./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.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-multidimensional/init-non-constant-2-n-u.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 4fa401c700a21fa1f98a1481c8e8ba1555a45c0429555dc041a1c04ce1059991 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 10:15:47,333 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 10:15:47,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 10:15:47,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 10:15:47,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 10:15:47,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 10:15:47,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 10:15:47,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 10:15:47,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 10:15:47,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 10:15:47,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 10:15:47,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 10:15:47,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 10:15:47,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 10:15:47,383 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 10:15:47,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 10:15:47,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 10:15:47,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 10:15:47,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 10:15:47,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 10:15:47,393 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 10:15:47,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 10:15:47,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 10:15:47,395 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 10:15:47,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 10:15:47,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 10:15:47,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 10:15:47,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 10:15:47,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 10:15:47,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 10:15:47,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 10:15:47,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 10:15:47,406 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 10:15:47,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 10:15:47,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 10:15:47,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 10:15:47,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 10:15:47,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 10:15:47,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 10:15:47,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 10:15:47,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 10:15:47,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 10:15:47,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 10:15:47,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 10:15:47,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 10:15:47,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 10:15:47,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 10:15:47,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 10:15:47,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 10:15:47,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 10:15:47,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 10:15:47,441 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 10:15:47,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 10:15:47,442 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 10:15:47,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 10:15:47,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 10:15:47,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 10:15:47,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 10:15:47,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 10:15:47,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 10:15:47,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 10:15:47,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 10:15:47,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 10:15:47,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 10:15:47,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 10:15:47,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 10:15:47,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 10:15:47,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:15:47,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 10:15:47,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 10:15:47,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 10:15:47,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 10:15:47,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 10:15:47,446 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 10:15:47,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 10:15:47,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 10:15:47,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa401c700a21fa1f98a1481c8e8ba1555a45c0429555dc041a1c04ce1059991 [2022-07-22 10:15:47,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 10:15:47,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 10:15:47,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 10:15:47,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 10:15:47,658 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 10:15:47,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c [2022-07-22 10:15:47,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640f9a949/be224a515f264696be5eba7b503e5a78/FLAGdcda44b46 [2022-07-22 10:15:48,028 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 10:15:48,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c [2022-07-22 10:15:48,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640f9a949/be224a515f264696be5eba7b503e5a78/FLAGdcda44b46 [2022-07-22 10:15:48,071 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640f9a949/be224a515f264696be5eba7b503e5a78 [2022-07-22 10:15:48,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 10:15:48,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 10:15:48,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 10:15:48,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 10:15:48,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 10:15:48,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b0ccc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48, skipping insertion in model container [2022-07-22 10:15:48,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 10:15:48,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 10:15:48,271 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-multidimensional/init-non-constant-2-n-u.c[421,434] [2022-07-22 10:15:48,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:15:48,293 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 10:15:48,305 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-multidimensional/init-non-constant-2-n-u.c[421,434] [2022-07-22 10:15:48,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 10:15:48,332 INFO L208 MainTranslator]: Completed translation [2022-07-22 10:15:48,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48 WrapperNode [2022-07-22 10:15:48,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 10:15:48,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 10:15:48,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 10:15:48,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 10:15:48,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,364 INFO L137 Inliner]: procedures = 16, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2022-07-22 10:15:48,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 10:15:48,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 10:15:48,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 10:15:48,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 10:15:48,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 10:15:48,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 10:15:48,403 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 10:15:48,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 10:15:48,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (1/1) ... [2022-07-22 10:15:48,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 10:15:48,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:48,445 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 10:15:48,463 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 10:15:48,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 10:15:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 10:15:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 10:15:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 10:15:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 10:15:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 10:15:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 10:15:48,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 10:15:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 10:15:48,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 10:15:48,523 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 10:15:48,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 10:15:48,628 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 10:15:48,632 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 10:15:48,633 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 10:15:48,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:15:48 BoogieIcfgContainer [2022-07-22 10:15:48,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 10:15:48,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 10:15:48,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 10:15:48,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 10:15:48,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:15:48" (1/3) ... [2022-07-22 10:15:48,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e60b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:15:48, skipping insertion in model container [2022-07-22 10:15:48,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:15:48" (2/3) ... [2022-07-22 10:15:48,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e60b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:15:48, skipping insertion in model container [2022-07-22 10:15:48,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:15:48" (3/3) ... [2022-07-22 10:15:48,640 INFO L111 eAbstractionObserver]: Analyzing ICFG init-non-constant-2-n-u.c [2022-07-22 10:15:48,650 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 10:15:48,650 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 10:15:48,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 10:15:48,687 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@655c71fd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3004ec60 [2022-07-22 10:15:48,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 10:15:48,691 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:48,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 10:15:48,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:48,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:48,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:48,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1178325179, now seen corresponding path program 1 times [2022-07-22 10:15:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:48,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649905239] [2022-07-22 10:15:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:48,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:48,766 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:48,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [177504969] [2022-07-22 10:15:48,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:48,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:48,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:48,783 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 10:15:48,784 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 10:15:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:15:48,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 10:15:48,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-22 10:15:48,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 10:15:48,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:15:48,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649905239] [2022-07-22 10:15:48,862 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:15:48,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177504969] [2022-07-22 10:15:48,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177504969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:15:48,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:15:48,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 10:15:48,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244191257] [2022-07-22 10:15:48,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:15:48,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 10:15:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:15:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 10:15:48,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 10:15:48,887 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 20 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:48,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:15:48,899 INFO L93 Difference]: Finished difference Result 43 states and 64 transitions. [2022-07-22 10:15:48,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 10:15:48,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-22 10:15:48,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:15:48,905 INFO L225 Difference]: With dead ends: 43 [2022-07-22 10:15:48,905 INFO L226 Difference]: Without dead ends: 19 [2022-07-22 10:15:48,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 10:15:48,909 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:15:48,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:15:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-22 10:15:48,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-22 10:15:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-07-22 10:15:48,934 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 18 [2022-07-22 10:15:48,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:15:48,934 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-07-22 10:15:48,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:48,935 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-07-22 10:15:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-22 10:15:48,936 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:48,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:48,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 10:15:49,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 10:15:49,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:49,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:49,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1509384059, now seen corresponding path program 1 times [2022-07-22 10:15:49,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:49,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424217671] [2022-07-22 10:15:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:49,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:49,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:49,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537017488] [2022-07-22 10:15:49,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:49,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:49,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:49,197 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 10:15:49,220 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 10:15:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:15:49,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 10:15:49,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:49,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 10:15:49,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:15:49,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424217671] [2022-07-22 10:15:49,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:15:49,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537017488] [2022-07-22 10:15:49,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537017488] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:15:49,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:15:49,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 10:15:49,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925577844] [2022-07-22 10:15:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:15:49,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 10:15:49,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:15:49,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 10:15:49,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 10:15:49,336 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:49,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:15:49,375 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-07-22 10:15:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 10:15:49,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-07-22 10:15:49,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:15:49,376 INFO L225 Difference]: With dead ends: 38 [2022-07-22 10:15:49,376 INFO L226 Difference]: Without dead ends: 29 [2022-07-22 10:15:49,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 10:15:49,378 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:15:49,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 42 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:15:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-07-22 10:15:49,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-07-22 10:15:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-07-22 10:15:49,383 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 18 [2022-07-22 10:15:49,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:15:49,384 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-07-22 10:15:49,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:49,384 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-07-22 10:15:49,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-22 10:15:49,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:49,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:49,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 10:15:49,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-22 10:15:49,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:49,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1347743446, now seen corresponding path program 1 times [2022-07-22 10:15:49,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:49,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342698029] [2022-07-22 10:15:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:49,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:49,615 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:49,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [843233861] [2022-07-22 10:15:49,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:49,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:49,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:49,635 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 10:15:49,637 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 10:15:49,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:15:49,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 10:15:49,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:49,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 10:15:49,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:15:49,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342698029] [2022-07-22 10:15:49,708 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:15:49,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843233861] [2022-07-22 10:15:49,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843233861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 10:15:49,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 10:15:49,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 10:15:49,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588366550] [2022-07-22 10:15:49,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 10:15:49,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 10:15:49,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:15:49,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 10:15:49,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 10:15:49,712 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:49,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:15:49,774 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-07-22 10:15:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 10:15:49,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-07-22 10:15:49,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:15:49,775 INFO L225 Difference]: With dead ends: 50 [2022-07-22 10:15:49,776 INFO L226 Difference]: Without dead ends: 27 [2022-07-22 10:15:49,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 10:15:49,777 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:15:49,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 62 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:15:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-22 10:15:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-07-22 10:15:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-07-22 10:15:49,782 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 21 [2022-07-22 10:15:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:15:49,782 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-07-22 10:15:49,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-07-22 10:15:49,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-22 10:15:49,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:49,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:49,802 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 10:15:50,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:50,000 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:50,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:50,001 INFO L85 PathProgramCache]: Analyzing trace with hash -142126156, now seen corresponding path program 1 times [2022-07-22 10:15:50,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:50,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851913065] [2022-07-22 10:15:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:50,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:50,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:50,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1868211781] [2022-07-22 10:15:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:50,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:50,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:50,015 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 10:15:50,016 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 10:15:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:15:50,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 10:15:50,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:50,121 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 11 treesize of output 7 [2022-07-22 10:15:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:50,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:15:50,322 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 27 treesize of output 25 [2022-07-22 10:15:50,333 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 43 treesize of output 41 [2022-07-22 10:15:50,431 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:50,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:15:50,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851913065] [2022-07-22 10:15:50,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:15:50,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868211781] [2022-07-22 10:15:50,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868211781] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:15:50,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:15:50,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-07-22 10:15:50,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954440807] [2022-07-22 10:15:50,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:15:50,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 10:15:50,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:15:50,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 10:15:50,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-22 10:15:50,434 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:15:50,551 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2022-07-22 10:15:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 10:15:50,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-07-22 10:15:50,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:15:50,552 INFO L225 Difference]: With dead ends: 64 [2022-07-22 10:15:50,552 INFO L226 Difference]: Without dead ends: 62 [2022-07-22 10:15:50,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-22 10:15:50,553 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 74 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:15:50,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 90 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:15:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-07-22 10:15:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 30. [2022-07-22 10:15:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-07-22 10:15:50,559 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 22 [2022-07-22 10:15:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:15:50,559 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-07-22 10:15:50,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-07-22 10:15:50,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 10:15:50,560 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:50,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:50,580 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 10:15:50,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:50,775 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:50,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:50,776 INFO L85 PathProgramCache]: Analyzing trace with hash 762284573, now seen corresponding path program 1 times [2022-07-22 10:15:50,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:50,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137585927] [2022-07-22 10:15:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:50,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:50,785 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:50,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742327770] [2022-07-22 10:15:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:50,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:50,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:50,792 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 10:15:50,793 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 10:15:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:15:50,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 10:15:50,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:50,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:15:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:15:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137585927] [2022-07-22 10:15:50,890 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:15:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742327770] [2022-07-22 10:15:50,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742327770] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:15:50,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:15:50,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-22 10:15:50,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498509988] [2022-07-22 10:15:50,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:15:50,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 10:15:50,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:15:50,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 10:15:50,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 10:15:50,892 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:15:50,956 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2022-07-22 10:15:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 10:15:50,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-07-22 10:15:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:15:50,957 INFO L225 Difference]: With dead ends: 80 [2022-07-22 10:15:50,957 INFO L226 Difference]: Without dead ends: 67 [2022-07-22 10:15:50,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-22 10:15:50,958 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 45 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:15:50,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 94 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:15:50,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-07-22 10:15:50,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 52. [2022-07-22 10:15:50,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.2708333333333333) internal successors, (61), 48 states have internal predecessors, (61), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-07-22 10:15:50,965 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 25 [2022-07-22 10:15:50,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:15:50,966 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-07-22 10:15:50,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:50,966 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-07-22 10:15:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-22 10:15:50,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:50,967 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:50,998 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 10:15:51,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:51,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:51,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:51,185 INFO L85 PathProgramCache]: Analyzing trace with hash 923457379, now seen corresponding path program 2 times [2022-07-22 10:15:51,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:51,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081023787] [2022-07-22 10:15:51,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:51,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:51,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:51,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1409948664] [2022-07-22 10:15:51,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:15:51,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:51,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:51,206 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 10:15:51,208 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 10:15:51,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:15:51,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:15:51,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-22 10:15:51,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:51,288 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 19 treesize of output 15 [2022-07-22 10:15:51,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:15:51,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-07-22 10:15:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:51,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:15:53,528 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_23| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_23|)) (forall ((v_ArrVal_46 Int)) (= (mod (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_23| (* |c_ULTIMATE.start_main_~n~0#1| 4))) v_ArrVal_46) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296) (mod |c_ULTIMATE.start_main_~C~0#1| 4294967296))))) is different from false [2022-07-22 10:15:53,556 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 36 treesize of output 34 [2022-07-22 10:15:53,561 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 97 treesize of output 95 [2022-07-22 10:15:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2022-07-22 10:15:53,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:15:53,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081023787] [2022-07-22 10:15:53,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:15:53,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1409948664] [2022-07-22 10:15:53,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1409948664] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:15:53,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:15:53,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2022-07-22 10:15:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181921955] [2022-07-22 10:15:53,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:15:53,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 10:15:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:15:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 10:15:53,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=213, Unknown=1, NotChecked=30, Total=306 [2022-07-22 10:15:53,932 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 10:15:55,964 WARN L833 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~n~0#1| 1500) (forall ((|v_ULTIMATE.start_main_~i~0#1_23| Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_23|)) (forall ((v_ArrVal_46 Int)) (= (mod (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_23| (* |c_ULTIMATE.start_main_~n~0#1| 4))) v_ArrVal_46) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296) (mod |c_ULTIMATE.start_main_~C~0#1| 4294967296))))) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= |c_ULTIMATE.start_main_~#A~0#1.offset| 0) (= (+ |c_ULTIMATE.start_main_~C~0#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_~#A~0#1.offset| (* (* |c_ULTIMATE.start_main_~n~0#1| 4) |c_ULTIMATE.start_main_~i~0#1|))))) is different from false [2022-07-22 10:15:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:15:56,110 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2022-07-22 10:15:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 10:15:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2022-07-22 10:15:56,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:15:56,111 INFO L225 Difference]: With dead ends: 76 [2022-07-22 10:15:56,111 INFO L226 Difference]: Without dead ends: 74 [2022-07-22 10:15:56,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=113, Invalid=355, Unknown=2, NotChecked=82, Total=552 [2022-07-22 10:15:56,112 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:15:56,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 101 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 130 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2022-07-22 10:15:56,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-22 10:15:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2022-07-22 10:15:56,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 52 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:56,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2022-07-22 10:15:56,120 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 26 [2022-07-22 10:15:56,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:15:56,121 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2022-07-22 10:15:56,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 10:15:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2022-07-22 10:15:56,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-22 10:15:56,121 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:56,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:56,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 10:15:56,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:56,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:56,340 INFO L85 PathProgramCache]: Analyzing trace with hash -789350489, now seen corresponding path program 2 times [2022-07-22 10:15:56,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:56,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417058442] [2022-07-22 10:15:56,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:56,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:56,347 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:56,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024133938] [2022-07-22 10:15:56,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:15:56,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:56,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:56,348 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 10:15:56,349 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 10:15:56,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:15:56,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:15:56,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 10:15:56,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:56,452 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 10:15:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:56,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:15:56,628 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 10:15:56,632 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 50 treesize of output 46 [2022-07-22 10:15:57,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:15:57,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417058442] [2022-07-22 10:15:57,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:15:57,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024133938] [2022-07-22 10:15:57,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024133938] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:15:57,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:15:57,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-07-22 10:15:57,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992544218] [2022-07-22 10:15:57,072 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:15:57,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 10:15:57,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:15:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 10:15:57,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-07-22 10:15:57,073 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:15:57,218 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2022-07-22 10:15:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 10:15:57,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-07-22 10:15:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:15:57,220 INFO L225 Difference]: With dead ends: 91 [2022-07-22 10:15:57,220 INFO L226 Difference]: Without dead ends: 89 [2022-07-22 10:15:57,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2022-07-22 10:15:57,221 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 47 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:15:57,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 102 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:15:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-07-22 10:15:57,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 59. [2022-07-22 10:15:57,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2022-07-22 10:15:57,229 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 26 [2022-07-22 10:15:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:15:57,229 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2022-07-22 10:15:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2022-07-22 10:15:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 10:15:57,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:57,230 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:57,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 10:15:57,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:57,448 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash 67410713, now seen corresponding path program 3 times [2022-07-22 10:15:57,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:57,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629748774] [2022-07-22 10:15:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:57,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:57,469 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:57,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884612510] [2022-07-22 10:15:57,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:15:57,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:57,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:57,479 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 10:15:57,480 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 10:15:57,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-07-22 10:15:57,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:15:57,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 10:15:57,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:57,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:15:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:57,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:15:57,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629748774] [2022-07-22 10:15:57,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:15:57,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884612510] [2022-07-22 10:15:57,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884612510] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:15:57,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:15:57,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-22 10:15:57,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244404747] [2022-07-22 10:15:57,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:15:57,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 10:15:57,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:15:57,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 10:15:57,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 10:15:57,571 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:15:57,678 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2022-07-22 10:15:57,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 10:15:57,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-07-22 10:15:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:15:57,679 INFO L225 Difference]: With dead ends: 82 [2022-07-22 10:15:57,679 INFO L226 Difference]: Without dead ends: 69 [2022-07-22 10:15:57,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-22 10:15:57,680 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 52 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:15:57,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 98 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:15:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-07-22 10:15:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 59. [2022-07-22 10:15:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-07-22 10:15:57,693 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 27 [2022-07-22 10:15:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:15:57,694 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-07-22 10:15:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-07-22 10:15:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 10:15:57,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:57,695 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:57,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 10:15:57,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 10:15:57,912 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:57,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1681074929, now seen corresponding path program 1 times [2022-07-22 10:15:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:57,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895001105] [2022-07-22 10:15:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:57,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:57,919 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:57,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136298234] [2022-07-22 10:15:57,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:57,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:57,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:57,923 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 10:15:57,924 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 10:15:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:15:57,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 10:15:57,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 10:15:58,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:15:58,036 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 10:15:58,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:15:58,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895001105] [2022-07-22 10:15:58,036 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:15:58,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136298234] [2022-07-22 10:15:58,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136298234] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:15:58,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:15:58,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-22 10:15:58,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905262852] [2022-07-22 10:15:58,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:15:58,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 10:15:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:15:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 10:15:58,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 10:15:58,040 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:58,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:15:58,102 INFO L93 Difference]: Finished difference Result 129 states and 152 transitions. [2022-07-22 10:15:58,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 10:15:58,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-07-22 10:15:58,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:15:58,104 INFO L225 Difference]: With dead ends: 129 [2022-07-22 10:15:58,104 INFO L226 Difference]: Without dead ends: 102 [2022-07-22 10:15:58,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-22 10:15:58,106 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 50 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 10:15:58,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 71 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 10:15:58,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-07-22 10:15:58,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 62. [2022-07-22 10:15:58,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.206896551724138) internal successors, (70), 58 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:15:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2022-07-22 10:15:58,116 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 28 [2022-07-22 10:15:58,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:15:58,116 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2022-07-22 10:15:58,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:15:58,116 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2022-07-22 10:15:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 10:15:58,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:15:58,117 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:15:58,136 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 10:15:58,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:58,334 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:15:58,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:15:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash 777979813, now seen corresponding path program 4 times [2022-07-22 10:15:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:15:58,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244014004] [2022-07-22 10:15:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:15:58,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:15:58,341 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:15:58,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1413077033] [2022-07-22 10:15:58,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 10:15:58,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:15:58,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:15:58,342 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 10:15:58,373 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 10:15:58,400 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 10:15:58,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:15:58,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-22 10:15:58,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:15:58,432 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 19 treesize of output 15 [2022-07-22 10:15:58,457 INFO L356 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2022-07-22 10:15:58,457 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 36 treesize of output 35 [2022-07-22 10:15:58,505 INFO L356 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-07-22 10:15:58,506 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 10:15:58,540 INFO L356 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2022-07-22 10:15:58,540 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 41 [2022-07-22 10:15:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:15:58,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:16:07,134 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_111 Int) (v_ArrVal_107 Int) (|v_ULTIMATE.start_main_~j~0#1_63| Int)) (or (= (mod (select (let ((.cse0 (* |c_ULTIMATE.start_main_~n~0#1| 4))) (let ((.cse1 (* (+ |c_ULTIMATE.start_main_~i~0#1| 1) .cse0))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| (* .cse0 |c_ULTIMATE.start_main_~i~0#1|) (* |c_ULTIMATE.start_main_~j~0#1| 4)) v_ArrVal_107) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse1) (+ |c_ULTIMATE.start_main_~C~0#1| |c_ULTIMATE.start_main_~i~0#1| 1)) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse1 (* |v_ULTIMATE.start_main_~j~0#1_63| 4)) v_ArrVal_111))) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296) (mod |c_ULTIMATE.start_main_~C~0#1| 4294967296)) (not (<= 1 |v_ULTIMATE.start_main_~j~0#1_63|)))) is different from false [2022-07-22 10:16:07,160 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 70 treesize of output 68 [2022-07-22 10:16:07,165 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 1114 treesize of output 1110 [2022-07-22 10:16:14,867 WARN L233 SmtUtils]: Spent 5.50s on a formula simplification. DAG size of input: 90 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 10:16:15,403 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 5 not checked. [2022-07-22 10:16:15,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:16:15,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244014004] [2022-07-22 10:16:15,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:16:15,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413077033] [2022-07-22 10:16:15,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413077033] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:16:15,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:16:15,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-22 10:16:15,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837558862] [2022-07-22 10:16:15,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:16:15,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 10:16:15,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:16:15,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 10:16:15,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=356, Unknown=5, NotChecked=40, Total=506 [2022-07-22 10:16:15,405 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 10:16:18,872 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse0 (* |c_ULTIMATE.start_main_~n~0#1| 4)) (.cse1 (* 4 .cse2))) (let ((.cse3 (= 0 (+ .cse0 .cse1)))) (and (= (mod (+ |c_ULTIMATE.start_main_~C~0#1| |c_ULTIMATE.start_main_~i~0#1|) 4294967296) (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| (* .cse0 |c_ULTIMATE.start_main_~i~0#1|))) 4294967296)) (or (and (= .cse1 0) (< 0 (+ |c_ULTIMATE.start_main_~n~0#1| .cse2 1))) .cse3) (or (not .cse3) (<= (div (+ (* (- 1) |c_ULTIMATE.start_main_~i~0#1|) (- 4294967297)) (- 4294967296)) (+ (div (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 1))) (forall ((v_ArrVal_111 Int) (|v_ULTIMATE.start_main_~j~0#1_63| Int)) (or (= (mod |c_ULTIMATE.start_main_~C~0#1| 4294967296) (mod (select (let ((.cse4 (* (+ |c_ULTIMATE.start_main_~i~0#1| 1) (* |c_ULTIMATE.start_main_~n~0#1| 4)))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse4) (+ |c_ULTIMATE.start_main_~C~0#1| |c_ULTIMATE.start_main_~i~0#1| 1)) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse4 (* |v_ULTIMATE.start_main_~j~0#1_63| 4)) v_ArrVal_111)) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296)) (not (<= 1 |v_ULTIMATE.start_main_~j~0#1_63|)))) (<= 1 |c_ULTIMATE.start___VERIFIER_assert_~cond#1|))))) is different from false [2022-07-22 10:16:20,157 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse0 (* |c_ULTIMATE.start_main_~n~0#1| 4)) (.cse1 (* 4 .cse2))) (let ((.cse3 (= 0 (+ .cse0 .cse1)))) (and (= (mod (+ |c_ULTIMATE.start_main_~C~0#1| |c_ULTIMATE.start_main_~i~0#1|) 4294967296) (mod (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| (* .cse0 |c_ULTIMATE.start_main_~i~0#1|))) 4294967296)) (or (and (= .cse1 0) (< 0 (+ |c_ULTIMATE.start_main_~n~0#1| .cse2 1))) .cse3) (or (not .cse3) (<= (div (+ (* (- 1) |c_ULTIMATE.start_main_~i~0#1|) (- 4294967297)) (- 4294967296)) (+ (div (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 1))) (forall ((v_ArrVal_111 Int) (|v_ULTIMATE.start_main_~j~0#1_63| Int)) (or (= (mod |c_ULTIMATE.start_main_~C~0#1| 4294967296) (mod (select (let ((.cse4 (* (+ |c_ULTIMATE.start_main_~i~0#1| 1) (* |c_ULTIMATE.start_main_~n~0#1| 4)))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse4) (+ |c_ULTIMATE.start_main_~C~0#1| |c_ULTIMATE.start_main_~i~0#1| 1)) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse4 (* |v_ULTIMATE.start_main_~j~0#1_63| 4)) v_ArrVal_111)) |c_ULTIMATE.start_main_~#A~0#1.offset|) 4294967296)) (not (<= 1 |v_ULTIMATE.start_main_~j~0#1_63|)))))))) is different from false [2022-07-22 10:16:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:16:20,265 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2022-07-22 10:16:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 10:16:20,266 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-07-22 10:16:20,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:16:20,267 INFO L225 Difference]: With dead ends: 113 [2022-07-22 10:16:20,267 INFO L226 Difference]: Without dead ends: 111 [2022-07-22 10:16:20,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=190, Invalid=683, Unknown=9, NotChecked=174, Total=1056 [2022-07-22 10:16:20,268 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 44 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 10:16:20,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 124 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 172 Invalid, 0 Unknown, 192 Unchecked, 0.4s Time] [2022-07-22 10:16:20,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-07-22 10:16:20,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 80. [2022-07-22 10:16:20,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 76 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:16:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2022-07-22 10:16:20,281 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 28 [2022-07-22 10:16:20,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:16:20,282 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2022-07-22 10:16:20,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.565217391304348) internal successors, (36), 23 states have internal predecessors, (36), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 10:16:20,283 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2022-07-22 10:16:20,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-22 10:16:20,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:16:20,286 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:16:20,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 10:16:20,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 10:16:20,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:16:20,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:16:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash -589628086, now seen corresponding path program 3 times [2022-07-22 10:16:20,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:16:20,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197124934] [2022-07-22 10:16:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:16:20,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:16:20,517 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:16:20,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682307529] [2022-07-22 10:16:20,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 10:16:20,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:16:20,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:16:20,518 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 10:16:20,519 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 10:16:20,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 10:16:20,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:16:20,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 10:16:20,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:16:20,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:16:20,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:16:20,657 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:16:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:16:20,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197124934] [2022-07-22 10:16:20,657 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:16:20,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682307529] [2022-07-22 10:16:20,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682307529] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:16:20,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:16:20,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-22 10:16:20,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811616738] [2022-07-22 10:16:20,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:16:20,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 10:16:20,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:16:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 10:16:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 10:16:20,659 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:16:20,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:16:20,813 INFO L93 Difference]: Finished difference Result 187 states and 226 transitions. [2022-07-22 10:16:20,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 10:16:20,814 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-07-22 10:16:20,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:16:20,815 INFO L225 Difference]: With dead ends: 187 [2022-07-22 10:16:20,815 INFO L226 Difference]: Without dead ends: 146 [2022-07-22 10:16:20,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2022-07-22 10:16:20,816 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 120 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:16:20,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 129 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:16:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-07-22 10:16:20,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 115. [2022-07-22 10:16:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 111 states have (on average 1.2342342342342343) internal successors, (137), 111 states have internal predecessors, (137), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:16:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 141 transitions. [2022-07-22 10:16:20,831 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 141 transitions. Word has length 29 [2022-07-22 10:16:20,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:16:20,831 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 141 transitions. [2022-07-22 10:16:20,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:16:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 141 transitions. [2022-07-22 10:16:20,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 10:16:20,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:16:20,832 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:16:20,865 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 10:16:21,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 10:16:21,050 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:16:21,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:16:21,050 INFO L85 PathProgramCache]: Analyzing trace with hash 439948756, now seen corresponding path program 4 times [2022-07-22 10:16:21,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:16:21,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406708345] [2022-07-22 10:16:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:16:21,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:16:21,059 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:16:21,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055682442] [2022-07-22 10:16:21,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-22 10:16:21,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:16:21,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:16:21,061 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 10:16:21,062 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 10:16:21,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-22 10:16:21,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:16:21,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-22 10:16:21,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:16:21,162 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 25 treesize of output 21 [2022-07-22 10:16:21,189 INFO L356 Elim1Store]: treesize reduction 52, result has 20.0 percent of original size [2022-07-22 10:16:21,189 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 37 treesize of output 36 [2022-07-22 10:16:21,221 INFO L356 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2022-07-22 10:16:21,222 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2022-07-22 10:16:21,427 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-07-22 10:16:21,428 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 39 [2022-07-22 10:16:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:16:21,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:16:28,199 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 163 treesize of output 159 [2022-07-22 10:16:28,209 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-22 10:16:28,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1384 treesize of output 1368 [2022-07-22 10:16:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:16:30,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406708345] [2022-07-22 10:16:30,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:16:30,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055682442] [2022-07-22 10:16:30,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055682442] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:16:30,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:16:30,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-07-22 10:16:30,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034436903] [2022-07-22 10:16:30,922 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:16:30,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 10:16:30,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:16:30,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 10:16:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=427, Unknown=1, NotChecked=0, Total=552 [2022-07-22 10:16:30,923 INFO L87 Difference]: Start difference. First operand 115 states and 141 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:16:31,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:16:31,217 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2022-07-22 10:16:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 10:16:31,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2022-07-22 10:16:31,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:16:31,218 INFO L225 Difference]: With dead ends: 124 [2022-07-22 10:16:31,218 INFO L226 Difference]: Without dead ends: 122 [2022-07-22 10:16:31,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=192, Invalid=563, Unknown=1, NotChecked=0, Total=756 [2022-07-22 10:16:31,219 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 10:16:31,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 73 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 10:16:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-07-22 10:16:31,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 118. [2022-07-22 10:16:31,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 114 states have (on average 1.2280701754385965) internal successors, (140), 114 states have internal predecessors, (140), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:16:31,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 144 transitions. [2022-07-22 10:16:31,236 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 144 transitions. Word has length 30 [2022-07-22 10:16:31,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:16:31,236 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 144 transitions. [2022-07-22 10:16:31,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:16:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 144 transitions. [2022-07-22 10:16:31,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-22 10:16:31,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:16:31,237 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:16:31,255 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 10:16:31,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 10:16:31,452 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:16:31,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:16:31,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1157923980, now seen corresponding path program 5 times [2022-07-22 10:16:31,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:16:31,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766741228] [2022-07-22 10:16:31,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:16:31,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:16:31,460 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:16:31,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949731830] [2022-07-22 10:16:31,460 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-22 10:16:31,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:16:31,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:16:31,480 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 10:16:31,483 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 10:16:31,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-22 10:16:31,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:16:31,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-22 10:16:31,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:16:31,603 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 21 treesize of output 17 [2022-07-22 10:16:31,654 INFO L356 Elim1Store]: treesize reduction 58, result has 21.6 percent of original size [2022-07-22 10:16:31,654 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 38 treesize of output 37 [2022-07-22 10:16:31,690 INFO L356 Elim1Store]: treesize reduction 92, result has 18.6 percent of original size [2022-07-22 10:16:31,691 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 45 [2022-07-22 10:16:31,831 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-22 10:16:31,831 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 70 treesize of output 28 [2022-07-22 10:16:31,850 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:16:31,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:16:33,895 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_99| Int) (v_ArrVal_171 Int)) (or (not (<= (+ |c_ULTIMATE.start_main_~j~0#1| 1) |v_ULTIMATE.start_main_~j~0#1_99|)) (= (mod (+ |c_ULTIMATE.start_main_~C~0#1| 1) 4294967296) (mod (select (let ((.cse0 (* (* |c_ULTIMATE.start_main_~n~0#1| 4) |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse0 (* |c_ULTIMATE.start_main_~j~0#1| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |c_ULTIMATE.start_main_~C~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_99| 4) .cse0) v_ArrVal_171)) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| 4)) 4294967296)))) is different from false [2022-07-22 10:16:35,039 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~j~0#1_99| Int) (v_ArrVal_171 Int)) (or (= (mod (select (let ((.cse0 (* (* |c_ULTIMATE.start_main_~n~0#1| 4) |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#A~0#1.base|) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| .cse0) (+ |c_ULTIMATE.start_main_~C~0#1| |c_ULTIMATE.start_main_~i~0#1|)) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| (* |v_ULTIMATE.start_main_~j~0#1_99| 4) .cse0) v_ArrVal_171)) (+ |c_ULTIMATE.start_main_~#A~0#1.offset| 4)) 4294967296) (mod (+ |c_ULTIMATE.start_main_~C~0#1| 1) 4294967296)) (not (<= 1 |v_ULTIMATE.start_main_~j~0#1_99|)))) is different from false [2022-07-22 10:16:55,771 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 60 treesize of output 58 [2022-07-22 10:16:55,785 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 1230 treesize of output 1214 [2022-07-22 10:17:28,011 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 7 not checked. [2022-07-22 10:17:28,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:17:28,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766741228] [2022-07-22 10:17:28,012 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:17:28,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949731830] [2022-07-22 10:17:28,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949731830] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:17:28,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:17:28,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2022-07-22 10:17:28,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806527929] [2022-07-22 10:17:28,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:17:28,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 10:17:28,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:17:28,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 10:17:28,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=8, NotChecked=86, Total=600 [2022-07-22 10:17:28,013 INFO L87 Difference]: Start difference. First operand 118 states and 144 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 10:17:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:17:29,989 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2022-07-22 10:17:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 10:17:29,990 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2022-07-22 10:17:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:17:29,990 INFO L225 Difference]: With dead ends: 134 [2022-07-22 10:17:29,990 INFO L226 Difference]: Without dead ends: 132 [2022-07-22 10:17:29,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=106, Invalid=445, Unknown=9, NotChecked=90, Total=650 [2022-07-22 10:17:29,991 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 10:17:29,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 182 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 162 Invalid, 0 Unknown, 126 Unchecked, 0.3s Time] [2022-07-22 10:17:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-07-22 10:17:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2022-07-22 10:17:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 123 states have (on average 1.2195121951219512) internal successors, (150), 123 states have internal predecessors, (150), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:17:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 154 transitions. [2022-07-22 10:17:30,005 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 154 transitions. Word has length 31 [2022-07-22 10:17:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:17:30,005 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 154 transitions. [2022-07-22 10:17:30,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 10:17:30,005 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 154 transitions. [2022-07-22 10:17:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 10:17:30,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:17:30,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:17:30,025 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 10:17:30,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 10:17:30,209 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:17:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:17:30,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1356140704, now seen corresponding path program 2 times [2022-07-22 10:17:30,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:17:30,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816245845] [2022-07-22 10:17:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:17:30,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:17:30,220 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:17:30,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070014624] [2022-07-22 10:17:30,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:17:30,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:17:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:17:30,235 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 10:17:30,236 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 10:17:30,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:17:30,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:17:30,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-22 10:17:30,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:17:30,501 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 19 treesize of output 15 [2022-07-22 10:17:30,718 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:17:30,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:17:31,236 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 32 treesize of output 30 [2022-07-22 10:17:31,240 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 56 treesize of output 50 [2022-07-22 10:17:37,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:17:37,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816245845] [2022-07-22 10:17:37,096 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:17:37,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070014624] [2022-07-22 10:17:37,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070014624] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 10:17:37,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 10:17:37,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-07-22 10:17:37,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130729760] [2022-07-22 10:17:37,097 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 10:17:37,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 10:17:37,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:17:37,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 10:17:37,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=678, Unknown=1, NotChecked=0, Total=870 [2022-07-22 10:17:37,098 INFO L87 Difference]: Start difference. First operand 127 states and 154 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:17:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:17:37,396 INFO L93 Difference]: Finished difference Result 152 states and 179 transitions. [2022-07-22 10:17:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 10:17:37,396 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-22 10:17:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:17:37,397 INFO L225 Difference]: With dead ends: 152 [2022-07-22 10:17:37,397 INFO L226 Difference]: Without dead ends: 150 [2022-07-22 10:17:37,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=341, Invalid=1064, Unknown=1, NotChecked=0, Total=1406 [2022-07-22 10:17:37,398 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 53 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:17:37,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 118 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:17:37,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-22 10:17:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 134. [2022-07-22 10:17:37,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 1.2076923076923076) internal successors, (157), 130 states have internal predecessors, (157), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:17:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 161 transitions. [2022-07-22 10:17:37,412 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 161 transitions. Word has length 32 [2022-07-22 10:17:37,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:17:37,413 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 161 transitions. [2022-07-22 10:17:37,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:17:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 161 transitions. [2022-07-22 10:17:37,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-22 10:17:37,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:17:37,414 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:17:37,445 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 10:17:37,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:17:37,647 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:17:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:17:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1556176234, now seen corresponding path program 6 times [2022-07-22 10:17:37,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:17:37,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947892622] [2022-07-22 10:17:37,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:17:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:17:37,656 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:17:37,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45966825] [2022-07-22 10:17:37,656 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-22 10:17:37,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:17:37,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:17:37,658 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 10:17:37,659 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 10:17:37,713 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-22 10:17:37,713 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:17:37,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 10:17:37,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:17:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 10:17:37,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:17:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 10:17:37,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:17:37,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947892622] [2022-07-22 10:17:37,775 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:17:37,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45966825] [2022-07-22 10:17:37,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45966825] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:17:37,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:17:37,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-07-22 10:17:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111165362] [2022-07-22 10:17:37,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:17:37,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 10:17:37,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:17:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 10:17:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 10:17:37,777 INFO L87 Difference]: Start difference. First operand 134 states and 161 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:17:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:17:37,915 INFO L93 Difference]: Finished difference Result 177 states and 203 transitions. [2022-07-22 10:17:37,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 10:17:37,915 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-22 10:17:37,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:17:37,916 INFO L225 Difference]: With dead ends: 177 [2022-07-22 10:17:37,916 INFO L226 Difference]: Without dead ends: 149 [2022-07-22 10:17:37,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-07-22 10:17:37,917 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 64 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:17:37,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 148 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:17:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-07-22 10:17:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 129. [2022-07-22 10:17:37,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 125 states have (on average 1.176) internal successors, (147), 125 states have internal predecessors, (147), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:17:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 151 transitions. [2022-07-22 10:17:37,937 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 151 transitions. Word has length 32 [2022-07-22 10:17:37,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:17:37,937 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 151 transitions. [2022-07-22 10:17:37,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:17:37,938 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 151 transitions. [2022-07-22 10:17:37,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 10:17:37,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:17:37,938 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:17:37,958 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 10:17:38,138 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,SelfDestructingSolverStorable14 [2022-07-22 10:17:38,139 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:17:38,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:17:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1721953283, now seen corresponding path program 7 times [2022-07-22 10:17:38,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:17:38,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639741276] [2022-07-22 10:17:38,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:17:38,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:17:38,152 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:17:38,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006622611] [2022-07-22 10:17:38,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-22 10:17:38,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:17:38,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:17:38,153 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 10:17:38,154 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 10:17:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 10:17:38,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 10:17:38,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:17:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:17:38,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:17:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:17:38,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 10:17:38,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639741276] [2022-07-22 10:17:38,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 10:17:38,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006622611] [2022-07-22 10:17:38,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006622611] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 10:17:38,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 10:17:38,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-07-22 10:17:38,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167276922] [2022-07-22 10:17:38,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 10:17:38,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 10:17:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 10:17:38,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 10:17:38,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-07-22 10:17:38,326 INFO L87 Difference]: Start difference. First operand 129 states and 151 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:17:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 10:17:38,600 INFO L93 Difference]: Finished difference Result 248 states and 286 transitions. [2022-07-22 10:17:38,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 10:17:38,600 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2022-07-22 10:17:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 10:17:38,608 INFO L225 Difference]: With dead ends: 248 [2022-07-22 10:17:38,608 INFO L226 Difference]: Without dead ends: 205 [2022-07-22 10:17:38,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=200, Invalid=502, Unknown=0, NotChecked=0, Total=702 [2022-07-22 10:17:38,612 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 146 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 10:17:38,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 198 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 10:17:38,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-22 10:17:38,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 166. [2022-07-22 10:17:38,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 162 states have (on average 1.1975308641975309) internal successors, (194), 162 states have internal predecessors, (194), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-22 10:17:38,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 198 transitions. [2022-07-22 10:17:38,631 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 198 transitions. Word has length 33 [2022-07-22 10:17:38,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 10:17:38,632 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 198 transitions. [2022-07-22 10:17:38,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 10:17:38,632 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 198 transitions. [2022-07-22 10:17:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 10:17:38,632 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 10:17:38,633 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 10:17:38,652 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 10:17:38,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 10:17:38,849 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 10:17:38,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 10:17:38,849 INFO L85 PathProgramCache]: Analyzing trace with hash 352808526, now seen corresponding path program 8 times [2022-07-22 10:17:38,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 10:17:38,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170339641] [2022-07-22 10:17:38,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 10:17:38,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 10:17:38,855 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 10:17:38,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804001680] [2022-07-22 10:17:38,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 10:17:38,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 10:17:38,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 10:17:38,857 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 10:17:38,858 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 10:17:39,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 10:17:39,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 10:17:39,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-22 10:17:39,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 10:17:39,092 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 21 treesize of output 17 [2022-07-22 10:17:39,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 35 [2022-07-22 10:17:39,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2022-07-22 10:17:39,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,203 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:17:39,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 50 [2022-07-22 10:17:39,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 10:17:39,237 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:17:39,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 62 [2022-07-22 10:17:39,600 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 10:17:39,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 95 treesize of output 47 [2022-07-22 10:17:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 10:17:39,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 10:17:51,932 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 219 treesize of output 215 [2022-07-22 10:17:52,040 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-07-22 10:17:52,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1337186 treesize of output 1333058 [2022-07-22 10:18:30,461 WARN L233 SmtUtils]: Spent 28.28s on a formula simplification. DAG size of input: 2208 DAG size of output: 2207 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 10:18:56,079 WARN L233 SmtUtils]: Spent 9.94s on a formula simplification. DAG size of input: 1518 DAG size of output: 1517 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 10:19:07,254 WARN L233 SmtUtils]: Spent 5.87s on a formula simplification. DAG size of input: 1514 DAG size of output: 1514 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 10:19:19,929 WARN L233 SmtUtils]: Spent 11.85s on a formula simplification. DAG size of input: 1512 DAG size of output: 1512 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-22 10:19:39,474 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 1275 DAG size of output: 1275 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)