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5a064b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:31:48, skipping insertion in model container [2022-07-22 10:31:48,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:31:48" (2/3) ... [2022-07-22 10:31:48,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b5a064b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:31:48, skipping insertion in model container [2022-07-22 10:31:48,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:31:48" (3/3) ... [2022-07-22 10:31:48,980 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind.c [2022-07-22 10:31:48,992 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 10:31:48,993 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 10:31:49,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 10:31:49,055 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ccdaf43, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31fda943 [2022-07-22 10:31:49,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 10:31:49,067 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:31:49,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 10:31:49,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:49,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:49,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:49,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:49,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1818270042, now seen corresponding path program 1 times [2022-07-22 10:31:49,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:49,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684997074] [2022-07-22 10:31:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:49,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:49,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684997074] [2022-07-22 10:31:49,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684997074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:31:49,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:31:49,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 10:31:49,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210719249] [2022-07-22 10:31:49,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:31:49,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 10:31:49,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 10:31:49,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 10:31:49,262 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-07-22 10:31:49,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:49,273 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2022-07-22 10:31:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 10:31:49,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-07-22 10:31:49,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:49,279 INFO L225 Difference]: With dead ends: 27 [2022-07-22 10:31:49,279 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 10:31:49,281 INFO L412 NwaCegarLoop]: 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 [2022-07-22 10:31:49,287 INFO L413 NwaCegarLoop]: 18 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, 18 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 [2022-07-22 10:31:49,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:31:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 10:31:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 10:31:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-07-22 10:31:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-07-22 10:31:49,312 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 7 [2022-07-22 10:31:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:49,312 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-07-22 10:31:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-07-22 10:31:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-07-22 10:31:49,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-22 10:31:49,314 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:49,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:49,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 10:31:49,315 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:49,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:49,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1808111311, now seen corresponding path program 1 times [2022-07-22 10:31:49,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:49,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337054807] [2022-07-22 10:31:49,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:49,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:49,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:49,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337054807] [2022-07-22 10:31:49,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337054807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:31:49,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:31:49,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 10:31:49,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616892035] [2022-07-22 10:31:49,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:31:49,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 10:31:49,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 10:31:49,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 10:31:49,431 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-07-22 10:31:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:49,454 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-07-22 10:31:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 10:31:49,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2022-07-22 10:31:49,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:49,455 INFO L225 Difference]: With dead ends: 29 [2022-07-22 10:31:49,456 INFO L226 Difference]: Without dead ends: 22 [2022-07-22 10:31:49,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 10:31:49,457 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:49,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 15 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:31:49,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-22 10:31:49,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 13. [2022-07-22 10:31:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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) [2022-07-22 10:31:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-07-22 10:31:49,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2022-07-22 10:31:49,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:49,462 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-07-22 10:31:49,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-07-22 10:31:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-07-22 10:31:49,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 10:31:49,463 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:49,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:49,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 10:31:49,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:49,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash 266504688, now seen corresponding path program 1 times [2022-07-22 10:31:49,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:49,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058498434] [2022-07-22 10:31:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:49,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:49,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058498434] [2022-07-22 10:31:49,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058498434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:31:49,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:31:49,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 10:31:49,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526191832] [2022-07-22 10:31:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:31:49,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 10:31:49,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:49,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 10:31:49,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 10:31:49,505 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-07-22 10:31:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:49,542 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-22 10:31:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 10:31:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2022-07-22 10:31:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:49,543 INFO L225 Difference]: With dead ends: 23 [2022-07-22 10:31:49,543 INFO L226 Difference]: Without dead ends: 15 [2022-07-22 10:31:49,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-22 10:31:49,545 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:49,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 25 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:31:49,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-22 10:31:49,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-07-22 10:31:49,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-07-22 10:31:49,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-07-22 10:31:49,551 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 8 [2022-07-22 10:31:49,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:49,551 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-07-22 10:31:49,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-07-22 10:31:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-07-22 10:31:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-22 10:31:49,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:49,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:49,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 10:31:49,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:49,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:49,553 INFO L85 PathProgramCache]: Analyzing trace with hash 53732745, now seen corresponding path program 1 times [2022-07-22 10:31:49,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:49,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718745826] [2022-07-22 10:31:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:49,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:49,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:49,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718745826] [2022-07-22 10:31:49,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718745826] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:31:49,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963919296] [2022-07-22 10:31:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:49,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:49,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:49,610 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) [2022-07-22 10:31:49,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 10:31:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:49,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 10:31:49,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:31:49,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:49,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:31:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:49,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963919296] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:31:49,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:31:49,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2022-07-22 10:31:49,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234855483] [2022-07-22 10:31:49,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:31:49,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 10:31:49,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:49,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 10:31:49,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-22 10:31:49,840 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:31:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:49,945 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2022-07-22 10:31:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 10:31:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-22 10:31:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:49,947 INFO L225 Difference]: With dead ends: 45 [2022-07-22 10:31:49,948 INFO L226 Difference]: Without dead ends: 36 [2022-07-22 10:31:49,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-07-22 10:31:49,951 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 100 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:49,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 52 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:31:49,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-07-22 10:31:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22. [2022-07-22 10:31:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 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) [2022-07-22 10:31:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-22 10:31:49,961 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2022-07-22 10:31:49,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:49,962 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-22 10:31:49,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:31:49,963 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-22 10:31:49,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-22 10:31:49,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:49,963 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:49,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 10:31:50,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:50,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:50,187 INFO L85 PathProgramCache]: Analyzing trace with hash -334334928, now seen corresponding path program 1 times [2022-07-22 10:31:50,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:50,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371265330] [2022-07-22 10:31:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:50,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:50,368 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:50,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:50,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371265330] [2022-07-22 10:31:50,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371265330] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:31:50,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325051482] [2022-07-22 10:31:50,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:50,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:50,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:50,372 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) [2022-07-22 10:31:50,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 10:31:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:50,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 10:31:50,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:31:50,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:31:50,601 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:31:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:50,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:31:50,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-07-22 10:31:50,712 INFO L390 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 32 treesize of output 28 [2022-07-22 10:31:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:50,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325051482] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:31:50,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:31:50,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 11 [2022-07-22 10:31:50,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665881166] [2022-07-22 10:31:50,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:31:50,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 10:31:50,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:50,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 10:31:50,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-22 10:31:50,768 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2022-07-22 10:31:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:50,854 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-07-22 10:31:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 10:31:50,854 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) Word has length 14 [2022-07-22 10:31:50,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:50,855 INFO L225 Difference]: With dead ends: 37 [2022-07-22 10:31:50,855 INFO L226 Difference]: Without dead ends: 35 [2022-07-22 10:31:50,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 9 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-22 10:31:50,857 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:50,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 63 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:31:50,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-22 10:31:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2022-07-22 10:31:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 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) [2022-07-22 10:31:50,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-07-22 10:31:50,862 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 14 [2022-07-22 10:31:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:50,862 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-07-22 10:31:50,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 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) [2022-07-22 10:31:50,863 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-07-22 10:31:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-22 10:31:50,863 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:50,863 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:50,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 10:31:51,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:51,086 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:51,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:51,087 INFO L85 PathProgramCache]: Analyzing trace with hash -768933834, now seen corresponding path program 2 times [2022-07-22 10:31:51,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:51,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669532700] [2022-07-22 10:31:51,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:51,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:51,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:51,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:51,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:51,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669532700] [2022-07-22 10:31:51,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669532700] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:31:51,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98751334] [2022-07-22 10:31:51,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:31:51,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:51,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:51,239 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) [2022-07-22 10:31:51,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 10:31:51,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:31:51,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:31:51,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 10:31:51,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:31:51,362 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:31:51,431 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:31:51,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:31:51,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:31:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:51,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:31:53,616 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_21| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_21|)) (forall ((v_ArrVal_48 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_21| 4)) v_ArrVal_48) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 4)))))) is different from false [2022-07-22 10:31:53,645 INFO L390 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 21 [2022-07-22 10:31:53,649 INFO L390 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 82 treesize of output 78 [2022-07-22 10:31:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-07-22 10:31:53,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98751334] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:31:53,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:31:53,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-07-22 10:31:53,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526359380] [2022-07-22 10:31:53,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:31:53,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 10:31:53,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:53,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 10:31:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=254, Unknown=1, NotChecked=32, Total=342 [2022-07-22 10:31:53,765 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:31:55,823 WARN L833 $PredicateComparison]: unable to prove that (and (<= 0 |c_ULTIMATE.start_main_~j~0#1|) (<= 1 |c_ULTIMATE.start_main_~i~0#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|)) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_21| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_21|)) (forall ((v_ArrVal_48 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_21| 4)) v_ArrVal_48) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 4)))))) (<= |c_ULTIMATE.start_main_~i~0#1| 1) (= |c_ULTIMATE.start_main_~i~0#1| 1)) is different from false [2022-07-22 10:31:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:55,991 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-07-22 10:31:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 10:31:55,991 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-22 10:31:55,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:55,992 INFO L225 Difference]: With dead ends: 43 [2022-07-22 10:31:55,992 INFO L226 Difference]: Without dead ends: 41 [2022-07-22 10:31:55,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=115, Invalid=443, Unknown=2, NotChecked=90, Total=650 [2022-07-22 10:31:55,993 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 58 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:55,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 79 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 104 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2022-07-22 10:31:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-07-22 10:31:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26. [2022-07-22 10:31:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 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) [2022-07-22 10:31:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-07-22 10:31:55,997 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 17 [2022-07-22 10:31:55,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:55,998 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-07-22 10:31:55,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:31:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-07-22 10:31:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 10:31:55,998 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:55,998 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:56,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 10:31:56,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:56,199 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:56,200 INFO L85 PathProgramCache]: Analyzing trace with hash 20881638, now seen corresponding path program 1 times [2022-07-22 10:31:56,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:56,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766947661] [2022-07-22 10:31:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:56,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:56,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766947661] [2022-07-22 10:31:56,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766947661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:31:56,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947120739] [2022-07-22 10:31:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:56,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:56,287 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) [2022-07-22 10:31:56,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 10:31:56,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:56,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 10:31:56,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:31:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:56,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:31:56,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:56,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947120739] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:31:56,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:31:56,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-07-22 10:31:56,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248540200] [2022-07-22 10:31:56,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:31:56,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 10:31:56,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:56,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 10:31:56,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-22 10:31:56,436 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) [2022-07-22 10:31:56,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:56,468 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-07-22 10:31:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 10:31:56,469 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) Word has length 18 [2022-07-22 10:31:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:56,469 INFO L225 Difference]: With dead ends: 38 [2022-07-22 10:31:56,469 INFO L226 Difference]: Without dead ends: 26 [2022-07-22 10:31:56,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-07-22 10:31:56,471 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:56,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 40 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:31:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-22 10:31:56,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-07-22 10:31:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.16) internal successors, (29), 25 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) [2022-07-22 10:31:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2022-07-22 10:31:56,480 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 18 [2022-07-22 10:31:56,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:56,480 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2022-07-22 10:31:56,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 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) [2022-07-22 10:31:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2022-07-22 10:31:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-22 10:31:56,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:56,482 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:56,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 10:31:56,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:56,705 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:56,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:56,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1429725775, now seen corresponding path program 2 times [2022-07-22 10:31:56,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:56,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927984575] [2022-07-22 10:31:56,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:56,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:56,771 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:56,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:56,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927984575] [2022-07-22 10:31:56,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927984575] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:31:56,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885182715] [2022-07-22 10:31:56,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:31:56,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:56,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:56,774 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) [2022-07-22 10:31:56,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 10:31:56,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:31:56,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:31:56,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 10:31:56,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:31:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:56,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:31:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:56,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885182715] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:31:56,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:31:56,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2022-07-22 10:31:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003696102] [2022-07-22 10:31:56,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:31:56,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 10:31:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 10:31:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2022-07-22 10:31:56,974 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 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) [2022-07-22 10:31:57,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:57,123 INFO L93 Difference]: Finished difference Result 98 states and 112 transitions. [2022-07-22 10:31:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 10:31:57,124 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 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 [2022-07-22 10:31:57,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:57,128 INFO L225 Difference]: With dead ends: 98 [2022-07-22 10:31:57,128 INFO L226 Difference]: Without dead ends: 91 [2022-07-22 10:31:57,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2022-07-22 10:31:57,129 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 234 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:57,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 102 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:31:57,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-22 10:31:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 43. [2022-07-22 10:31:57,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 42 states have internal predecessors, (51), 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) [2022-07-22 10:31:57,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2022-07-22 10:31:57,144 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 19 [2022-07-22 10:31:57,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:57,145 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2022-07-22 10:31:57,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 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) [2022-07-22 10:31:57,145 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2022-07-22 10:31:57,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-22 10:31:57,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:57,146 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:57,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 10:31:57,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:57,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:57,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:57,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1421454960, now seen corresponding path program 3 times [2022-07-22 10:31:57,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:57,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423636164] [2022-07-22 10:31:57,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:57,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:57,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:57,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423636164] [2022-07-22 10:31:57,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423636164] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:31:57,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71539905] [2022-07-22 10:31:57,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:31:57,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:57,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:57,492 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) [2022-07-22 10:31:57,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 10:31:57,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-22 10:31:57,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:31:57,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 10:31:57,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:31:57,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:31:57,614 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:31:57,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:31:57,644 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:31:57,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:31:57,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:31:57,681 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:57,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:31:57,782 INFO L390 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 19 [2022-07-22 10:31:57,786 INFO L390 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 37 treesize of output 33 [2022-07-22 10:31:57,843 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-22 10:31:57,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71539905] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:31:57,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:31:57,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 15 [2022-07-22 10:31:57,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50505142] [2022-07-22 10:31:57,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:31:57,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 10:31:57,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 10:31:57,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-22 10:31:57,847 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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) [2022-07-22 10:31:57,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:57,984 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2022-07-22 10:31:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 10:31:57,984 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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 20 [2022-07-22 10:31:57,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:57,986 INFO L225 Difference]: With dead ends: 50 [2022-07-22 10:31:57,986 INFO L226 Difference]: Without dead ends: 48 [2022-07-22 10:31:57,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 12 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-07-22 10:31:57,989 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 22 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:57,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 41 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:31:57,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-07-22 10:31:57,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-07-22 10:31:57,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 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) [2022-07-22 10:31:57,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2022-07-22 10:31:57,999 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 20 [2022-07-22 10:31:57,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:57,999 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2022-07-22 10:31:57,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 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) [2022-07-22 10:31:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2022-07-22 10:31:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-22 10:31:58,000 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:58,000 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:58,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 10:31:58,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:58,216 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:58,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:58,216 INFO L85 PathProgramCache]: Analyzing trace with hash -796542484, now seen corresponding path program 2 times [2022-07-22 10:31:58,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:58,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961365643] [2022-07-22 10:31:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:58,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:58,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:58,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961365643] [2022-07-22 10:31:58,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961365643] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:31:58,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039417237] [2022-07-22 10:31:58,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:31:58,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:58,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:58,361 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) [2022-07-22 10:31:58,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 10:31:58,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:31:58,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:31:58,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-22 10:31:58,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:31:58,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:31:58,613 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-22 10:31:58,613 INFO L390 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 23 treesize of output 10 [2022-07-22 10:31:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:58,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:31:58,774 INFO L390 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 18 treesize of output 16 [2022-07-22 10:31:58,777 INFO L390 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 38 treesize of output 32 [2022-07-22 10:31:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:58,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039417237] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:31:58,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:31:58,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2022-07-22 10:31:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463655126] [2022-07-22 10:31:58,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:31:58,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 10:31:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 10:31:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2022-07-22 10:31:58,929 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:31:59,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:31:59,027 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2022-07-22 10:31:59,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 10:31:59,028 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-22 10:31:59,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:31:59,028 INFO L225 Difference]: With dead ends: 53 [2022-07-22 10:31:59,028 INFO L226 Difference]: Without dead ends: 42 [2022-07-22 10:31:59,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2022-07-22 10:31:59,029 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 11 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:31:59,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 63 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 79 Invalid, 0 Unknown, 31 Unchecked, 0.0s Time] [2022-07-22 10:31:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-22 10:31:59,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-07-22 10:31:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 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) [2022-07-22 10:31:59,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-07-22 10:31:59,039 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2022-07-22 10:31:59,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:31:59,040 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-07-22 10:31:59,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:31:59,041 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-07-22 10:31:59,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 10:31:59,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:31:59,042 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:31:59,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-07-22 10:31:59,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:59,264 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:31:59,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:31:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash -213992666, now seen corresponding path program 3 times [2022-07-22 10:31:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:31:59,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280808768] [2022-07-22 10:31:59,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:31:59,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:31:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:31:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:59,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:31:59,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280808768] [2022-07-22 10:31:59,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280808768] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:31:59,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944997715] [2022-07-22 10:31:59,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:31:59,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:31:59,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:31:59,454 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) [2022-07-22 10:31:59,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 10:31:59,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-07-22 10:31:59,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:31:59,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 10:31:59,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:31:59,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:31:59,589 INFO L356 Elim1Store]: treesize reduction 40, result has 23.1 percent of original size [2022-07-22 10:31:59,589 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 27 [2022-07-22 10:31:59,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:31:59,657 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:59,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:31:59,763 INFO L390 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 24 treesize of output 22 [2022-07-22 10:31:59,765 INFO L390 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 192 treesize of output 184 [2022-07-22 10:31:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:31:59,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944997715] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:31:59,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:31:59,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 24 [2022-07-22 10:31:59,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618262039] [2022-07-22 10:31:59,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:31:59,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 10:31:59,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:31:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 10:31:59,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2022-07-22 10:31:59,917 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 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) [2022-07-22 10:32:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:32:00,058 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2022-07-22 10:32:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 10:32:00,058 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 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 24 [2022-07-22 10:32:00,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:32:00,059 INFO L225 Difference]: With dead ends: 54 [2022-07-22 10:32:00,059 INFO L226 Difference]: Without dead ends: 52 [2022-07-22 10:32:00,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 30 SyntacticMatches, 8 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2022-07-22 10:32:00,060 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 18 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:32:00,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 113 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 26 Unchecked, 0.1s Time] [2022-07-22 10:32:00,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-07-22 10:32:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2022-07-22 10:32:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.173913043478261) internal successors, (54), 46 states have internal predecessors, (54), 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) [2022-07-22 10:32:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2022-07-22 10:32:00,068 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 24 [2022-07-22 10:32:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:32:00,068 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2022-07-22 10:32:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 24 states have internal predecessors, (54), 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) [2022-07-22 10:32:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2022-07-22 10:32:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 10:32:00,069 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:32:00,069 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:32:00,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-22 10:32:00,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 10:32:00,282 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:32:00,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:32:00,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1435207764, now seen corresponding path program 4 times [2022-07-22 10:32:00,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:32:00,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869240520] [2022-07-22 10:32:00,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:32:00,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:32:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:32:00,486 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:00,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:32:00,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869240520] [2022-07-22 10:32:00,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869240520] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:32:00,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114490762] [2022-07-22 10:32:00,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 10:32:00,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:00,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:32:00,488 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) [2022-07-22 10:32:00,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 10:32:00,535 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 10:32:00,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:32:00,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-22 10:32:00,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:32:00,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:32:00,613 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:32:00,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:32:00,648 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:32:00,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:32:00,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:32:00,727 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:00,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:32:02,829 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (forall ((v_ArrVal_178 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_178) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_66|)))) is different from false [2022-07-22 10:32:09,042 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_67|)) (forall ((v_ArrVal_178 Int) (v_ArrVal_175 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_175) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_178) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8))))))) is different from false [2022-07-22 10:32:09,063 INFO L390 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 30 treesize of output 28 [2022-07-22 10:32:09,069 INFO L390 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 3242 treesize of output 3178 [2022-07-22 10:32:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-07-22 10:32:11,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114490762] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:32:11,053 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:32:11,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 14] total 27 [2022-07-22 10:32:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19851782] [2022-07-22 10:32:11,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:32:11,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 10:32:11,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:32:11,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 10:32:11,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=509, Unknown=12, NotChecked=94, Total=702 [2022-07-22 10:32:11,055 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 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) [2022-07-22 10:32:13,099 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_67| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_67|)) (forall ((v_ArrVal_178 Int) (v_ArrVal_175 Int) (|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |v_ULTIMATE.start_main_~i~0#1_66|)) (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_175) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_178) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8))))))) (<= 1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (<= |c_ULTIMATE.start_main_~i~0#1| 2) (<= 1 |c_ULTIMATE.start_main_~j~0#1|)) is different from false [2022-07-22 10:32:15,116 WARN L833 $PredicateComparison]: unable to prove that (and (<= 3 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (forall ((v_ArrVal_178 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_178) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_66|)))) (<= 1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8)))) is different from false [2022-07-22 10:32:17,132 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_66| Int)) (or (forall ((v_ArrVal_178 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_66| 4)) v_ArrVal_178) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_66|)))) (<= 4 |c_ULTIMATE.start_main_~i~0#1|) (<= 1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8)))) is different from false [2022-07-22 10:32:17,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:32:17,252 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2022-07-22 10:32:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 10:32:17,252 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-22 10:32:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:32:17,253 INFO L225 Difference]: With dead ends: 58 [2022-07-22 10:32:17,253 INFO L226 Difference]: Without dead ends: 56 [2022-07-22 10:32:17,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=171, Invalid=764, Unknown=15, NotChecked=310, Total=1260 [2022-07-22 10:32:17,254 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:32:17,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 80 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 216 Invalid, 0 Unknown, 72 Unchecked, 0.1s Time] [2022-07-22 10:32:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-22 10:32:17,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2022-07-22 10:32:17,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:32:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-07-22 10:32:17,259 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 27 [2022-07-22 10:32:17,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:32:17,259 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-07-22 10:32:17,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 27 states have internal predecessors, (60), 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) [2022-07-22 10:32:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-07-22 10:32:17,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 10:32:17,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:32:17,260 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-22 10:32:17,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 10:32:17,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:17,461 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:32:17,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:32:17,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2053274844, now seen corresponding path program 5 times [2022-07-22 10:32:17,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:32:17,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624554862] [2022-07-22 10:32:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:32:17,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:32:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:32:17,743 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:17,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:32:17,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624554862] [2022-07-22 10:32:17,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624554862] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:32:17,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478577066] [2022-07-22 10:32:17,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 10:32:17,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:17,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:32:17,748 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) [2022-07-22 10:32:17,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 10:32:17,797 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-22 10:32:17,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:32:17,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-22 10:32:17,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:32:17,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 10:32:18,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:32:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:18,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:32:18,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-07-22 10:32:18,137 INFO L390 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 32 treesize of output 28 [2022-07-22 10:32:18,326 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:18,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478577066] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:32:18,326 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:32:18,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 36 [2022-07-22 10:32:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052137369] [2022-07-22 10:32:18,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:32:18,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-22 10:32:18,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:32:18,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-22 10:32:18,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-07-22 10:32:18,328 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 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) [2022-07-22 10:32:18,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:32:18,679 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2022-07-22 10:32:18,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 10:32:18,680 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-22 10:32:18,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:32:18,680 INFO L225 Difference]: With dead ends: 62 [2022-07-22 10:32:18,680 INFO L226 Difference]: Without dead ends: 46 [2022-07-22 10:32:18,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=198, Invalid=1608, Unknown=0, NotChecked=0, Total=1806 [2022-07-22 10:32:18,682 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 38 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 10:32:18,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 173 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 292 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2022-07-22 10:32:18,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-22 10:32:18,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-07-22 10:32:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:32:18,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-07-22 10:32:18,687 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 28 [2022-07-22 10:32:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:32:18,687 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-07-22 10:32:18,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 36 states have internal predecessors, (79), 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) [2022-07-22 10:32:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-07-22 10:32:18,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-22 10:32:18,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:32:18,688 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-22 10:32:18,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-07-22 10:32:18,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 10:32:18,899 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:32:18,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:32:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash -272988574, now seen corresponding path program 6 times [2022-07-22 10:32:18,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:32:18,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112318943] [2022-07-22 10:32:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:32:18,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:32:18,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:32:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:32:19,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112318943] [2022-07-22 10:32:19,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112318943] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:32:19,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973016655] [2022-07-22 10:32:19,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 10:32:19,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:19,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:32:19,130 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:32:19,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 10:32:19,200 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-07-22 10:32:19,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:32:19,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-22 10:32:19,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:32:19,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:32:19,389 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:32:19,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:32:19,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:32:19,515 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:19,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:32:21,665 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_84| Int)) (or (forall ((v_ArrVal_227 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_84| 4)) v_ArrVal_227) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 12)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_84|)))) is different from false [2022-07-22 10:32:21,680 INFO L390 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 21 [2022-07-22 10:32:21,683 INFO L390 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 82 treesize of output 78 [2022-07-22 10:32:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2022-07-22 10:32:21,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973016655] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:32:21,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:32:21,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 41 [2022-07-22 10:32:21,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659025018] [2022-07-22 10:32:21,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:32:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-07-22 10:32:21,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:32:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-07-22 10:32:21,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1405, Unknown=1, NotChecked=76, Total=1640 [2022-07-22 10:32:21,882 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 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) [2022-07-22 10:32:23,947 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (and (= (+ .cse0 |c_ULTIMATE.start_main_~#a~0#1.offset| (- 12)) 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_84| Int)) (or (forall ((v_ArrVal_227 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_84| 4)) v_ArrVal_227) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 12)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_84|)))) (= |c_ULTIMATE.start_main_~#a~0#1.offset| 0) (<= 3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#a~0#1.offset|))))) is different from false [2022-07-22 10:32:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:32:24,262 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2022-07-22 10:32:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-22 10:32:24,262 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 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 31 [2022-07-22 10:32:24,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:32:24,263 INFO L225 Difference]: With dead ends: 55 [2022-07-22 10:32:24,263 INFO L226 Difference]: Without dead ends: 53 [2022-07-22 10:32:24,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=275, Invalid=2083, Unknown=2, NotChecked=190, Total=2550 [2022-07-22 10:32:24,264 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 45 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:32:24,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 174 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 337 Invalid, 0 Unknown, 139 Unchecked, 0.1s Time] [2022-07-22 10:32:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-22 10:32:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2022-07-22 10:32:24,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 49 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:32:24,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2022-07-22 10:32:24,270 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 31 [2022-07-22 10:32:24,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:32:24,270 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2022-07-22 10:32:24,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 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) [2022-07-22 10:32:24,270 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2022-07-22 10:32:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 10:32:24,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:32:24,271 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-07-22 10:32:24,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 10:32:24,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 10:32:24,488 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:32:24,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:32:24,488 INFO L85 PathProgramCache]: Analyzing trace with hash -246527464, now seen corresponding path program 7 times [2022-07-22 10:32:24,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:32:24,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724832050] [2022-07-22 10:32:24,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:32:24,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:32:24,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:32:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:24,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:32:24,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724832050] [2022-07-22 10:32:24,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724832050] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:32:24,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534767146] [2022-07-22 10:32:24,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 10:32:24,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:24,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:32:24,710 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:32:24,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 10:32:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:32:24,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 10:32:24,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:32:24,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 10:32:25,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:32:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:25,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:32:25,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-07-22 10:32:25,268 INFO L390 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 32 treesize of output 28 [2022-07-22 10:32:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:25,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534767146] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:32:25,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:32:25,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 44 [2022-07-22 10:32:25,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713443800] [2022-07-22 10:32:25,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:32:25,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-22 10:32:25,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:32:25,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-22 10:32:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1731, Unknown=0, NotChecked=0, Total=1892 [2022-07-22 10:32:25,574 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 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) [2022-07-22 10:32:26,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:32:26,167 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2022-07-22 10:32:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 10:32:26,168 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 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 35 [2022-07-22 10:32:26,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:32:26,169 INFO L225 Difference]: With dead ends: 73 [2022-07-22 10:32:26,169 INFO L226 Difference]: Without dead ends: 50 [2022-07-22 10:32:26,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 41 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=283, Invalid=2797, Unknown=0, NotChecked=0, Total=3080 [2022-07-22 10:32:26,170 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:32:26,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 331 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 605 Invalid, 0 Unknown, 153 Unchecked, 0.3s Time] [2022-07-22 10:32:26,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-07-22 10:32:26,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-07-22 10:32:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 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) [2022-07-22 10:32:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2022-07-22 10:32:26,176 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 35 [2022-07-22 10:32:26,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:32:26,176 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2022-07-22 10:32:26,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.272727272727273) internal successors, (100), 44 states have internal predecessors, (100), 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) [2022-07-22 10:32:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2022-07-22 10:32:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 10:32:26,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:32:26,177 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-07-22 10:32:26,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 10:32:26,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 10:32:26,377 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:32:26,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:32:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1821925934, now seen corresponding path program 8 times [2022-07-22 10:32:26,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:32:26,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069409543] [2022-07-22 10:32:26,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:32:26,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:32:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:32:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:32:26,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069409543] [2022-07-22 10:32:26,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069409543] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:32:26,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256059485] [2022-07-22 10:32:26,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:32:26,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:26,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:32:26,619 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:32:26,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 10:32:26,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:32:26,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:32:26,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-22 10:32:26,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:32:26,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:32:26,783 INFO L356 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-07-22 10:32:26,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-07-22 10:32:26,896 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:32:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:26,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:32:29,070 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_105| Int)) (or (forall ((v_ArrVal_286 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_105| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_286) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_105|)))) is different from false [2022-07-22 10:32:29,075 INFO L390 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 21 [2022-07-22 10:32:29,078 INFO L390 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 82 treesize of output 78 [2022-07-22 10:32:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-07-22 10:32:29,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256059485] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:32:29,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:32:29,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 39 [2022-07-22 10:32:29,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871594946] [2022-07-22 10:32:29,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:32:29,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-22 10:32:29,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:32:29,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-22 10:32:29,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1282, Unknown=1, NotChecked=72, Total=1482 [2022-07-22 10:32:29,311 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 39 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 39 states have internal predecessors, (90), 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) [2022-07-22 10:32:31,442 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~i~0#1| 4) (<= 6 |c_ULTIMATE.start_main_~j~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_105| Int)) (or (forall ((v_ArrVal_286 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_105| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_286) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_105|)))) (<= 4 |c_ULTIMATE.start_main_~i~0#1|) (<= 6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|)))) is different from false [2022-07-22 10:32:31,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:32:31,666 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2022-07-22 10:32:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 10:32:31,667 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 39 states have internal predecessors, (90), 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 38 [2022-07-22 10:32:31,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:32:31,667 INFO L225 Difference]: With dead ends: 76 [2022-07-22 10:32:31,667 INFO L226 Difference]: Without dead ends: 74 [2022-07-22 10:32:31,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=190, Invalid=1796, Unknown=2, NotChecked=174, Total=2162 [2022-07-22 10:32:31,668 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 10:32:31,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 306 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 500 Invalid, 0 Unknown, 71 Unchecked, 0.2s Time] [2022-07-22 10:32:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-22 10:32:31,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2022-07-22 10:32:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 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) [2022-07-22 10:32:31,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2022-07-22 10:32:31,675 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 38 [2022-07-22 10:32:31,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:32:31,675 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2022-07-22 10:32:31,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.3076923076923075) internal successors, (90), 39 states have internal predecessors, (90), 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) [2022-07-22 10:32:31,675 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2022-07-22 10:32:31,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 10:32:31,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:32:31,676 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-07-22 10:32:31,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 10:32:31,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 10:32:31,887 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:32:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:32:31,888 INFO L85 PathProgramCache]: Analyzing trace with hash 884864984, now seen corresponding path program 9 times [2022-07-22 10:32:31,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:32:31,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136061657] [2022-07-22 10:32:31,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:32:31,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:32:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:32:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:32,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:32:32,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136061657] [2022-07-22 10:32:32,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136061657] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:32:32,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519004163] [2022-07-22 10:32:32,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:32:32,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:32,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:32:32,127 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:32:32,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 10:32:32,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-07-22 10:32:32,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:32:32,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-22 10:32:32,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:32:32,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:32:32,318 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:32:32,318 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:32:32,346 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:32:32,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:32:32,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:32:32,461 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 2 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:32,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:32:34,596 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_118| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_118|)) (forall ((v_ArrVal_324 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_118| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_324) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16)))))) is different from false [2022-07-22 10:32:45,165 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_119| Int)) (or (forall ((v_ArrVal_324 Int) (v_ArrVal_322 Int) (|v_ULTIMATE.start_main_~i~0#1_118| Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_119| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_322) (+ (* |v_ULTIMATE.start_main_~i~0#1_118| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_324) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_119| 1) |v_ULTIMATE.start_main_~i~0#1_118|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_119|)))) is different from false [2022-07-22 10:32:45,173 INFO L390 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 30 treesize of output 28 [2022-07-22 10:32:45,176 INFO L390 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 794 treesize of output 778 [2022-07-22 10:32:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2022-07-22 10:32:45,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519004163] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:32:45,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:32:45,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 42 [2022-07-22 10:32:45,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740303778] [2022-07-22 10:32:45,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:32:45,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-22 10:32:45,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:32:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-22 10:32:45,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1403, Unknown=23, NotChecked=154, Total=1722 [2022-07-22 10:32:45,657 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand has 42 states, 42 states have (on average 2.2857142857142856) internal successors, (96), 42 states have internal predecessors, (96), 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) [2022-07-22 10:32:47,750 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_119| Int)) (or (forall ((v_ArrVal_324 Int) (v_ArrVal_322 Int) (|v_ULTIMATE.start_main_~i~0#1_118| Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_119| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_322) (+ (* |v_ULTIMATE.start_main_~i~0#1_118| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_324) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_119| 1) |v_ULTIMATE.start_main_~i~0#1_118|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_119|)))) (<= |c_ULTIMATE.start_main_~i~0#1| 4) (<= 6 |c_ULTIMATE.start_main_~j~0#1|) (<= 4 |c_ULTIMATE.start_main_~i~0#1|) (<= 6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|)))) is different from false [2022-07-22 10:32:49,773 WARN L833 $PredicateComparison]: unable to prove that (and (<= 5 |c_ULTIMATE.start_main_~i~0#1|) (<= 6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16))) (forall ((|v_ULTIMATE.start_main_~i~0#1_118| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_118|)) (forall ((v_ArrVal_324 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_118| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_324) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16))))))) is different from false [2022-07-22 10:32:51,791 WARN L833 $PredicateComparison]: unable to prove that (and (<= 6 |c_ULTIMATE.start_main_~i~0#1|) (<= 6 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16))) (forall ((|v_ULTIMATE.start_main_~i~0#1_118| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_118|)) (forall ((v_ArrVal_324 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_118| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_324) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16))))))) is different from false [2022-07-22 10:32:52,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:32:52,043 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2022-07-22 10:32:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 10:32:52,043 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.2857142857142856) internal successors, (96), 42 states have internal predecessors, (96), 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 41 [2022-07-22 10:32:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:32:52,044 INFO L225 Difference]: With dead ends: 74 [2022-07-22 10:32:52,044 INFO L226 Difference]: Without dead ends: 72 [2022-07-22 10:32:52,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 54 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=280, Invalid=2164, Unknown=26, NotChecked=500, Total=2970 [2022-07-22 10:32:52,045 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 78 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 10:32:52,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 191 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 525 Invalid, 0 Unknown, 86 Unchecked, 0.2s Time] [2022-07-22 10:32:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-07-22 10:32:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2022-07-22 10:32:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 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) [2022-07-22 10:32:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2022-07-22 10:32:52,054 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 41 [2022-07-22 10:32:52,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:32:52,055 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2022-07-22 10:32:52,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.2857142857142856) internal successors, (96), 42 states have internal predecessors, (96), 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) [2022-07-22 10:32:52,056 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2022-07-22 10:32:52,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 10:32:52,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:32:52,059 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-07-22 10:32:52,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-22 10:32:52,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:52,267 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:32:52,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:32:52,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1086466440, now seen corresponding path program 10 times [2022-07-22 10:32:52,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:32:52,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354391321] [2022-07-22 10:32:52,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:32:52,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:32:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:32:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:52,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:32:52,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354391321] [2022-07-22 10:32:52,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354391321] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:32:52,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710444283] [2022-07-22 10:32:52,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 10:32:52,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:52,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:32:52,538 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:32:52,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 10:32:52,589 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 10:32:52,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:32:52,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-22 10:32:52,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:32:52,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 10:32:52,969 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:32:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:52,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:32:53,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-07-22 10:32:53,172 INFO L390 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 32 treesize of output 28 [2022-07-22 10:32:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:53,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710444283] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:32:53,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:32:53,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 53 [2022-07-22 10:32:53,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934751923] [2022-07-22 10:32:53,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:32:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-22 10:32:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:32:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-22 10:32:53,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=2557, Unknown=0, NotChecked=0, Total=2756 [2022-07-22 10:32:53,574 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 53 states have internal predecessors, (121), 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) [2022-07-22 10:32:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:32:54,343 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2022-07-22 10:32:54,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 10:32:54,343 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 53 states have internal predecessors, (121), 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 42 [2022-07-22 10:32:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:32:54,343 INFO L225 Difference]: With dead ends: 81 [2022-07-22 10:32:54,344 INFO L226 Difference]: Without dead ends: 54 [2022-07-22 10:32:54,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 967 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=356, Invalid=4066, Unknown=0, NotChecked=0, Total=4422 [2022-07-22 10:32:54,345 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 49 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:32:54,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 382 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 836 Invalid, 0 Unknown, 301 Unchecked, 0.3s Time] [2022-07-22 10:32:54,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-07-22 10:32:54,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-07-22 10:32:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 53 states have internal predecessors, (58), 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) [2022-07-22 10:32:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2022-07-22 10:32:54,351 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 42 [2022-07-22 10:32:54,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:32:54,352 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2022-07-22 10:32:54,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2830188679245285) internal successors, (121), 53 states have internal predecessors, (121), 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) [2022-07-22 10:32:54,352 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2022-07-22 10:32:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-22 10:32:54,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:32:54,352 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-07-22 10:32:54,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 10:32:54,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-22 10:32:54,553 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:32:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:32:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1001394318, now seen corresponding path program 11 times [2022-07-22 10:32:54,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:32:54,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41448702] [2022-07-22 10:32:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:32:54,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:32:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:32:54,872 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:54,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:32:54,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41448702] [2022-07-22 10:32:54,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41448702] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:32:54,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917474216] [2022-07-22 10:32:54,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 10:32:54,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:32:54,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:32:54,874 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:32:54,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 10:32:54,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-07-22 10:32:54,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:32:54,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-22 10:32:54,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:32:55,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:32:55,102 INFO L356 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-07-22 10:32:55,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-07-22 10:32:55,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:32:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:32:55,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:32:57,451 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_144| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_144|)) (forall ((v_ArrVal_389 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_144| 4)) v_ArrVal_389) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20)))))) is different from false [2022-07-22 10:32:57,456 INFO L390 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 21 [2022-07-22 10:32:57,460 INFO L390 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 186 treesize of output 178 [2022-07-22 10:32:57,782 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-07-22 10:32:57,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917474216] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:32:57,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:32:57,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 46 [2022-07-22 10:32:57,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362438478] [2022-07-22 10:32:57,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:32:57,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-22 10:32:57,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:32:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-22 10:32:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1831, Unknown=1, NotChecked=86, Total=2070 [2022-07-22 10:32:57,784 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 46 states have internal predecessors, (108), 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) [2022-07-22 10:32:59,953 WARN L833 $PredicateComparison]: unable to prove that (and (<= 5 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_144| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_144|)) (forall ((v_ArrVal_389 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_144| 4)) v_ArrVal_389) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20)))))) (<= 10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= 10 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~i~0#1| 5)) is different from false [2022-07-22 10:33:00,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:33:00,202 INFO L93 Difference]: Finished difference Result 84 states and 88 transitions. [2022-07-22 10:33:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 10:33:00,202 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 46 states have internal predecessors, (108), 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 45 [2022-07-22 10:33:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:33:00,203 INFO L225 Difference]: With dead ends: 84 [2022-07-22 10:33:00,203 INFO L226 Difference]: Without dead ends: 82 [2022-07-22 10:33:00,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=222, Invalid=2540, Unknown=2, NotChecked=206, Total=2970 [2022-07-22 10:33:00,205 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:33:00,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 401 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 728 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2022-07-22 10:33:00,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-07-22 10:33:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2022-07-22 10:33:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:33:00,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2022-07-22 10:33:00,212 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 45 [2022-07-22 10:33:00,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:33:00,212 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2022-07-22 10:33:00,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.347826086956522) internal successors, (108), 46 states have internal predecessors, (108), 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) [2022-07-22 10:33:00,213 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2022-07-22 10:33:00,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-22 10:33:00,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:33:00,213 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2022-07-22 10:33:00,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 10:33:00,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:00,419 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:33:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:33:00,420 INFO L85 PathProgramCache]: Analyzing trace with hash 648512456, now seen corresponding path program 12 times [2022-07-22 10:33:00,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:33:00,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750975702] [2022-07-22 10:33:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:00,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:33:00,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:00,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:33:00,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750975702] [2022-07-22 10:33:00,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750975702] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:33:00,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933931869] [2022-07-22 10:33:00,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 10:33:00,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:00,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:33:00,706 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:33:00,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 10:33:00,819 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-07-22 10:33:00,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:33:00,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 41 conjunts are in the unsatisfiable core [2022-07-22 10:33:00,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:33:00,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:33:00,911 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:33:00,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:33:00,942 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:33:00,942 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:33:01,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:33:01,092 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 2 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:01,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:33:03,267 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_159| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_159|)) (forall ((v_ArrVal_432 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_159| 4)) v_ArrVal_432) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20)))))) is different from false [2022-07-22 10:33:15,444 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_160| Int)) (or (forall ((v_ArrVal_432 Int) (|v_ULTIMATE.start_main_~i~0#1_159| Int) (v_ArrVal_429 Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_160| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_429) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_159| 4)) v_ArrVal_432) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_160| 1) |v_ULTIMATE.start_main_~i~0#1_159|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_160|)))) is different from false [2022-07-22 10:33:15,451 INFO L390 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 30 treesize of output 28 [2022-07-22 10:33:15,454 INFO L390 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 386 treesize of output 378 [2022-07-22 10:33:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2022-07-22 10:33:15,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933931869] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:33:15,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:33:15,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 23] total 49 [2022-07-22 10:33:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848737751] [2022-07-22 10:33:15,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:33:15,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-22 10:33:15,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:33:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-22 10:33:15,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1976, Unknown=27, NotChecked=182, Total=2352 [2022-07-22 10:33:15,844 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 49 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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) [2022-07-22 10:33:18,032 WARN L833 $PredicateComparison]: unable to prove that (and (<= 5 |c_ULTIMATE.start_main_~i~0#1|) (<= 10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= 10 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~i~0#1| 5) (forall ((|v_ULTIMATE.start_main_~i~0#1_160| Int)) (or (forall ((v_ArrVal_432 Int) (|v_ULTIMATE.start_main_~i~0#1_159| Int) (v_ArrVal_429 Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_160| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_429) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_159| 4)) v_ArrVal_432) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_160| 1) |v_ULTIMATE.start_main_~i~0#1_159|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_160|))))) is different from false [2022-07-22 10:33:20,053 WARN L833 $PredicateComparison]: unable to prove that (and (<= 6 |c_ULTIMATE.start_main_~i~0#1|) (<= 10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20))) (forall ((|v_ULTIMATE.start_main_~i~0#1_159| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_159|)) (forall ((v_ArrVal_432 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_159| 4)) v_ArrVal_432) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20))))))) is different from false [2022-07-22 10:33:20,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:33:20,396 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2022-07-22 10:33:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-22 10:33:20,396 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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 48 [2022-07-22 10:33:20,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:33:20,397 INFO L225 Difference]: With dead ends: 82 [2022-07-22 10:33:20,397 INFO L226 Difference]: Without dead ends: 80 [2022-07-22 10:33:20,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 64 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 798 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=330, Invalid=3079, Unknown=29, NotChecked=468, Total=3906 [2022-07-22 10:33:20,398 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 58 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:33:20,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 308 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 840 Invalid, 0 Unknown, 102 Unchecked, 0.3s Time] [2022-07-22 10:33:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-07-22 10:33:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 58. [2022-07-22 10:33:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.087719298245614) internal successors, (62), 57 states have internal predecessors, (62), 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) [2022-07-22 10:33:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-07-22 10:33:20,404 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 48 [2022-07-22 10:33:20,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:33:20,404 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-07-22 10:33:20,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.326530612244898) internal successors, (114), 49 states have internal predecessors, (114), 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) [2022-07-22 10:33:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-07-22 10:33:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-22 10:33:20,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:33:20,405 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-07-22 10:33:20,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-22 10:33:20,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:20,605 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:33:20,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:33:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash -707076540, now seen corresponding path program 13 times [2022-07-22 10:33:20,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:33:20,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707467388] [2022-07-22 10:33:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:20,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:33:20,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:20,924 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:20,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:33:20,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707467388] [2022-07-22 10:33:20,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707467388] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:33:20,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51787821] [2022-07-22 10:33:20,925 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 10:33:20,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:20,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:33:20,926 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:33:20,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-22 10:33:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:20,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-22 10:33:20,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:33:21,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:33:21,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:33:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:21,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:33:21,420 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-07-22 10:33:21,422 INFO L390 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 32 treesize of output 28 [2022-07-22 10:33:21,828 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:21,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51787821] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:33:21,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:33:21,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 49 [2022-07-22 10:33:21,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406414756] [2022-07-22 10:33:21,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:33:21,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-22 10:33:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:33:21,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-22 10:33:21,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2191, Unknown=0, NotChecked=0, Total=2352 [2022-07-22 10:33:21,830 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 49 states, 49 states have (on average 2.4285714285714284) internal successors, (119), 49 states have internal predecessors, (119), 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) [2022-07-22 10:33:22,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:33:22,255 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2022-07-22 10:33:22,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 10:33:22,256 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4285714285714284) internal successors, (119), 49 states have internal predecessors, (119), 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 49 [2022-07-22 10:33:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:33:22,256 INFO L225 Difference]: With dead ends: 92 [2022-07-22 10:33:22,256 INFO L226 Difference]: Without dead ends: 90 [2022-07-22 10:33:22,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=238, Invalid=3068, Unknown=0, NotChecked=0, Total=3306 [2022-07-22 10:33:22,258 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 35 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 10:33:22,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 410 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 585 Invalid, 0 Unknown, 296 Unchecked, 0.2s Time] [2022-07-22 10:33:22,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-22 10:33:22,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 63. [2022-07-22 10:33:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 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) [2022-07-22 10:33:22,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-07-22 10:33:22,264 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 49 [2022-07-22 10:33:22,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:33:22,265 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-07-22 10:33:22,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4285714285714284) internal successors, (119), 49 states have internal predecessors, (119), 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) [2022-07-22 10:33:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-07-22 10:33:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 10:33:22,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:33:22,266 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-07-22 10:33:22,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-22 10:33:22,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:22,466 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:33:22,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:33:22,467 INFO L85 PathProgramCache]: Analyzing trace with hash -988666754, now seen corresponding path program 14 times [2022-07-22 10:33:22,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:33:22,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609256602] [2022-07-22 10:33:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:22,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:33:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:22,841 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:22,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:33:22,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609256602] [2022-07-22 10:33:22,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609256602] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:33:22,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803009719] [2022-07-22 10:33:22,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:33:22,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:22,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:33:22,843 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:33:22,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-22 10:33:22,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:33:22,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:33:22,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-22 10:33:22,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:33:22,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:33:23,026 INFO L356 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-07-22 10:33:23,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-07-22 10:33:23,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:33:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:23,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:33:25,440 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_189| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_189|)) (forall ((v_ArrVal_506 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_189| 4)) v_ArrVal_506) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 24)))))) is different from false [2022-07-22 10:33:25,446 INFO L390 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 21 [2022-07-22 10:33:25,448 INFO L390 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 82 treesize of output 78 [2022-07-22 10:33:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-07-22 10:33:25,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803009719] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:33:25,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:33:25,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 53 [2022-07-22 10:33:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465729606] [2022-07-22 10:33:25,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:33:25,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-22 10:33:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:33:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-22 10:33:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2478, Unknown=1, NotChecked=100, Total=2756 [2022-07-22 10:33:25,857 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 53 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 53 states have internal predecessors, (126), 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) [2022-07-22 10:33:28,011 WARN L833 $PredicateComparison]: unable to prove that (and (<= 6 |c_ULTIMATE.start_main_~i~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_189| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_189|)) (forall ((v_ArrVal_506 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_189| 4)) v_ArrVal_506) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 24)))))) (<= 15 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= |c_ULTIMATE.start_main_~i~0#1| 6)) is different from false [2022-07-22 10:33:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:33:28,319 INFO L93 Difference]: Finished difference Result 115 states and 119 transitions. [2022-07-22 10:33:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-22 10:33:28,321 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 53 states have internal predecessors, (126), 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 52 [2022-07-22 10:33:28,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:33:28,321 INFO L225 Difference]: With dead ends: 115 [2022-07-22 10:33:28,321 INFO L226 Difference]: Without dead ends: 113 [2022-07-22 10:33:28,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 69 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=265, Invalid=3523, Unknown=2, NotChecked=242, Total=4032 [2022-07-22 10:33:28,323 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 46 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 10:33:28,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 471 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 707 Invalid, 0 Unknown, 320 Unchecked, 0.2s Time] [2022-07-22 10:33:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-07-22 10:33:28,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 63. [2022-07-22 10:33:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.0806451612903225) internal successors, (67), 62 states have internal predecessors, (67), 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) [2022-07-22 10:33:28,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2022-07-22 10:33:28,333 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 52 [2022-07-22 10:33:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:33:28,334 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2022-07-22 10:33:28,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.3773584905660377) internal successors, (126), 53 states have internal predecessors, (126), 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) [2022-07-22 10:33:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2022-07-22 10:33:28,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 10:33:28,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:33:28,335 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2022-07-22 10:33:28,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-22 10:33:28,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:28,555 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:33:28,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:33:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1646534406, now seen corresponding path program 15 times [2022-07-22 10:33:28,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:33:28,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24544397] [2022-07-22 10:33:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:33:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:28,686 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 51 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:28,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:33:28,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24544397] [2022-07-22 10:33:28,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24544397] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:33:28,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858655501] [2022-07-22 10:33:28,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:33:28,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:28,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:33:28,688 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:33:28,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-22 10:33:28,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-07-22 10:33:28,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:33:28,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-22 10:33:28,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:33:28,953 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 72 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:28,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:33:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 72 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:29,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858655501] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:33:29,011 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:33:29,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2022-07-22 10:33:29,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379530341] [2022-07-22 10:33:29,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:33:29,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-22 10:33:29,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:33:29,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-22 10:33:29,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-07-22 10:33:29,012 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 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) [2022-07-22 10:33:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:33:29,080 INFO L93 Difference]: Finished difference Result 95 states and 99 transitions. [2022-07-22 10:33:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 10:33:29,081 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 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 53 [2022-07-22 10:33:29,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:33:29,081 INFO L225 Difference]: With dead ends: 95 [2022-07-22 10:33:29,081 INFO L226 Difference]: Without dead ends: 63 [2022-07-22 10:33:29,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=485, Unknown=0, NotChecked=0, Total=650 [2022-07-22 10:33:29,082 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:33:29,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 112 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:33:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-07-22 10:33:29,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-07-22 10:33:29,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.064516129032258) internal successors, (66), 62 states have internal predecessors, (66), 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) [2022-07-22 10:33:29,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2022-07-22 10:33:29,091 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 53 [2022-07-22 10:33:29,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:33:29,091 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2022-07-22 10:33:29,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 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) [2022-07-22 10:33:29,091 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2022-07-22 10:33:29,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 10:33:29,092 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:33:29,092 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-07-22 10:33:29,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-22 10:33:29,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-22 10:33:29,292 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:33:29,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:33:29,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1771602940, now seen corresponding path program 16 times [2022-07-22 10:33:29,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:33:29,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000528678] [2022-07-22 10:33:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:33:29,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:33:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:33:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:29,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:33:29,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000528678] [2022-07-22 10:33:29,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000528678] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:33:29,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224717197] [2022-07-22 10:33:29,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 10:33:29,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:33:29,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:33:29,712 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:33:29,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-22 10:33:29,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 10:33:29,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:33:29,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-22 10:33:29,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:33:29,862 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:33:29,900 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:33:29,900 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:33:29,934 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:33:29,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:33:30,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:33:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 2 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:33:30,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:34:29,388 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_222| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_222|)) (forall ((v_ArrVal_583 Int) (v_ArrVal_581 Int) (|v_ULTIMATE.start_main_~i~0#1_221| Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_222| 4)) v_ArrVal_581) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_221| 4)) v_ArrVal_583) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 24))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_222| 1) |v_ULTIMATE.start_main_~i~0#1_221|)))))) is different from false [2022-07-22 10:34:29,399 INFO L390 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 30 treesize of output 28 [2022-07-22 10:34:29,402 INFO L390 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 182 treesize of output 178 [2022-07-22 10:34:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 168 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-07-22 10:34:29,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224717197] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:34:29,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:34:29,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 56 [2022-07-22 10:34:29,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271142407] [2022-07-22 10:34:29,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:34:29,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-22 10:34:29,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:34:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-22 10:34:29,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2724, Unknown=54, NotChecked=106, Total=3080 [2022-07-22 10:34:29,837 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 56 states, 56 states have (on average 2.357142857142857) internal successors, (132), 56 states have internal predecessors, (132), 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) [2022-07-22 10:34:32,003 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_222| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_222|)) (forall ((v_ArrVal_583 Int) (v_ArrVal_581 Int) (|v_ULTIMATE.start_main_~i~0#1_221| Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_222| 4)) v_ArrVal_581) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_221| 4)) v_ArrVal_583) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 24))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_222| 1) |v_ULTIMATE.start_main_~i~0#1_221|)))))) (<= 6 |c_ULTIMATE.start_main_~i~0#1|) (<= 15 |c_ULTIMATE.start_main_~j~0#1|) (<= 15 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= |c_ULTIMATE.start_main_~i~0#1| 6)) is different from false [2022-07-22 10:34:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:34:32,467 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2022-07-22 10:34:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-22 10:34:32,467 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.357142857142857) internal successors, (132), 56 states have internal predecessors, (132), 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 55 [2022-07-22 10:34:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:34:32,468 INFO L225 Difference]: With dead ends: 90 [2022-07-22 10:34:32,468 INFO L226 Difference]: Without dead ends: 88 [2022-07-22 10:34:32,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 74 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1113 ImplicationChecksByTransitivity, 62.3s TimeCoverageRelationStatistics Valid=398, Invalid=4247, Unknown=55, NotChecked=270, Total=4970 [2022-07-22 10:34:32,469 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 373 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:34:32,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 417 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 913 Invalid, 0 Unknown, 373 Unchecked, 0.3s Time] [2022-07-22 10:34:32,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-07-22 10:34:32,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2022-07-22 10:34:32,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0655737704918034) internal successors, (65), 61 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 10:34:32,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2022-07-22 10:34:32,478 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 55 [2022-07-22 10:34:32,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:34:32,478 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2022-07-22 10:34:32,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.357142857142857) internal successors, (132), 56 states have internal predecessors, (132), 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) [2022-07-22 10:34:32,479 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2022-07-22 10:34:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 10:34:32,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:34:32,479 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2022-07-22 10:34:32,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-22 10:34:32,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-22 10:34:32,679 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:34:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:34:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash -147752396, now seen corresponding path program 17 times [2022-07-22 10:34:32,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:34:32,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298131739] [2022-07-22 10:34:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:34:32,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:34:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:34:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 40 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:34:33,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:34:33,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298131739] [2022-07-22 10:34:33,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298131739] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:34:33,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171364218] [2022-07-22 10:34:33,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 10:34:33,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:34:33,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:34:33,125 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:34:33,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-22 10:34:33,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-07-22 10:34:33,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:34:33,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 45 conjunts are in the unsatisfiable core [2022-07-22 10:34:33,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:34:33,568 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-22 10:34:33,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:34:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:34:33,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:34:34,128 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-07-22 10:34:34,131 INFO L390 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 32 treesize of output 28 [2022-07-22 10:34:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:34:34,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171364218] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:34:34,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:34:34,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 25] total 71 [2022-07-22 10:34:34,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845251416] [2022-07-22 10:34:34,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:34:34,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-07-22 10:34:34,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:34:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-07-22 10:34:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=4692, Unknown=0, NotChecked=0, Total=4970 [2022-07-22 10:34:34,724 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand has 71 states, 71 states have (on average 2.295774647887324) internal successors, (163), 71 states have internal predecessors, (163), 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) [2022-07-22 10:34:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:34:35,863 INFO L93 Difference]: Finished difference Result 97 states and 101 transitions. [2022-07-22 10:34:35,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-22 10:34:35,863 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.295774647887324) internal successors, (163), 71 states have internal predecessors, (163), 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 56 [2022-07-22 10:34:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:34:35,864 INFO L225 Difference]: With dead ends: 97 [2022-07-22 10:34:35,864 INFO L226 Difference]: Without dead ends: 62 [2022-07-22 10:34:35,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 65 SyntacticMatches, 9 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=489, Invalid=7343, Unknown=0, NotChecked=0, Total=7832 [2022-07-22 10:34:35,865 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 48 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 10:34:35,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 712 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1370 Invalid, 0 Unknown, 296 Unchecked, 0.4s Time] [2022-07-22 10:34:35,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-22 10:34:35,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-07-22 10:34:35,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 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) [2022-07-22 10:34:35,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2022-07-22 10:34:35,872 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 56 [2022-07-22 10:34:35,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:34:35,873 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2022-07-22 10:34:35,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.295774647887324) internal successors, (163), 71 states have internal predecessors, (163), 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) [2022-07-22 10:34:35,873 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2022-07-22 10:34:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 10:34:35,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:34:35,873 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2022-07-22 10:34:35,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-22 10:34:36,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:34:36,074 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:34:36,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:34:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash -412901702, now seen corresponding path program 18 times [2022-07-22 10:34:36,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:34:36,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395493198] [2022-07-22 10:34:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:34:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:34:36,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:34:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:34:36,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:34:36,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395493198] [2022-07-22 10:34:36,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395493198] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:34:36,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991122688] [2022-07-22 10:34:36,461 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 10:34:36,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:34:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:34:36,462 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:34:36,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-22 10:34:36,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-07-22 10:34:36,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:34:36,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-22 10:34:36,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:34:36,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:34:36,727 INFO L356 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-07-22 10:34:36,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-07-22 10:34:36,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:34:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:34:36,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:34:39,231 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_255| Int)) (or (forall ((v_ArrVal_665 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_255| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_665) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_255|)))) is different from false [2022-07-22 10:34:39,237 INFO L390 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 21 [2022-07-22 10:34:39,242 INFO L390 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 82 treesize of output 78 [2022-07-22 10:34:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-07-22 10:34:39,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991122688] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:34:39,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:34:39,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 60 [2022-07-22 10:34:39,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382146994] [2022-07-22 10:34:39,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:34:39,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-07-22 10:34:39,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:34:39,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-07-22 10:34:39,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3223, Unknown=1, NotChecked=114, Total=3540 [2022-07-22 10:34:39,743 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 60 states, 60 states have (on average 2.4) internal successors, (144), 60 states have internal predecessors, (144), 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) [2022-07-22 10:34:41,929 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_255| Int)) (or (forall ((v_ArrVal_665 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_255| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_665) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_255|)))) (<= 7 |c_ULTIMATE.start_main_~i~0#1|) (<= 21 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= |c_ULTIMATE.start_main_~i~0#1| 7)) is different from false [2022-07-22 10:34:42,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:34:42,294 INFO L93 Difference]: Finished difference Result 101 states and 104 transitions. [2022-07-22 10:34:42,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 10:34:42,295 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.4) internal successors, (144), 60 states have internal predecessors, (144), 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 59 [2022-07-22 10:34:42,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:34:42,295 INFO L225 Difference]: With dead ends: 101 [2022-07-22 10:34:42,295 INFO L226 Difference]: Without dead ends: 99 [2022-07-22 10:34:42,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 80 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1151 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=289, Invalid=4409, Unknown=2, NotChecked=270, Total=4970 [2022-07-22 10:34:42,296 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 65 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 366 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:34:42,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 736 Invalid, 1359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 947 Invalid, 0 Unknown, 366 Unchecked, 0.3s Time] [2022-07-22 10:34:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-07-22 10:34:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 68. [2022-07-22 10:34:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 67 states have internal predecessors, (71), 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) [2022-07-22 10:34:42,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2022-07-22 10:34:42,309 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 59 [2022-07-22 10:34:42,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:34:42,309 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2022-07-22 10:34:42,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.4) internal successors, (144), 60 states have internal predecessors, (144), 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) [2022-07-22 10:34:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2022-07-22 10:34:42,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-22 10:34:42,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:34:42,310 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2022-07-22 10:34:42,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-22 10:34:42,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:34:42,532 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:34:42,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:34:42,532 INFO L85 PathProgramCache]: Analyzing trace with hash -302205485, now seen corresponding path program 1 times [2022-07-22 10:34:42,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:34:42,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838277967] [2022-07-22 10:34:42,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:34:42,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:34:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:34:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 10:34:42,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:34:42,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838277967] [2022-07-22 10:34:42,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838277967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:34:42,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15323616] [2022-07-22 10:34:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:34:42,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:34:42,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:34:42,644 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:34:42,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-22 10:34:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:34:42,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 10:34:42,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:34:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 10:34:42,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:34:43,089 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-22 10:34:43,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15323616] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:34:43,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:34:43,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2022-07-22 10:34:43,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221977361] [2022-07-22 10:34:43,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:34:43,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-22 10:34:43,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:34:43,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-22 10:34:43,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=753, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 10:34:43,091 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 states have internal predecessors, (105), 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) [2022-07-22 10:34:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:34:43,403 INFO L93 Difference]: Finished difference Result 508 states and 534 transitions. [2022-07-22 10:34:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 10:34:43,404 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 states have internal predecessors, (105), 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 61 [2022-07-22 10:34:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:34:43,405 INFO L225 Difference]: With dead ends: 508 [2022-07-22 10:34:43,405 INFO L226 Difference]: Without dead ends: 479 [2022-07-22 10:34:43,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=876, Invalid=1380, Unknown=0, NotChecked=0, Total=2256 [2022-07-22 10:34:43,406 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 648 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:34:43,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 164 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:34:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-07-22 10:34:43,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 103. [2022-07-22 10:34:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 102 states have internal predecessors, (117), 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) [2022-07-22 10:34:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 117 transitions. [2022-07-22 10:34:43,425 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 117 transitions. Word has length 61 [2022-07-22 10:34:43,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:34:43,425 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 117 transitions. [2022-07-22 10:34:43,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.8378378378378377) internal successors, (105), 36 states have internal predecessors, (105), 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) [2022-07-22 10:34:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 117 transitions. [2022-07-22 10:34:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-22 10:34:43,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:34:43,426 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2022-07-22 10:34:43,448 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-07-22 10:34:43,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-22 10:34:43,643 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:34:43,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:34:43,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1031019404, now seen corresponding path program 19 times [2022-07-22 10:34:43,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:34:43,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858249429] [2022-07-22 10:34:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:34:43,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:34:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:34:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:34:44,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:34:44,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858249429] [2022-07-22 10:34:44,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858249429] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:34:44,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336561333] [2022-07-22 10:34:44,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 10:34:44,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:34:44,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:34:44,033 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:34:44,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-22 10:34:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:34:44,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 51 conjunts are in the unsatisfiable core [2022-07-22 10:34:44,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:34:44,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:34:44,217 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:34:44,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:34:44,255 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:34:44,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:34:44,454 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:34:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 2 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:34:44,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:34:46,743 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_295| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_295|)) (forall ((v_ArrVal_759 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_295| 4)) v_ArrVal_759) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))))) is different from false [2022-07-22 10:35:00,471 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_296| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_296|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_295| Int) (v_ArrVal_759 Int) (v_ArrVal_757 Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_296| 4)) v_ArrVal_757) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_295| 4)) v_ArrVal_759) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_296| 1) |v_ULTIMATE.start_main_~i~0#1_295|)))))) is different from false [2022-07-22 10:35:00,477 INFO L390 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 30 treesize of output 28 [2022-07-22 10:35:00,481 INFO L390 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 386 treesize of output 378 [2022-07-22 10:35:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 17 not checked. [2022-07-22 10:35:01,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336561333] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:35:01,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:35:01,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 29] total 63 [2022-07-22 10:35:01,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500369539] [2022-07-22 10:35:01,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:35:01,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-07-22 10:35:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:35:01,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-07-22 10:35:01,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=3420, Unknown=31, NotChecked=238, Total=3906 [2022-07-22 10:35:01,050 INFO L87 Difference]: Start difference. First operand 103 states and 117 transitions. Second operand has 63 states, 63 states have (on average 2.380952380952381) internal successors, (150), 63 states have internal predecessors, (150), 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) [2022-07-22 10:35:03,342 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_296| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_296|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_295| Int) (v_ArrVal_759 Int) (v_ArrVal_757 Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_296| 4)) v_ArrVal_757) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_295| 4)) v_ArrVal_759) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_296| 1) |v_ULTIMATE.start_main_~i~0#1_295|)))))) (<= 7 |c_ULTIMATE.start_main_~i~0#1|) (<= 21 |c_ULTIMATE.start_main_~j~0#1|) (<= 21 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= |c_ULTIMATE.start_main_~i~0#1| 7)) is different from false [2022-07-22 10:35:05,372 WARN L833 $PredicateComparison]: unable to prove that (and (<= 21 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28))) (forall ((|v_ULTIMATE.start_main_~i~0#1_295| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_295|)) (forall ((v_ArrVal_759 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_295| 4)) v_ArrVal_759) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))))) (<= 8 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2022-07-22 10:35:07,401 WARN L833 $PredicateComparison]: unable to prove that (and (<= 21 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28))) (forall ((|v_ULTIMATE.start_main_~i~0#1_295| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_295|)) (forall ((v_ArrVal_759 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_295| 4)) v_ArrVal_759) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))))) (<= 9 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2022-07-22 10:35:07,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:35:07,949 INFO L93 Difference]: Finished difference Result 134 states and 148 transitions. [2022-07-22 10:35:07,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 10:35:07,949 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.380952380952381) internal successors, (150), 63 states have internal predecessors, (150), 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 62 [2022-07-22 10:35:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:35:07,950 INFO L225 Difference]: With dead ends: 134 [2022-07-22 10:35:07,950 INFO L226 Difference]: Without dead ends: 132 [2022-07-22 10:35:07,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 84 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=436, Invalid=5402, Unknown=34, NotChecked=770, Total=6642 [2022-07-22 10:35:07,951 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 89 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 180 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 10:35:07,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 545 Invalid, 1814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1555 Invalid, 0 Unknown, 180 Unchecked, 0.5s Time] [2022-07-22 10:35:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-07-22 10:35:07,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 102. [2022-07-22 10:35:07,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 101 states have internal predecessors, (116), 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) [2022-07-22 10:35:07,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2022-07-22 10:35:07,965 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 62 [2022-07-22 10:35:07,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:35:07,965 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2022-07-22 10:35:07,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 2.380952380952381) internal successors, (150), 63 states have internal predecessors, (150), 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) [2022-07-22 10:35:07,965 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2022-07-22 10:35:07,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-22 10:35:07,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:35:07,966 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2022-07-22 10:35:07,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-22 10:35:08,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-22 10:35:08,189 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:35:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:35:08,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1132689008, now seen corresponding path program 20 times [2022-07-22 10:35:08,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:35:08,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910838588] [2022-07-22 10:35:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:35:08,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:35:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:35:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:08,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:35:08,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910838588] [2022-07-22 10:35:08,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910838588] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:35:08,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241260467] [2022-07-22 10:35:08,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:35:08,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:08,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:35:08,638 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:35:08,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-22 10:35:08,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:35:08,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:35:08,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-22 10:35:08,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:35:08,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:35:09,355 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-07-22 10:35:09,355 INFO L390 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 23 treesize of output 10 [2022-07-22 10:35:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 91 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:09,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:35:09,921 INFO L390 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 18 treesize of output 16 [2022-07-22 10:35:09,924 INFO L390 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 38 treesize of output 32 [2022-07-22 10:35:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 84 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:10,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241260467] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:35:10,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:35:10,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 68 [2022-07-22 10:35:10,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114374990] [2022-07-22 10:35:10,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:35:10,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-07-22 10:35:10,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:35:10,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-07-22 10:35:10,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=3954, Unknown=0, NotChecked=0, Total=4556 [2022-07-22 10:35:10,584 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 68 states, 68 states have (on average 2.3970588235294117) internal successors, (163), 68 states have internal predecessors, (163), 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) [2022-07-22 10:35:11,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:35:11,232 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2022-07-22 10:35:11,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-22 10:35:11,232 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.3970588235294117) internal successors, (163), 68 states have internal predecessors, (163), 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 63 [2022-07-22 10:35:11,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:35:11,233 INFO L225 Difference]: With dead ends: 138 [2022-07-22 10:35:11,233 INFO L226 Difference]: Without dead ends: 102 [2022-07-22 10:35:11,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=896, Invalid=6586, Unknown=0, NotChecked=0, Total=7482 [2022-07-22 10:35:11,234 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 53 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 10:35:11,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 354 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 645 Invalid, 0 Unknown, 192 Unchecked, 0.2s Time] [2022-07-22 10:35:11,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-22 10:35:11,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-07-22 10:35:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 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) [2022-07-22 10:35:11,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2022-07-22 10:35:11,253 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 63 [2022-07-22 10:35:11,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:35:11,253 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2022-07-22 10:35:11,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.3970588235294117) internal successors, (163), 68 states have internal predecessors, (163), 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) [2022-07-22 10:35:11,253 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2022-07-22 10:35:11,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 10:35:11,254 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:35:11,254 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2022-07-22 10:35:11,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-22 10:35:11,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-22 10:35:11,467 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:35:11,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:35:11,468 INFO L85 PathProgramCache]: Analyzing trace with hash 557731626, now seen corresponding path program 21 times [2022-07-22 10:35:11,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:35:11,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963024431] [2022-07-22 10:35:11,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:35:11,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:35:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:35:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:11,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:35:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963024431] [2022-07-22 10:35:11,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963024431] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:35:11,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123666818] [2022-07-22 10:35:11,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:35:11,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:11,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:35:11,974 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:35:11,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-22 10:35:12,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-07-22 10:35:12,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:35:12,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-22 10:35:12,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:35:12,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:35:12,265 INFO L356 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-07-22 10:35:12,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-07-22 10:35:12,535 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:35:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:12,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:35:14,939 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_334| Int)) (or (forall ((v_ArrVal_850 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_334| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_850) (+ 32 |c_ULTIMATE.start_main_~#a~0#1.offset|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_334|)))) is different from false [2022-07-22 10:35:14,944 INFO L390 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 21 [2022-07-22 10:35:14,947 INFO L390 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 186 treesize of output 178 [2022-07-22 10:35:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 244 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-07-22 10:35:15,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123666818] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:35:15,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:35:15,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 67 [2022-07-22 10:35:15,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178070098] [2022-07-22 10:35:15,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:35:15,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-07-22 10:35:15,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:35:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-07-22 10:35:15,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=4066, Unknown=1, NotChecked=128, Total=4422 [2022-07-22 10:35:15,564 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 67 states, 67 states have (on average 2.417910447761194) internal successors, (162), 67 states have internal predecessors, (162), 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) [2022-07-22 10:35:17,859 WARN L833 $PredicateComparison]: unable to prove that (and (<= |c_ULTIMATE.start_main_~i~0#1| 8) (<= 8 |c_ULTIMATE.start_main_~i~0#1|) (<= 28 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= 28 |c_ULTIMATE.start_main_~j~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_334| Int)) (or (forall ((v_ArrVal_850 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_334| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_850) (+ 32 |c_ULTIMATE.start_main_~#a~0#1.offset|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_334|))))) is different from false [2022-07-22 10:35:18,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:35:18,360 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2022-07-22 10:35:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 10:35:18,361 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.417910447761194) internal successors, (162), 67 states have internal predecessors, (162), 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 66 [2022-07-22 10:35:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:35:18,362 INFO L225 Difference]: With dead ends: 144 [2022-07-22 10:35:18,362 INFO L226 Difference]: Without dead ends: 142 [2022-07-22 10:35:18,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=324, Invalid=5534, Unknown=2, NotChecked=302, Total=6162 [2022-07-22 10:35:18,363 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 58 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 140 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 10:35:18,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 720 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1482 Invalid, 0 Unknown, 140 Unchecked, 0.5s Time] [2022-07-22 10:35:18,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-07-22 10:35:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 107. [2022-07-22 10:35:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1320754716981132) internal successors, (120), 106 states have internal predecessors, (120), 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) [2022-07-22 10:35:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 120 transitions. [2022-07-22 10:35:18,381 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 120 transitions. Word has length 66 [2022-07-22 10:35:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:35:18,381 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 120 transitions. [2022-07-22 10:35:18,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.417910447761194) internal successors, (162), 67 states have internal predecessors, (162), 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) [2022-07-22 10:35:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 120 transitions. [2022-07-22 10:35:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 10:35:18,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:35:18,382 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2022-07-22 10:35:18,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-22 10:35:18,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:18,586 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:35:18,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:35:18,587 INFO L85 PathProgramCache]: Analyzing trace with hash 331940912, now seen corresponding path program 22 times [2022-07-22 10:35:18,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:35:18,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488998299] [2022-07-22 10:35:18,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:35:18,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:35:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:35:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:19,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:35:19,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488998299] [2022-07-22 10:35:19,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488998299] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:35:19,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313383882] [2022-07-22 10:35:19,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 10:35:19,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:19,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:35:19,053 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:35:19,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-22 10:35:19,133 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 10:35:19,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:35:19,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-22 10:35:19,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:35:19,232 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:35:19,268 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:35:19,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:35:19,304 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:35:19,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:35:19,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:35:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 2 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:19,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:35:21,887 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_355| Int)) (or (forall ((v_ArrVal_904 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_355| 4)) v_ArrVal_904) (+ 32 |c_ULTIMATE.start_main_~#a~0#1.offset|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_355|)))) is different from false [2022-07-22 10:35:40,271 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_356| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_355| Int) (v_ArrVal_904 Int) (v_ArrVal_901 Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_356| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_901) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_355| 4)) v_ArrVal_904) (+ 32 |c_ULTIMATE.start_main_~#a~0#1.offset|))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_356| 1) |v_ULTIMATE.start_main_~i~0#1_355|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_356|)))) is different from false [2022-07-22 10:35:40,277 INFO L390 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 30 treesize of output 28 [2022-07-22 10:35:40,279 INFO L390 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 386 treesize of output 378 [2022-07-22 10:35:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 19 not checked. [2022-07-22 10:35:41,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313383882] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:35:41,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:35:41,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 32] total 70 [2022-07-22 10:35:41,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689275495] [2022-07-22 10:35:41,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:35:41,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-07-22 10:35:41,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:35:41,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-07-22 10:35:41,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=4281, Unknown=41, NotChecked=266, Total=4830 [2022-07-22 10:35:41,011 INFO L87 Difference]: Start difference. First operand 107 states and 120 transitions. Second operand has 70 states, 70 states have (on average 2.4) internal successors, (168), 70 states have internal predecessors, (168), 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) [2022-07-22 10:35:43,266 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_356| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_355| Int) (v_ArrVal_904 Int) (v_ArrVal_901 Int)) (or (<= 0 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_356| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_901) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_355| 4)) v_ArrVal_904) (+ 32 |c_ULTIMATE.start_main_~#a~0#1.offset|))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_356| 1) |v_ULTIMATE.start_main_~i~0#1_355|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_356|)))) (<= |c_ULTIMATE.start_main_~i~0#1| 8) (<= 8 |c_ULTIMATE.start_main_~i~0#1|) (<= 28 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= 28 |c_ULTIMATE.start_main_~j~0#1|)) is different from false [2022-07-22 10:35:45,292 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_355| Int)) (or (forall ((v_ArrVal_904 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_355| 4)) v_ArrVal_904) (+ 32 |c_ULTIMATE.start_main_~#a~0#1.offset|)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_355|)))) (<= 28 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ 32 |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= 9 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2022-07-22 10:35:45,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:35:45,944 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2022-07-22 10:35:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-22 10:35:45,944 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.4) internal successors, (168), 70 states have internal predecessors, (168), 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 69 [2022-07-22 10:35:45,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:35:45,945 INFO L225 Difference]: With dead ends: 142 [2022-07-22 10:35:45,945 INFO L226 Difference]: Without dead ends: 140 [2022-07-22 10:35:45,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 102 SyntacticMatches, 7 SemanticMatches, 88 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=486, Invalid=6797, Unknown=43, NotChecked=684, Total=8010 [2022-07-22 10:35:45,946 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 95 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 10:35:45,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 558 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1445 Invalid, 0 Unknown, 185 Unchecked, 0.5s Time] [2022-07-22 10:35:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-22 10:35:45,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 106. [2022-07-22 10:35:45,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.1333333333333333) internal successors, (119), 105 states have internal predecessors, (119), 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) [2022-07-22 10:35:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2022-07-22 10:35:45,964 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 69 [2022-07-22 10:35:45,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:35:45,964 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2022-07-22 10:35:45,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.4) internal successors, (168), 70 states have internal predecessors, (168), 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) [2022-07-22 10:35:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2022-07-22 10:35:45,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-22 10:35:45,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:35:45,965 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2022-07-22 10:35:45,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-22 10:35:46,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:46,165 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:35:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:35:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1229951264, now seen corresponding path program 23 times [2022-07-22 10:35:46,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:35:46,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637862142] [2022-07-22 10:35:46,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:35:46,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:35:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:35:46,674 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:46,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:35:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637862142] [2022-07-22 10:35:46,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637862142] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:35:46,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142915339] [2022-07-22 10:35:46,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 10:35:46,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:46,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:35:46,675 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:35:46,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-22 10:35:46,911 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-07-22 10:35:46,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:35:46,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 55 conjunts are in the unsatisfiable core [2022-07-22 10:35:46,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:35:47,035 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:35:47,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:35:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:47,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:35:47,669 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2022-07-22 10:35:47,670 INFO L390 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 32 treesize of output 28 [2022-07-22 10:35:48,396 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:48,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142915339] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:35:48,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:35:48,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31, 31] total 70 [2022-07-22 10:35:48,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558375810] [2022-07-22 10:35:48,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:35:48,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-07-22 10:35:48,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:35:48,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-07-22 10:35:48,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=4594, Unknown=0, NotChecked=0, Total=4830 [2022-07-22 10:35:48,398 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 70 states, 70 states have (on average 2.4714285714285715) internal successors, (173), 70 states have internal predecessors, (173), 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) [2022-07-22 10:35:49,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:35:49,233 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2022-07-22 10:35:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-22 10:35:49,233 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.4714285714285715) internal successors, (173), 70 states have internal predecessors, (173), 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 70 [2022-07-22 10:35:49,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:35:49,234 INFO L225 Difference]: With dead ends: 152 [2022-07-22 10:35:49,234 INFO L226 Difference]: Without dead ends: 150 [2022-07-22 10:35:49,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 96 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1631 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=340, Invalid=6302, Unknown=0, NotChecked=0, Total=6642 [2022-07-22 10:35:49,235 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 38 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 778 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 10:35:49,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1050 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1591 Invalid, 0 Unknown, 778 Unchecked, 0.5s Time] [2022-07-22 10:35:49,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-22 10:35:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 111. [2022-07-22 10:35:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 110 states have internal predecessors, (124), 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) [2022-07-22 10:35:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2022-07-22 10:35:49,257 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 70 [2022-07-22 10:35:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:35:49,257 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2022-07-22 10:35:49,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 2.4714285714285715) internal successors, (173), 70 states have internal predecessors, (173), 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) [2022-07-22 10:35:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2022-07-22 10:35:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 10:35:49,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:35:49,259 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2022-07-22 10:35:49,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-07-22 10:35:49,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:49,459 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:35:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:35:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1261252838, now seen corresponding path program 24 times [2022-07-22 10:35:49,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:35:49,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639414879] [2022-07-22 10:35:49,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:35:49,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:35:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:35:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:50,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:35:50,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639414879] [2022-07-22 10:35:50,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639414879] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:35:50,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747184586] [2022-07-22 10:35:50,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 10:35:50,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:50,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:35:50,008 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:35:50,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-22 10:35:50,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-07-22 10:35:50,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:35:50,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 58 conjunts are in the unsatisfiable core [2022-07-22 10:35:50,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:35:50,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:35:50,328 INFO L356 Elim1Store]: treesize reduction 37, result has 22.9 percent of original size [2022-07-22 10:35:50,329 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2022-07-22 10:35:50,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:35:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:50,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:35:53,034 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_397| Int)) (or (forall ((v_ArrVal_1002 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_397| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_1002) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_397|)))) is different from false [2022-07-22 10:35:53,038 INFO L390 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 21 [2022-07-22 10:35:53,040 INFO L390 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 82 treesize of output 78 [2022-07-22 10:35:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 305 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-07-22 10:35:53,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747184586] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:35:53,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:35:53,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33, 33] total 74 [2022-07-22 10:35:53,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079690203] [2022-07-22 10:35:53,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:35:53,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-07-22 10:35:53,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:35:53,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-07-22 10:35:53,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=5007, Unknown=1, NotChecked=142, Total=5402 [2022-07-22 10:35:53,757 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 74 states, 74 states have (on average 2.4324324324324325) internal successors, (180), 74 states have internal predecessors, (180), 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) [2022-07-22 10:35:56,159 WARN L833 $PredicateComparison]: unable to prove that (and (<= 36 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (<= |c_ULTIMATE.start_main_~i~0#1| 9) (<= 36 |c_ULTIMATE.start_main_~j~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_397| Int)) (or (forall ((v_ArrVal_1002 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_397| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) v_ArrVal_1002) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36)))) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_397|)))) (<= 9 |c_ULTIMATE.start_main_~i~0#1|)) is different from false [2022-07-22 10:35:56,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:35:56,727 INFO L93 Difference]: Finished difference Result 181 states and 194 transitions. [2022-07-22 10:35:56,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-22 10:35:56,727 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.4324324324324325) internal successors, (180), 74 states have internal predecessors, (180), 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 73 [2022-07-22 10:35:56,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:35:56,728 INFO L225 Difference]: With dead ends: 181 [2022-07-22 10:35:56,728 INFO L226 Difference]: Without dead ends: 179 [2022-07-22 10:35:56,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 106 SyntacticMatches, 7 SemanticMatches, 83 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1722 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=334, Invalid=6478, Unknown=2, NotChecked=326, Total=7140 [2022-07-22 10:35:56,729 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 51 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 10:35:56,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 978 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1989 Invalid, 0 Unknown, 110 Unchecked, 0.6s Time] [2022-07-22 10:35:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-07-22 10:35:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 111. [2022-07-22 10:35:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 110 states have internal predecessors, (124), 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) [2022-07-22 10:35:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2022-07-22 10:35:56,749 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 73 [2022-07-22 10:35:56,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:35:56,749 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2022-07-22 10:35:56,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.4324324324324325) internal successors, (180), 74 states have internal predecessors, (180), 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) [2022-07-22 10:35:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2022-07-22 10:35:56,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-22 10:35:56,750 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:35:56,750 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2022-07-22 10:35:56,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-07-22 10:35:56,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-07-22 10:35:56,950 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:35:56,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:35:56,951 INFO L85 PathProgramCache]: Analyzing trace with hash 33538966, now seen corresponding path program 25 times [2022-07-22 10:35:56,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:35:56,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432802665] [2022-07-22 10:35:56,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:35:56,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:35:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:35:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 129 proven. 188 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:35:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432802665] [2022-07-22 10:35:57,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432802665] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:35:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774917960] [2022-07-22 10:35:57,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 10:35:57,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:57,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:35:57,160 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:35:57,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-22 10:35:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:35:57,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 10:35:57,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:35:57,575 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 162 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:57,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:35:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 162 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:57,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774917960] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:35:57,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 10:35:57,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2022-07-22 10:35:57,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142241896] [2022-07-22 10:35:57,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 10:35:57,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-22 10:35:57,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:35:57,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-22 10:35:57,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 10:35:57,667 INFO L87 Difference]: Start difference. First operand 111 states and 124 transitions. Second operand has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 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) [2022-07-22 10:35:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:35:57,806 INFO L93 Difference]: Finished difference Result 155 states and 168 transitions. [2022-07-22 10:35:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 10:35:57,806 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 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 74 [2022-07-22 10:35:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:35:57,806 INFO L225 Difference]: With dead ends: 155 [2022-07-22 10:35:57,807 INFO L226 Difference]: Without dead ends: 111 [2022-07-22 10:35:57,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=291, Invalid=899, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 10:35:57,807 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:35:57,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 205 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:35:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-07-22 10:35:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-07-22 10:35:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.1181818181818182) internal successors, (123), 110 states have internal predecessors, (123), 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) [2022-07-22 10:35:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2022-07-22 10:35:57,827 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 74 [2022-07-22 10:35:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:35:57,827 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2022-07-22 10:35:57,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.4571428571428573) internal successors, (121), 35 states have internal predecessors, (121), 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) [2022-07-22 10:35:57,828 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2022-07-22 10:35:57,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 10:35:57,828 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:35:57,828 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2022-07-22 10:35:57,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-07-22 10:35:58,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:58,031 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:35:58,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:35:58,032 INFO L85 PathProgramCache]: Analyzing trace with hash -312219360, now seen corresponding path program 26 times [2022-07-22 10:35:58,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:35:58,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250521515] [2022-07-22 10:35:58,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:35:58,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:35:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:35:58,654 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 0 proven. 350 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:58,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:35:58,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250521515] [2022-07-22 10:35:58,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250521515] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:35:58,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34584286] [2022-07-22 10:35:58,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:35:58,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:35:58,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:35:58,656 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 10:35:58,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-22 10:35:58,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:35:58,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:35:58,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-22 10:35:58,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:35:58,874 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-22 10:35:58,912 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:35:58,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:35:58,948 INFO L356 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-07-22 10:35:58,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:35:59,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-22 10:35:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 2 proven. 348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 10:35:59,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:36:01,651 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_441| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_441|)) (forall ((v_ArrVal_1103 Int)) (<= 0 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_441| 4)) v_ArrVal_1103) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36)))))) is different from false