./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array1_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-patterns/array1_pattern.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 f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 00:38:44,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 00:38:44,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 00:38:44,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 00:38:44,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 00:38:44,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 00:38:44,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 00:38:44,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 00:38:44,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 00:38:44,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 00:38:44,309 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 00:38:44,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 00:38:44,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 00:38:44,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 00:38:44,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 00:38:44,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 00:38:44,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 00:38:44,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 00:38:44,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 00:38:44,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 00:38:44,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 00:38:44,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 00:38:44,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 00:38:44,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 00:38:44,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 00:38:44,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 00:38:44,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 00:38:44,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 00:38:44,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 00:38:44,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 00:38:44,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 00:38:44,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 00:38:44,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 00:38:44,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 00:38:44,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 00:38:44,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 00:38:44,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 00:38:44,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 00:38:44,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 00:38:44,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 00:38:44,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 00:38:44,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 00:38:44,363 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 00:38:44,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 00:38:44,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 00:38:44,370 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 00:38:44,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 00:38:44,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 00:38:44,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 00:38:44,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 00:38:44,371 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 00:38:44,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 00:38:44,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 00:38:44,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 00:38:44,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 00:38:44,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 00:38:44,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 00:38:44,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 00:38:44,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 00:38:44,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 00:38:44,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 00:38:44,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 00:38:44,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 00:38:44,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 00:38:44,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 00:38:44,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 00:38:44,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 00:38:44,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 00:38:44,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 00:38:44,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 00:38:44,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 00:38:44,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 00:38:44,375 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 00:38:44,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 00:38:44,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 00:38:44,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 00:38:44,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f9fbee177c3231db1a1e3277e649158ac81edd180968ad454e1d0751d0f1d4e9 [2021-12-17 00:38:44,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 00:38:44,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 00:38:44,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 00:38:44,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 00:38:44,596 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 00:38:44,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array1_pattern.c [2021-12-17 00:38:44,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a6da3deb/fc0632e4b87948a8a470526c229c7973/FLAG72a938f0c [2021-12-17 00:38:44,993 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 00:38:44,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array1_pattern.c [2021-12-17 00:38:44,999 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a6da3deb/fc0632e4b87948a8a470526c229c7973/FLAG72a938f0c [2021-12-17 00:38:45,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a6da3deb/fc0632e4b87948a8a470526c229c7973 [2021-12-17 00:38:45,411 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 00:38:45,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 00:38:45,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 00:38:45,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 00:38:45,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 00:38:45,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,417 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d06cde3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45, skipping insertion in model container [2021-12-17 00:38:45,417 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 00:38:45,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 00:38:45,523 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-patterns/array1_pattern.c[1307,1320] [2021-12-17 00:38:45,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 00:38:45,543 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 00:38:45,554 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-patterns/array1_pattern.c[1307,1320] [2021-12-17 00:38:45,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 00:38:45,584 INFO L208 MainTranslator]: Completed translation [2021-12-17 00:38:45,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45 WrapperNode [2021-12-17 00:38:45,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 00:38:45,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 00:38:45,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 00:38:45,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 00:38:45,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,621 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 76 [2021-12-17 00:38:45,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 00:38:45,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 00:38:45,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 00:38:45,622 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 00:38:45,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,631 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 00:38:45,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 00:38:45,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 00:38:45,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 00:38:45,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (1/1) ... [2021-12-17 00:38:45,658 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 00:38:45,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:38:45,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 00:38:45,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 00:38:45,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 00:38:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 00:38:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 00:38:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 00:38:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 00:38:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 00:38:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 00:38:45,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 00:38:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 00:38:45,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 00:38:45,761 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 00:38:45,762 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 00:38:45,940 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 00:38:45,945 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 00:38:45,945 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-17 00:38:45,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:38:45 BoogieIcfgContainer [2021-12-17 00:38:45,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 00:38:45,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 00:38:45,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 00:38:45,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 00:38:45,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 12:38:45" (1/3) ... [2021-12-17 00:38:45,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77003db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:38:45, skipping insertion in model container [2021-12-17 00:38:45,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 12:38:45" (2/3) ... [2021-12-17 00:38:45,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77003db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 12:38:45, skipping insertion in model container [2021-12-17 00:38:45,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 12:38:45" (3/3) ... [2021-12-17 00:38:45,969 INFO L111 eAbstractionObserver]: Analyzing ICFG array1_pattern.c [2021-12-17 00:38:45,972 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 00:38:45,972 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 00:38:46,001 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 00:38:46,006 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 00:38:46,006 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 00:38:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 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) [2021-12-17 00:38:46,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-17 00:38:46,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:38:46,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:38:46,058 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:38:46,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:38:46,064 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2021-12-17 00:38:46,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:38:46,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880055377] [2021-12-17 00:38:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:38:46,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:38:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:38:46,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 00:38:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:38:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:38:46,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:38:46,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880055377] [2021-12-17 00:38:46,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880055377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:38:46,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:38:46,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 00:38:46,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968275760] [2021-12-17 00:38:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:38:46,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 00:38:46,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:38:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 00:38:46,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 00:38:46,237 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 00:38:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:38:46,252 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2021-12-17 00:38:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 00:38:46,253 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-17 00:38:46,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:38:46,262 INFO L225 Difference]: With dead ends: 47 [2021-12-17 00:38:46,262 INFO L226 Difference]: Without dead ends: 21 [2021-12-17 00:38:46,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 00:38:46,269 INFO L933 BasicCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:38:46,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:38:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-17 00:38:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-17 00:38:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 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) [2021-12-17 00:38:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-17 00:38:46,305 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2021-12-17 00:38:46,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:38:46,306 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-17 00:38:46,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 00:38:46,306 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-17 00:38:46,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-17 00:38:46,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:38:46,309 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:38:46,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 00:38:46,310 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:38:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:38:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2021-12-17 00:38:46,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:38:46,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004875178] [2021-12-17 00:38:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:38:46,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:38:46,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:38:46,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742726713] [2021-12-17 00:38:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:38:46,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:38:46,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:38:46,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:38:46,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 00:38:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:38:46,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 00:38:46,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:38:46,502 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:38:46,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:38:46,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:38:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004875178] [2021-12-17 00:38:46,503 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:38:46,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742726713] [2021-12-17 00:38:46,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742726713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:38:46,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:38:46,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 00:38:46,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969338619] [2021-12-17 00:38:46,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:38:46,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 00:38:46,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:38:46,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 00:38:46,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 00:38:46,510 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-12-17 00:38:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:38:46,534 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-12-17 00:38:46,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 00:38:46,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) Word has length 22 [2021-12-17 00:38:46,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:38:46,538 INFO L225 Difference]: With dead ends: 26 [2021-12-17 00:38:46,538 INFO L226 Difference]: Without dead ends: 22 [2021-12-17 00:38:46,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-17 00:38:46,540 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:38:46,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 54 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:38:46,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-17 00:38:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-17 00:38:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-12-17 00:38:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-12-17 00:38:46,552 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2021-12-17 00:38:46,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:38:46,553 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-12-17 00:38:46,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-12-17 00:38:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-12-17 00:38:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 00:38:46,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:38:46,554 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:38:46,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 00:38:46,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:38:46,764 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:38:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:38:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2021-12-17 00:38:46,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:38:46,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502845057] [2021-12-17 00:38:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:38:46,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:38:46,792 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:38:46,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305657204] [2021-12-17 00:38:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:38:46,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:38:46,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:38:46,794 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:38:46,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 00:38:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:38:46,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-17 00:38:46,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:38:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:38:46,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 00:38:46,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:38:46,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502845057] [2021-12-17 00:38:46,946 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:38:46,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305657204] [2021-12-17 00:38:46,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305657204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 00:38:46,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 00:38:46,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 00:38:46,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594417061] [2021-12-17 00:38:46,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 00:38:46,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 00:38:46,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:38:46,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 00:38:46,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 00:38:46,949 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:38:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:38:46,992 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-12-17 00:38:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 00:38:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2021-12-17 00:38:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:38:46,995 INFO L225 Difference]: With dead ends: 41 [2021-12-17 00:38:46,995 INFO L226 Difference]: Without dead ends: 25 [2021-12-17 00:38:46,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-17 00:38:46,997 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:38:46,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 59 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:38:46,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-17 00:38:47,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-12-17 00:38:47,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 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) [2021-12-17 00:38:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-12-17 00:38:47,005 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2021-12-17 00:38:47,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:38:47,005 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-12-17 00:38:47,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:38:47,006 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-12-17 00:38:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-17 00:38:47,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:38:47,007 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:38:47,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-17 00:38:47,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-17 00:38:47,224 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:38:47,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:38:47,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2021-12-17 00:38:47,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:38:47,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888181150] [2021-12-17 00:38:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:38:47,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:38:47,244 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:38:47,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618908015] [2021-12-17 00:38:47,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:38:47,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:38:47,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:38:47,248 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:38:47,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 00:38:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:38:47,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 43 conjunts are in the unsatisfiable core [2021-12-17 00:38:47,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:38:47,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-17 00:38:47,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:38:47,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2021-12-17 00:38:47,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:38:47,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 94 [2021-12-17 00:38:47,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 87 [2021-12-17 00:38:47,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 00:38:47,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:38:47,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 90 [2021-12-17 00:38:47,767 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:38:47,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:38:47,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 9 [2021-12-17 00:38:48,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 00:38:48,019 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-17 00:38:48,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 17 [2021-12-17 00:38:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:38:48,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:38:50,181 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (mod (+ (* |c_ULTIMATE.start_main_~index~0#1| 4294967295) c_~ARR_SIZE~0 4294967295) 4294967296))) (and (or (forall ((|ULTIMATE.start_main_~#array1~0#1.offset| Int)) (= (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~index~0#1|))))) (let ((.cse0 (store (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod (+ c_~ARR_SIZE~0 (* |c_ULTIMATE.start_main_~index~0#1| 4294967295) 4294967295) 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| (- 17179869184)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~index~0#1|)))) (+ (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store .cse1 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|) |ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|))) 0)) (<= .cse2 2147483647)) (or (forall ((|ULTIMATE.start_main_~#array1~0#1.offset| Int)) (= (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~index~0#1|))))) (let ((.cse4 (store (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod (+ c_~ARR_SIZE~0 (* |c_ULTIMATE.start_main_~index~0#1| 4294967295) 4294967295) 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~index~0#1|)))) (+ (select (select (store .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse4) |c_ULTIMATE.start_main_~#array1~0#1.base|) |ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|))) 0)) (< 2147483647 .cse2)))) is different from false [2021-12-17 00:38:54,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:38:54,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888181150] [2021-12-17 00:38:54,491 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:38:54,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618908015] [2021-12-17 00:38:54,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618908015] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:38:54,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:38:54,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-17 00:38:54,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393607490] [2021-12-17 00:38:54,491 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:38:54,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 00:38:54,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:38:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 00:38:54,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=244, Unknown=3, NotChecked=32, Total=342 [2021-12-17 00:38:54,493 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 13 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:38:54,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:38:54,604 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-12-17 00:38:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 00:38:54,605 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 13 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2021-12-17 00:38:54,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:38:54,606 INFO L225 Difference]: With dead ends: 49 [2021-12-17 00:38:54,606 INFO L226 Difference]: Without dead ends: 45 [2021-12-17 00:38:54,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=76, Invalid=305, Unknown=3, NotChecked=36, Total=420 [2021-12-17 00:38:54,607 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:38:54,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 114 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2021-12-17 00:38:54,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-17 00:38:54,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 36. [2021-12-17 00:38:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 00:38:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-12-17 00:38:54,611 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 26 [2021-12-17 00:38:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:38:54,611 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-12-17 00:38:54,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 13 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:38:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-12-17 00:38:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 00:38:54,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:38:54,612 INFO L514 BasicCegarLoop]: 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] [2021-12-17 00:38:54,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 00:38:54,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:38:54,813 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:38:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:38:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1336652411, now seen corresponding path program 2 times [2021-12-17 00:38:54,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:38:54,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953397531] [2021-12-17 00:38:54,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:38:54,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:38:54,832 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:38:54,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144975708] [2021-12-17 00:38:54,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 00:38:54,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:38:54,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:38:54,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:38:54,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 00:38:54,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 00:38:54,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:38:54,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 00:38:54,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:38:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:38:54,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:38:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:38:55,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:38:55,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953397531] [2021-12-17 00:38:55,012 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:38:55,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144975708] [2021-12-17 00:38:55,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144975708] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:38:55,013 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:38:55,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-17 00:38:55,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292357076] [2021-12-17 00:38:55,013 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:38:55,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 00:38:55,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:38:55,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 00:38:55,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-17 00:38:55,014 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:38:55,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:38:55,094 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2021-12-17 00:38:55,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 00:38:55,094 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2021-12-17 00:38:55,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:38:55,095 INFO L225 Difference]: With dead ends: 67 [2021-12-17 00:38:55,095 INFO L226 Difference]: Without dead ends: 57 [2021-12-17 00:38:55,095 INFO L932 BasicCegarLoop]: 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 [2021-12-17 00:38:55,096 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 00:38:55,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 84 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 00:38:55,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-17 00:38:55,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-12-17 00:38:55,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.135135135135135) internal successors, (42), 37 states have internal predecessors, (42), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 00:38:55,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-12-17 00:38:55,101 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 28 [2021-12-17 00:38:55,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:38:55,101 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-12-17 00:38:55,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:38:55,102 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-12-17 00:38:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 00:38:55,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:38:55,102 INFO L514 BasicCegarLoop]: 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] [2021-12-17 00:38:55,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 00:38:55,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:38:55,315 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:38:55,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:38:55,316 INFO L85 PathProgramCache]: Analyzing trace with hash -178408891, now seen corresponding path program 3 times [2021-12-17 00:38:55,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:38:55,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717343493] [2021-12-17 00:38:55,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:38:55,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:38:55,334 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:38:55,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047155026] [2021-12-17 00:38:55,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 00:38:55,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:38:55,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:38:55,338 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:38:55,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-17 00:38:55,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-17 00:38:55,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:38:55,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-17 00:38:55,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:38:55,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-17 00:38:55,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:38:55,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 86 [2021-12-17 00:38:55,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 83 [2021-12-17 00:38:55,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:38:55,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 71 [2021-12-17 00:38:55,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:38:55,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 5 [2021-12-17 00:38:55,801 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:38:55,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 45 [2021-12-17 00:38:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-17 00:38:55,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:38:56,072 INFO L354 Elim1Store]: treesize reduction 20, result has 64.3 percent of original size [2021-12-17 00:38:56,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 160 treesize of output 176 [2021-12-17 00:38:56,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 00:38:56,086 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:38:56,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 125 treesize of output 132 [2021-12-17 00:38:56,112 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:38:56,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 61 [2021-12-17 00:38:56,255 INFO L354 Elim1Store]: treesize reduction 19, result has 58.7 percent of original size [2021-12-17 00:38:56,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 63 treesize of output 77 [2021-12-17 00:38:56,273 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:38:56,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2021-12-17 00:38:56,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 6 [2021-12-17 00:38:56,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 6 [2021-12-17 00:38:56,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 6 [2021-12-17 00:38:56,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 6 [2021-12-17 00:38:56,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 6 [2021-12-17 00:38:56,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 6 [2021-12-17 00:38:56,691 INFO L354 Elim1Store]: treesize reduction 63, result has 61.6 percent of original size [2021-12-17 00:38:56,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 172 treesize of output 233 [2021-12-17 00:38:56,780 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:38:56,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 157 [2021-12-17 00:38:56,917 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:38:56,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 157 [2021-12-17 00:39:00,968 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:39:00,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 59 [2021-12-17 00:39:01,013 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-17 00:39:01,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 124 [2021-12-17 00:39:01,149 INFO L354 Elim1Store]: treesize reduction 147, result has 32.3 percent of original size [2021-12-17 00:39:01,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 128 treesize of output 151 [2021-12-17 00:39:01,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:01,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717343493] [2021-12-17 00:39:01,809 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:01,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047155026] [2021-12-17 00:39:01,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047155026] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:39:01,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:39:01,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-12-17 00:39:01,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876137368] [2021-12-17 00:39:01,810 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:39:01,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 00:39:01,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 00:39:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-12-17 00:39:01,811 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:39:01,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:01,979 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-12-17 00:39:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 00:39:01,980 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2021-12-17 00:39:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:01,980 INFO L225 Difference]: With dead ends: 53 [2021-12-17 00:39:01,980 INFO L226 Difference]: Without dead ends: 29 [2021-12-17 00:39:01,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2021-12-17 00:39:01,981 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:01,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 76 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2021-12-17 00:39:01,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-17 00:39:01,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2021-12-17 00:39:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 23 states have internal predecessors, (26), 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) [2021-12-17 00:39:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-17 00:39:01,984 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 28 [2021-12-17 00:39:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:01,984 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-17 00:39:01,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:39:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-17 00:39:01,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-17 00:39:01,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:01,984 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:02,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:02,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:02,185 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 400980999, now seen corresponding path program 4 times [2021-12-17 00:39:02,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:02,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724084648] [2021-12-17 00:39:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:02,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:02,196 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:02,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [389156756] [2021-12-17 00:39:02,197 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 00:39:02,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:02,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:02,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:02,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-17 00:39:02,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 00:39:02,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:39:02,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-17 00:39:02,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:02,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-17 00:39:02,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:02,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2021-12-17 00:39:02,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2021-12-17 00:39:02,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:39:02,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:39:02,441 INFO L354 Elim1Store]: treesize reduction 78, result has 24.3 percent of original size [2021-12-17 00:39:02,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 53 [2021-12-17 00:39:03,018 INFO L354 Elim1Store]: treesize reduction 68, result has 25.3 percent of original size [2021-12-17 00:39:03,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 134 [2021-12-17 00:39:03,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 112 [2021-12-17 00:39:03,069 INFO L354 Elim1Store]: treesize reduction 165, result has 18.7 percent of original size [2021-12-17 00:39:03,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 114 [2021-12-17 00:39:03,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:03,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:03,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:03,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:03,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 32 [2021-12-17 00:39:04,804 INFO L354 Elim1Store]: treesize reduction 80, result has 8.0 percent of original size [2021-12-17 00:39:04,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 110 treesize of output 53 [2021-12-17 00:39:04,845 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:39:04,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:39:07,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:07,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724084648] [2021-12-17 00:39:07,816 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:07,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389156756] [2021-12-17 00:39:07,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389156756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:39:07,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:39:07,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-12-17 00:39:07,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874206469] [2021-12-17 00:39:07,816 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:39:07,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-17 00:39:07,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-17 00:39:07,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=505, Unknown=1, NotChecked=0, Total=600 [2021-12-17 00:39:07,817 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 17 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:39:08,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:08,132 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-12-17 00:39:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 00:39:08,133 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 17 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2021-12-17 00:39:08,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:08,133 INFO L225 Difference]: With dead ends: 59 [2021-12-17 00:39:08,133 INFO L226 Difference]: Without dead ends: 55 [2021-12-17 00:39:08,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=142, Invalid=727, Unknown=1, NotChecked=0, Total=870 [2021-12-17 00:39:08,134 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:08,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 174 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 78 Invalid, 0 Unknown, 145 Unchecked, 0.1s Time] [2021-12-17 00:39:08,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-17 00:39:08,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 50. [2021-12-17 00:39:08,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:39:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-12-17 00:39:08,139 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 30 [2021-12-17 00:39:08,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:08,139 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-12-17 00:39:08,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 17 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:39:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-12-17 00:39:08,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-17 00:39:08,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:08,140 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:08,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:08,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:08,353 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:08,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:08,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1151083191, now seen corresponding path program 5 times [2021-12-17 00:39:08,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:08,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312717339] [2021-12-17 00:39:08,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:08,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:08,363 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:08,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [970826771] [2021-12-17 00:39:08,369 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-17 00:39:08,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:08,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:08,370 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:08,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-17 00:39:08,425 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-17 00:39:08,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:39:08,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:39:08,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:08,510 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:39:08,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:39:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:39:08,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:08,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312717339] [2021-12-17 00:39:08,582 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:08,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970826771] [2021-12-17 00:39:08,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970826771] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:39:08,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:39:08,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-17 00:39:08,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525708587] [2021-12-17 00:39:08,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:39:08,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 00:39:08,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:08,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 00:39:08,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 00:39:08,584 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:39:08,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:08,675 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2021-12-17 00:39:08,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 00:39:08,676 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-12-17 00:39:08,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:08,676 INFO L225 Difference]: With dead ends: 81 [2021-12-17 00:39:08,676 INFO L226 Difference]: Without dead ends: 69 [2021-12-17 00:39:08,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-17 00:39:08,677 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 68 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:08,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 94 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:39:08,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-17 00:39:08,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2021-12-17 00:39:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 00:39:08,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-12-17 00:39:08,682 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 32 [2021-12-17 00:39:08,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:08,683 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-12-17 00:39:08,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:39:08,683 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-12-17 00:39:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-17 00:39:08,683 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:08,684 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:08,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:08,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:08,895 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash -475590135, now seen corresponding path program 6 times [2021-12-17 00:39:08,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:08,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677371597] [2021-12-17 00:39:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:08,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:08,916 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:08,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552794781] [2021-12-17 00:39:08,920 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-17 00:39:08,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:08,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:08,921 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:08,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-17 00:39:09,012 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-17 00:39:09,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:39:09,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 00:39:09,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:09,090 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:39:09,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:39:09,153 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:39:09,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677371597] [2021-12-17 00:39:09,153 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:09,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552794781] [2021-12-17 00:39:09,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552794781] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:39:09,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:39:09,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-17 00:39:09,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470723460] [2021-12-17 00:39:09,154 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:39:09,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 00:39:09,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 00:39:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-17 00:39:09,155 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:39:09,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:09,255 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2021-12-17 00:39:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 00:39:09,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-12-17 00:39:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:09,256 INFO L225 Difference]: With dead ends: 66 [2021-12-17 00:39:09,256 INFO L226 Difference]: Without dead ends: 62 [2021-12-17 00:39:09,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-17 00:39:09,257 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:09,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 83 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:39:09,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-17 00:39:09,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 57. [2021-12-17 00:39:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 48 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 00:39:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-12-17 00:39:09,262 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 32 [2021-12-17 00:39:09,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:09,262 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-12-17 00:39:09,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:39:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-12-17 00:39:09,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-17 00:39:09,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:09,263 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:09,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:09,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-17 00:39:09,479 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:09,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:09,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 7 times [2021-12-17 00:39:09,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:09,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646809203] [2021-12-17 00:39:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:09,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:09,490 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:09,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761818563] [2021-12-17 00:39:09,490 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-17 00:39:09,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:09,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:09,491 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:09,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-17 00:39:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:39:09,662 WARN L261 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-17 00:39:09,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:09,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-17 00:39:09,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:09,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2021-12-17 00:39:09,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:39:09,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-17 00:39:09,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:09,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:09,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2021-12-17 00:39:09,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:09,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:09,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:09,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:09,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:09,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:09,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2021-12-17 00:39:10,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,442 INFO L354 Elim1Store]: treesize reduction 72, result has 34.5 percent of original size [2021-12-17 00:39:10,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 159 treesize of output 164 [2021-12-17 00:39:10,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 132 [2021-12-17 00:39:10,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:10,501 INFO L354 Elim1Store]: treesize reduction 100, result has 31.5 percent of original size [2021-12-17 00:39:10,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 144 [2021-12-17 00:39:10,532 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:10,557 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:10,613 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:11,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:11,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:11,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:11,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:11,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:11,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 189 treesize of output 153 [2021-12-17 00:39:17,098 INFO L354 Elim1Store]: treesize reduction 10, result has 87.8 percent of original size [2021-12-17 00:39:17,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 190 treesize of output 164 [2021-12-17 00:39:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:39:17,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:39:18,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:18,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646809203] [2021-12-17 00:39:18,955 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:18,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761818563] [2021-12-17 00:39:18,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761818563] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:39:18,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:39:18,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-12-17 00:39:18,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333507684] [2021-12-17 00:39:18,956 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:39:18,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-17 00:39:18,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:18,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-17 00:39:18,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2021-12-17 00:39:18,957 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 19 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:39:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:19,402 INFO L93 Difference]: Finished difference Result 87 states and 96 transitions. [2021-12-17 00:39:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 00:39:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 19 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-17 00:39:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:19,404 INFO L225 Difference]: With dead ends: 87 [2021-12-17 00:39:19,404 INFO L226 Difference]: Without dead ends: 83 [2021-12-17 00:39:19,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2021-12-17 00:39:19,405 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:19,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 261 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 146 Invalid, 0 Unknown, 206 Unchecked, 0.2s Time] [2021-12-17 00:39:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-17 00:39:19,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2021-12-17 00:39:19,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-17 00:39:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2021-12-17 00:39:19,411 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 34 [2021-12-17 00:39:19,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:19,415 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2021-12-17 00:39:19,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 19 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:39:19,415 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2021-12-17 00:39:19,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-17 00:39:19,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:19,416 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:19,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:19,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-17 00:39:19,619 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:19,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:19,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1565541619, now seen corresponding path program 8 times [2021-12-17 00:39:19,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:19,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862469676] [2021-12-17 00:39:19,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:19,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:19,631 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:19,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597890769] [2021-12-17 00:39:19,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 00:39:19,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:19,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:19,632 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:19,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-17 00:39:19,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 00:39:19,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:39:19,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 00:39:19,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:39:19,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:39:19,849 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:39:19,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:19,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862469676] [2021-12-17 00:39:19,850 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:19,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597890769] [2021-12-17 00:39:19,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597890769] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:39:19,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:39:19,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-17 00:39:19,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881552884] [2021-12-17 00:39:19,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:39:19,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 00:39:19,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 00:39:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-17 00:39:19,851 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:39:20,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:20,019 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2021-12-17 00:39:20,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 00:39:20,019 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-17 00:39:20,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:20,020 INFO L225 Difference]: With dead ends: 113 [2021-12-17 00:39:20,020 INFO L226 Difference]: Without dead ends: 99 [2021-12-17 00:39:20,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=394, Unknown=0, NotChecked=0, Total=552 [2021-12-17 00:39:20,021 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 117 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:20,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 106 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 00:39:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-17 00:39:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 78. [2021-12-17 00:39:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.1076923076923078) internal successors, (72), 65 states have internal predecessors, (72), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 00:39:20,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2021-12-17 00:39:20,028 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 36 [2021-12-17 00:39:20,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:20,028 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2021-12-17 00:39:20,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:39:20,029 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2021-12-17 00:39:20,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-17 00:39:20,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:20,029 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:20,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:20,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-17 00:39:20,239 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash -956776499, now seen corresponding path program 9 times [2021-12-17 00:39:20,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:20,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747636029] [2021-12-17 00:39:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:20,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:20,255 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:20,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115874676] [2021-12-17 00:39:20,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-17 00:39:20,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:20,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:20,259 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:20,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-17 00:39:20,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-17 00:39:20,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:39:20,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-17 00:39:20,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:39:20,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:39:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:39:20,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:39:20,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747636029] [2021-12-17 00:39:20,539 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:39:20,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115874676] [2021-12-17 00:39:20,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115874676] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:39:20,539 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:39:20,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-17 00:39:20,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506065292] [2021-12-17 00:39:20,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:39:20,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-17 00:39:20,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:39:20,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-17 00:39:20,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-12-17 00:39:20,540 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:39:21,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:39:21,122 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2021-12-17 00:39:21,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 00:39:21,123 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2021-12-17 00:39:21,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:39:21,123 INFO L225 Difference]: With dead ends: 98 [2021-12-17 00:39:21,123 INFO L226 Difference]: Without dead ends: 94 [2021-12-17 00:39:21,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2021-12-17 00:39:21,124 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 57 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 00:39:21,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 171 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 00:39:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-12-17 00:39:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2021-12-17 00:39:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-17 00:39:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2021-12-17 00:39:21,131 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 36 [2021-12-17 00:39:21,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:39:21,131 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2021-12-17 00:39:21,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:39:21,131 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2021-12-17 00:39:21,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-17 00:39:21,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:39:21,132 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:39:21,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-17 00:39:21,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-17 00:39:21,335 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:39:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:39:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2067066744, now seen corresponding path program 1 times [2021-12-17 00:39:21,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:39:21,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726378217] [2021-12-17 00:39:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:21,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:39:21,351 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:39:21,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [618896010] [2021-12-17 00:39:21,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:39:21,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:39:21,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:39:21,353 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:39:21,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-17 00:39:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:39:21,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-17 00:39:21,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:39:21,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-17 00:39:21,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:21,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2021-12-17 00:39:21,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:39:21,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-17 00:39:21,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:21,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:21,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2021-12-17 00:39:21,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:21,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:22,017 INFO L354 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2021-12-17 00:39:22,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 150 treesize of output 137 [2021-12-17 00:39:22,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 115 [2021-12-17 00:39:22,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:22,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:22,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:22,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:22,061 INFO L354 Elim1Store]: treesize reduction 69, result has 27.4 percent of original size [2021-12-17 00:39:22,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 114 [2021-12-17 00:39:22,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:22,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:22,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:22,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 34 [2021-12-17 00:39:24,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,350 INFO L354 Elim1Store]: treesize reduction 158, result has 14.1 percent of original size [2021-12-17 00:39:24,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 191 treesize of output 182 [2021-12-17 00:39:24,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 139 [2021-12-17 00:39:24,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,416 INFO L354 Elim1Store]: treesize reduction 184, result has 12.4 percent of original size [2021-12-17 00:39:24,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 104 treesize of output 142 [2021-12-17 00:39:24,497 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:39:24,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-17 00:39:24,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:39:24,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 73 [2021-12-17 00:39:25,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 31 [2021-12-17 00:39:25,419 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:39:25,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:40:52,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:40:52,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726378217] [2021-12-17 00:40:52,875 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:40:52,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618896010] [2021-12-17 00:40:52,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618896010] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:40:52,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:40:52,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-12-17 00:40:52,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695214367] [2021-12-17 00:40:52,876 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:40:52,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-17 00:40:52,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:40:52,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-17 00:40:52,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=965, Unknown=12, NotChecked=0, Total=1122 [2021-12-17 00:40:52,877 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 23 states, 23 states have (on average 1.391304347826087) internal successors, (32), 19 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 00:40:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:40:53,513 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2021-12-17 00:40:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-17 00:40:53,514 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.391304347826087) internal successors, (32), 19 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 38 [2021-12-17 00:40:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:40:53,514 INFO L225 Difference]: With dead ends: 102 [2021-12-17 00:40:53,514 INFO L226 Difference]: Without dead ends: 92 [2021-12-17 00:40:53,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=164, Invalid=1084, Unknown=12, NotChecked=0, Total=1260 [2021-12-17 00:40:53,515 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:40:53,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 235 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 168 Invalid, 0 Unknown, 100 Unchecked, 0.2s Time] [2021-12-17 00:40:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-17 00:40:53,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 88. [2021-12-17 00:40:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 73 states have (on average 1.095890410958904) internal successors, (80), 73 states have internal predecessors, (80), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-17 00:40:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2021-12-17 00:40:53,523 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 38 [2021-12-17 00:40:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:40:53,523 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2021-12-17 00:40:53,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.391304347826087) internal successors, (32), 19 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 00:40:53,524 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2021-12-17 00:40:53,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-17 00:40:53,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:40:53,524 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:40:53,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-17 00:40:53,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-17 00:40:53,736 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:40:53,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:40:53,736 INFO L85 PathProgramCache]: Analyzing trace with hash -285980785, now seen corresponding path program 10 times [2021-12-17 00:40:53,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:40:53,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539739068] [2021-12-17 00:40:53,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:40:53,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:40:53,747 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:40:53,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930952727] [2021-12-17 00:40:53,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-17 00:40:53,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:40:53,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:40:53,748 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 00:40:53,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-17 00:40:53,957 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-17 00:40:53,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:40:53,960 WARN L261 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 100 conjunts are in the unsatisfiable core [2021-12-17 00:40:53,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:40:53,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-17 00:40:54,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2021-12-17 00:40:54,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2021-12-17 00:40:54,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:40:54,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:40:54,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2021-12-17 00:40:54,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 67 [2021-12-17 00:40:54,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:54,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 97 [2021-12-17 00:40:55,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,134 INFO L354 Elim1Store]: treesize reduction 96, result has 35.6 percent of original size [2021-12-17 00:40:55,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 13 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 4 case distinctions, treesize of input 177 treesize of output 194 [2021-12-17 00:40:55,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 152 [2021-12-17 00:40:55,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,212 INFO L354 Elim1Store]: treesize reduction 131, result has 33.5 percent of original size [2021-12-17 00:40:55,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 93 treesize of output 174 [2021-12-17 00:40:55,224 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:40:55,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:40:55,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 85 treesize of output 49 [2021-12-17 00:41:00,723 INFO L354 Elim1Store]: treesize reduction 27, result has 75.2 percent of original size [2021-12-17 00:41:00,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 7 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 8 case distinctions, treesize of input 184 treesize of output 182 [2021-12-17 00:41:00,927 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:41:00,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:41:18,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:41:18,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539739068] [2021-12-17 00:41:18,382 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:41:18,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930952727] [2021-12-17 00:41:18,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930952727] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:41:18,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:41:18,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2021-12-17 00:41:18,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111039061] [2021-12-17 00:41:18,382 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:41:18,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-17 00:41:18,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:41:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-17 00:41:18,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1171, Unknown=3, NotChecked=0, Total=1332 [2021-12-17 00:41:18,383 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 25 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:41:18,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:41:18,960 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2021-12-17 00:41:18,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-17 00:41:18,961 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 25 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2021-12-17 00:41:18,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:41:18,962 INFO L225 Difference]: With dead ends: 126 [2021-12-17 00:41:18,962 INFO L226 Difference]: Without dead ends: 122 [2021-12-17 00:41:18,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=196, Invalid=1441, Unknown=3, NotChecked=0, Total=1640 [2021-12-17 00:41:18,963 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 42 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 333 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:41:18,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 234 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 175 Invalid, 0 Unknown, 333 Unchecked, 0.2s Time] [2021-12-17 00:41:18,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-17 00:41:18,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 101. [2021-12-17 00:41:18,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 84 states have (on average 1.1071428571428572) internal successors, (93), 84 states have internal predecessors, (93), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-17 00:41:18,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 109 transitions. [2021-12-17 00:41:18,973 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 109 transitions. Word has length 38 [2021-12-17 00:41:18,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:41:18,973 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 109 transitions. [2021-12-17 00:41:18,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 25 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 00:41:18,973 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 109 transitions. [2021-12-17 00:41:18,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-17 00:41:18,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:18,974 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:41:18,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-17 00:41:19,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-17 00:41:19,187 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:19,188 INFO L85 PathProgramCache]: Analyzing trace with hash 103605969, now seen corresponding path program 11 times [2021-12-17 00:41:19,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:19,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351721836] [2021-12-17 00:41:19,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:19,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:19,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:41:19,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513012451] [2021-12-17 00:41:19,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-17 00:41:19,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:19,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:19,206 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) [2021-12-17 00:41:19,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-17 00:41:19,310 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-17 00:41:19,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:41:19,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-17 00:41:19,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:41:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:41:19,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:41:19,528 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:41:19,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:41:19,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351721836] [2021-12-17 00:41:19,529 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:41:19,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513012451] [2021-12-17 00:41:19,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513012451] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:41:19,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:41:19,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2021-12-17 00:41:19,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702327056] [2021-12-17 00:41:19,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:41:19,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-17 00:41:19,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:41:19,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-17 00:41:19,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-12-17 00:41:19,530 INFO L87 Difference]: Start difference. First operand 101 states and 109 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:41:19,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:41:19,889 INFO L93 Difference]: Finished difference Result 157 states and 164 transitions. [2021-12-17 00:41:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-17 00:41:19,889 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2021-12-17 00:41:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:41:19,890 INFO L225 Difference]: With dead ends: 157 [2021-12-17 00:41:19,890 INFO L226 Difference]: Without dead ends: 141 [2021-12-17 00:41:19,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=281, Invalid=775, Unknown=0, NotChecked=0, Total=1056 [2021-12-17 00:41:19,891 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 130 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:41:19,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 148 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 00:41:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-17 00:41:19,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 109. [2021-12-17 00:41:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 1.1) internal successors, (99), 90 states have internal predecessors, (99), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-17 00:41:19,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2021-12-17 00:41:19,899 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 40 [2021-12-17 00:41:19,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:41:19,899 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2021-12-17 00:41:19,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:41:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2021-12-17 00:41:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-17 00:41:19,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:19,900 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:41:19,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-17 00:41:20,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:20,111 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:20,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:20,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1011334033, now seen corresponding path program 12 times [2021-12-17 00:41:20,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:20,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164750728] [2021-12-17 00:41:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:20,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:20,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:41:20,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182702545] [2021-12-17 00:41:20,124 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-17 00:41:20,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:20,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:20,125 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) [2021-12-17 00:41:20,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-17 00:41:20,306 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-17 00:41:20,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:41:20,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-17 00:41:20,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:41:20,417 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 20 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:41:20,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:41:20,529 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 00:41:20,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:41:20,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164750728] [2021-12-17 00:41:20,530 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:41:20,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182702545] [2021-12-17 00:41:20,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182702545] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 00:41:20,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-17 00:41:20,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2021-12-17 00:41:20,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714675361] [2021-12-17 00:41:20,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-17 00:41:20,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-17 00:41:20,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:41:20,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-17 00:41:20,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-12-17 00:41:20,531 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:41:21,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:41:21,278 INFO L93 Difference]: Finished difference Result 140 states and 145 transitions. [2021-12-17 00:41:21,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 00:41:21,278 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2021-12-17 00:41:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:41:21,279 INFO L225 Difference]: With dead ends: 140 [2021-12-17 00:41:21,279 INFO L226 Difference]: Without dead ends: 136 [2021-12-17 00:41:21,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2021-12-17 00:41:21,280 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 75 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 00:41:21,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 156 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 00:41:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-12-17 00:41:21,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 111. [2021-12-17 00:41:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 92 states have internal predecessors, (101), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-17 00:41:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2021-12-17 00:41:21,288 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 40 [2021-12-17 00:41:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:41:21,288 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2021-12-17 00:41:21,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 00:41:21,288 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2021-12-17 00:41:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-17 00:41:21,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:21,289 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:41:21,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-17 00:41:21,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-17 00:41:21,493 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:21,494 INFO L85 PathProgramCache]: Analyzing trace with hash -943992564, now seen corresponding path program 2 times [2021-12-17 00:41:21,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:21,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751390375] [2021-12-17 00:41:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:21,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:21,502 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:41:21,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593968757] [2021-12-17 00:41:21,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 00:41:21,502 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:21,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:21,503 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) [2021-12-17 00:41:21,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-17 00:41:21,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 00:41:21,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 00:41:21,707 WARN L261 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 99 conjunts are in the unsatisfiable core [2021-12-17 00:41:21,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:41:21,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-17 00:41:21,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:21,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2021-12-17 00:41:21,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:41:21,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-17 00:41:21,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:21,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:21,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2021-12-17 00:41:21,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:21,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:21,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:21,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:21,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:21,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:21,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 73 [2021-12-17 00:41:22,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,553 INFO L354 Elim1Store]: treesize reduction 81, result has 31.9 percent of original size [2021-12-17 00:41:22,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 168 treesize of output 167 [2021-12-17 00:41:22,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 135 [2021-12-17 00:41:22,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,612 INFO L354 Elim1Store]: treesize reduction 100, result has 31.5 percent of original size [2021-12-17 00:41:22,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 144 [2021-12-17 00:41:22,670 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:22,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:22,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 35 [2021-12-17 00:41:28,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 189 [2021-12-17 00:41:28,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 146 [2021-12-17 00:41:28,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,756 INFO L354 Elim1Store]: treesize reduction 248, result has 15.6 percent of original size [2021-12-17 00:41:28,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 130 treesize of output 191 [2021-12-17 00:41:28,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:28,846 INFO L354 Elim1Store]: treesize reduction 135, result has 31.5 percent of original size [2021-12-17 00:41:28,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 99 [2021-12-17 00:41:28,924 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:29,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:29,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:29,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:29,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:29,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:29,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:29,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:29,140 INFO L354 Elim1Store]: treesize reduction 27, result has 56.5 percent of original size [2021-12-17 00:41:29,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 223 treesize of output 206 [2021-12-17 00:41:33,162 INFO L354 Elim1Store]: treesize reduction 10, result has 87.8 percent of original size [2021-12-17 00:41:33,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 4 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 282 treesize of output 204 [2021-12-17 00:41:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:41:33,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:41:33,872 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse2 (mod (+ (* |c_ULTIMATE.start_main_~index~0#1| 4294967295) c_~ARR_SIZE~0 4294967295) 4294967296))) (and (or (forall ((v_ArrVal_995 (Array Int Int))) (= (let ((.cse0 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod (+ c_~ARR_SIZE~0 (* |c_ULTIMATE.start_main_~index~0#1| 4294967295) 4294967295) 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~index~0#1|)))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~index~0#1|))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1|))) 0)) (< 2147483647 .cse2)) (or (forall ((v_ArrVal_995 (Array Int Int))) (= (let ((.cse3 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_995) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod (+ c_~ARR_SIZE~0 (* |c_ULTIMATE.start_main_~index~0#1| 4294967295) 4294967295) 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| (- 17179869184)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~index~0#1|)))) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~index~0#1|))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse3) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse4 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse4 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse4 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) |c_ULTIMATE.start_main_~sum~0#1|))) 0)) (<= .cse2 2147483647)))) (<= c_~ARR_SIZE~0 2)) is different from false [2021-12-17 00:41:37,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 00:41:37,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751390375] [2021-12-17 00:41:37,623 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-17 00:41:37,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593968757] [2021-12-17 00:41:37,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593968757] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 00:41:37,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-17 00:41:37,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2021-12-17 00:41:37,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832573301] [2021-12-17 00:41:37,624 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-17 00:41:37,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-17 00:41:37,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 00:41:37,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-17 00:41:37,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1016, Unknown=9, NotChecked=66, Total=1260 [2021-12-17 00:41:37,625 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 24 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 00:41:38,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 00:41:38,007 INFO L93 Difference]: Finished difference Result 149 states and 156 transitions. [2021-12-17 00:41:38,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-17 00:41:38,008 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 24 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-12-17 00:41:38,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 00:41:38,008 INFO L225 Difference]: With dead ends: 149 [2021-12-17 00:41:38,008 INFO L226 Difference]: Without dead ends: 137 [2021-12-17 00:41:38,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=231, Invalid=1246, Unknown=9, NotChecked=74, Total=1560 [2021-12-17 00:41:38,009 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 49 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 00:41:38,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 266 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 166 Invalid, 0 Unknown, 250 Unchecked, 0.2s Time] [2021-12-17 00:41:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-17 00:41:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 119. [2021-12-17 00:41:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 98 states have (on average 1.0918367346938775) internal successors, (107), 98 states have internal predecessors, (107), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-17 00:41:38,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 127 transitions. [2021-12-17 00:41:38,017 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 127 transitions. Word has length 42 [2021-12-17 00:41:38,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 00:41:38,018 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 127 transitions. [2021-12-17 00:41:38,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.3333333333333333) internal successors, (36), 24 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-17 00:41:38,018 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 127 transitions. [2021-12-17 00:41:38,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-17 00:41:38,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 00:41:38,018 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 00:41:38,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-17 00:41:38,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-17 00:41:38,231 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 00:41:38,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 00:41:38,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1282630227, now seen corresponding path program 13 times [2021-12-17 00:41:38,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 00:41:38,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501689121] [2021-12-17 00:41:38,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 00:41:38,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 00:41:38,242 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-17 00:41:38,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184190554] [2021-12-17 00:41:38,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-17 00:41:38,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 00:41:38,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 00:41:38,244 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) [2021-12-17 00:41:38,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-17 00:41:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 00:41:38,577 WARN L261 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 114 conjunts are in the unsatisfiable core [2021-12-17 00:41:38,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 00:41:38,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-17 00:41:38,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2021-12-17 00:41:38,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-12-17 00:41:38,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2021-12-17 00:41:38,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 43 [2021-12-17 00:41:38,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 73 [2021-12-17 00:41:38,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:38,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 91 [2021-12-17 00:41:39,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 21 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 115 [2021-12-17 00:41:39,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,937 INFO L354 Elim1Store]: treesize reduction 120, result has 36.2 percent of original size [2021-12-17 00:41:39,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 11 new quantified variables, introduced 5 case distinctions, treesize of input 195 treesize of output 224 [2021-12-17 00:41:39,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 194 treesize of output 172 [2021-12-17 00:41:39,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:39,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:40,039 INFO L354 Elim1Store]: treesize reduction 162, result has 34.7 percent of original size [2021-12-17 00:41:40,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 16 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 100 treesize of output 204 [2021-12-17 00:41:40,053 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:40,106 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:40,156 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:40,242 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-17 00:41:41,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-17 00:41:41,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 346 treesize of output 302 [2021-12-17 00:42:08,905 INFO L354 Elim1Store]: treesize reduction 27, result has 80.1 percent of original size [2021-12-17 00:42:08,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 11 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 10 case distinctions, treesize of input 357 treesize of output 287 [2021-12-17 00:42:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 00:42:09,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 00:45:46,290 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~nondet6#1| Int)) (or (< |ULTIMATE.start_main_#t~nondet6#1| 0) (and (forall ((aux_div_~ARR_SIZE~0_93 Int) (aux_mod_~ARR_SIZE~0_93 Int)) (let ((.cse0 (+ (* 4294967296 aux_div_~ARR_SIZE~0_93) aux_mod_~ARR_SIZE~0_93)) (.cse1 (* 4294967295 |ULTIMATE.start_main_#t~nondet6#1|))) (or (<= .cse0 (+ (* 4294967296 |ULTIMATE.start_main_#t~nondet6#1|) 4294967295)) (<= aux_mod_~ARR_SIZE~0_93 2147483647) (<= 4294967296 aux_mod_~ARR_SIZE~0_93) (< (+ .cse1 |c_ULTIMATE.start_main_~count~0#1| 4294967298) .cse0) (= (let ((.cse4 (let ((.cse5 (let ((.cse7 (* |c_ULTIMATE.start_main_~count~0#1| 4))) (let ((.cse6 (let ((.cse8 (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset| 4) 0)))) (store .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| 4) 0))))) (store .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset| 8) 0))))) (store .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| 8) 0)))))) (store .cse5 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* |ULTIMATE.start_main_#t~nondet6#1| 4) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))))) (let ((.cse3 (store (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod aux_mod_~ARR_SIZE~0_93 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| (- 17179869184)) (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))) (let ((.cse2 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse3) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 16)) (select .cse2 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) |c_ULTIMATE.start_main_~sum~0#1|)))) 0) (<= .cse0 (+ .cse1 |c_ULTIMATE.start_main_~count~0#1| 4294967297))))) (forall ((aux_div_~ARR_SIZE~0_93 Int) (aux_mod_~ARR_SIZE~0_93 Int)) (let ((.cse18 (+ (* 4294967296 aux_div_~ARR_SIZE~0_93) aux_mod_~ARR_SIZE~0_93)) (.cse19 (* 4294967295 |ULTIMATE.start_main_#t~nondet6#1|))) (or (= (let ((.cse12 (let ((.cse13 (let ((.cse15 (* |c_ULTIMATE.start_main_~count~0#1| 4))) (let ((.cse14 (let ((.cse16 (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse15 |c_ULTIMATE.start_main_~#array1~0#1.offset| 4) 0)))) (store .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse15 |c_ULTIMATE.start_main_~#array2~0#1.offset| 4) 0))))) (store .cse16 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse16 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse15 |c_ULTIMATE.start_main_~#array1~0#1.offset| 8) 0))))) (store .cse14 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse14 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse15 |c_ULTIMATE.start_main_~#array2~0#1.offset| 8) 0)))))) (store .cse13 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse13 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* |ULTIMATE.start_main_#t~nondet6#1| 4) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))))) (let ((.cse10 (store (select .cse12 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod aux_mod_~ARR_SIZE~0_93 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))) (let ((.cse11 (select (store .cse12 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse10) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse10 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 16)) (select .cse11 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse10 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse11 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse10 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse11 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse11 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse10 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse11 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse10 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0) (<= .cse18 (+ (* 4294967296 |ULTIMATE.start_main_#t~nondet6#1|) 4294967295)) (< aux_mod_~ARR_SIZE~0_93 0) (< 2147483647 aux_mod_~ARR_SIZE~0_93) (< (+ .cse19 |c_ULTIMATE.start_main_~count~0#1| 4294967298) .cse18) (<= .cse18 (+ .cse19 |c_ULTIMATE.start_main_~count~0#1| 4294967297)))))) (< 32767 |ULTIMATE.start_main_#t~nondet6#1|))) is different from false [2021-12-17 00:47:00,725 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~nondet6#1| Int)) (or (< |ULTIMATE.start_main_#t~nondet6#1| 0) (and (forall ((aux_div_~ARR_SIZE~0_93 Int) (aux_mod_~ARR_SIZE~0_93 Int)) (let ((.cse0 (+ (* 4294967296 aux_div_~ARR_SIZE~0_93) aux_mod_~ARR_SIZE~0_93)) (.cse11 (* 4294967295 |ULTIMATE.start_main_#t~nondet6#1|))) (or (<= .cse0 (+ (* 4294967296 |ULTIMATE.start_main_#t~nondet6#1|) 4294967295)) (<= aux_mod_~ARR_SIZE~0_93 2147483647) (<= 4294967296 aux_mod_~ARR_SIZE~0_93) (= (let ((.cse3 (let ((.cse4 (let ((.cse6 (* |c_ULTIMATE.start_main_~count~0#1| 4))) (let ((.cse5 (let ((.cse7 (let ((.cse8 (let ((.cse9 (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~#array1~0#1.offset|) 0)))) (store .cse10 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 0))))) (store .cse9 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~#array1~0#1.offset| 4) 0))))) (store .cse8 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~#array2~0#1.offset| 4) 0))))) (store .cse7 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~#array1~0#1.offset| 8) 0))))) (store .cse5 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse6 |c_ULTIMATE.start_main_~#array2~0#1.offset| 8) 0)))))) (store .cse4 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse4 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* |ULTIMATE.start_main_#t~nondet6#1| 4) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))))) (let ((.cse1 (store (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod aux_mod_~ARR_SIZE~0_93 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| (- 17179869184)) (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))) (let ((.cse2 (select (store .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 16)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse2 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0) (< (+ .cse11 |c_ULTIMATE.start_main_~count~0#1| 4294967298) .cse0) (<= .cse0 (+ .cse11 |c_ULTIMATE.start_main_~count~0#1| 4294967297))))) (forall ((aux_div_~ARR_SIZE~0_93 Int) (aux_mod_~ARR_SIZE~0_93 Int)) (let ((.cse22 (+ (* 4294967296 aux_div_~ARR_SIZE~0_93) aux_mod_~ARR_SIZE~0_93)) (.cse23 (* 4294967295 |ULTIMATE.start_main_#t~nondet6#1|))) (or (= (let ((.cse14 (let ((.cse15 (let ((.cse17 (* |c_ULTIMATE.start_main_~count~0#1| 4))) (let ((.cse16 (let ((.cse18 (let ((.cse19 (let ((.cse20 (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse17 |c_ULTIMATE.start_main_~#array1~0#1.offset|) 0)))) (store .cse21 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse21 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse17 |c_ULTIMATE.start_main_~#array2~0#1.offset|) 0))))) (store .cse20 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse20 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse17 |c_ULTIMATE.start_main_~#array1~0#1.offset| 4) 0))))) (store .cse19 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse19 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse17 |c_ULTIMATE.start_main_~#array2~0#1.offset| 4) 0))))) (store .cse18 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse18 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse17 |c_ULTIMATE.start_main_~#array1~0#1.offset| 8) 0))))) (store .cse16 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse16 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse17 |c_ULTIMATE.start_main_~#array2~0#1.offset| 8) 0)))))) (store .cse15 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse15 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* |ULTIMATE.start_main_#t~nondet6#1| 4) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))))) (let ((.cse13 (store (select .cse14 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod aux_mod_~ARR_SIZE~0_93 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))) (let ((.cse12 (select (store .cse14 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse13) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse12 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse13 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse13 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse13 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse13 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse13 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 16)) (select .cse12 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse12 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse12 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse12 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) |c_ULTIMATE.start_main_~sum~0#1|)))) 0) (<= .cse22 (+ (* 4294967296 |ULTIMATE.start_main_#t~nondet6#1|) 4294967295)) (< aux_mod_~ARR_SIZE~0_93 0) (< 2147483647 aux_mod_~ARR_SIZE~0_93) (< (+ .cse23 |c_ULTIMATE.start_main_~count~0#1| 4294967298) .cse22) (<= .cse22 (+ .cse23 |c_ULTIMATE.start_main_~count~0#1| 4294967297)))))) (< 32767 |ULTIMATE.start_main_#t~nondet6#1|))) is different from false [2021-12-17 00:47:58,368 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~nondet6#1| Int)) (or (< |ULTIMATE.start_main_#t~nondet6#1| 0) (and (forall ((aux_div_~ARR_SIZE~0_93 Int) (aux_mod_~ARR_SIZE~0_93 Int)) (let ((.cse0 (+ (* 4294967296 aux_div_~ARR_SIZE~0_93) aux_mod_~ARR_SIZE~0_93)) (.cse1 (* 4294967295 |ULTIMATE.start_main_#t~nondet6#1|))) (or (<= .cse0 (+ (* 4294967296 |ULTIMATE.start_main_#t~nondet6#1|) 4294967295)) (<= aux_mod_~ARR_SIZE~0_93 2147483647) (<= 4294967296 aux_mod_~ARR_SIZE~0_93) (< (+ .cse1 |c_ULTIMATE.start_main_~count~0#1| 4294967299) .cse0) (= (let ((.cse4 (let ((.cse5 (let ((.cse7 (* |c_ULTIMATE.start_main_~count~0#1| 4))) (let ((.cse6 (let ((.cse8 (let ((.cse9 (let ((.cse10 (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset| 4) 0)))) (store .cse11 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse11 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| 4) 0))))) (store .cse10 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset| 8) 0))))) (store .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| 8) 0))))) (store .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset| 12) 0))))) (store .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| 12) 0)))))) (store .cse5 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* |ULTIMATE.start_main_#t~nondet6#1| 4) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))))) (let ((.cse3 (store (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod aux_mod_~ARR_SIZE~0_93 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| (- 17179869184)) (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))) (let ((.cse2 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse3) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse2 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 16)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)))))) 0) (<= .cse0 (+ .cse1 |c_ULTIMATE.start_main_~count~0#1| 4294967298))))) (forall ((aux_div_~ARR_SIZE~0_93 Int) (aux_mod_~ARR_SIZE~0_93 Int)) (let ((.cse12 (+ (* 4294967296 aux_div_~ARR_SIZE~0_93) aux_mod_~ARR_SIZE~0_93)) (.cse23 (* 4294967295 |ULTIMATE.start_main_#t~nondet6#1|))) (or (<= .cse12 (+ (* 4294967296 |ULTIMATE.start_main_#t~nondet6#1|) 4294967295)) (< aux_mod_~ARR_SIZE~0_93 0) (= (let ((.cse15 (let ((.cse16 (let ((.cse18 (* |c_ULTIMATE.start_main_~count~0#1| 4))) (let ((.cse17 (let ((.cse19 (let ((.cse20 (let ((.cse21 (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~#array1~0#1.offset| 4) 0)))) (store .cse22 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse22 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~#array2~0#1.offset| 4) 0))))) (store .cse21 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse21 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~#array1~0#1.offset| 8) 0))))) (store .cse20 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse20 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~#array2~0#1.offset| 8) 0))))) (store .cse19 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse19 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~#array1~0#1.offset| 12) 0))))) (store .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse17 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~#array2~0#1.offset| 12) 0)))))) (store .cse16 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse16 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* |ULTIMATE.start_main_#t~nondet6#1| 4) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))))) (let ((.cse13 (store (select .cse15 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod aux_mod_~ARR_SIZE~0_93 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))) (let ((.cse14 (select (store .cse15 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse13) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse13 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse14 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse13 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse13 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 16)) (select .cse13 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse13 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)))))) 0) (< 2147483647 aux_mod_~ARR_SIZE~0_93) (< (+ .cse23 |c_ULTIMATE.start_main_~count~0#1| 4294967299) .cse12) (<= .cse12 (+ .cse23 |c_ULTIMATE.start_main_~count~0#1| 4294967298)))))) (< 32767 |ULTIMATE.start_main_#t~nondet6#1|))) is different from false [2021-12-17 00:52:18,837 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_#t~nondet6#1| Int)) (or (< |ULTIMATE.start_main_#t~nondet6#1| 0) (and (forall ((aux_div_~ARR_SIZE~0_93 Int) (aux_mod_~ARR_SIZE~0_93 Int)) (let ((.cse0 (+ (* 4294967296 aux_div_~ARR_SIZE~0_93) aux_mod_~ARR_SIZE~0_93)) (.cse1 (* 4294967295 |ULTIMATE.start_main_#t~nondet6#1|))) (or (<= .cse0 (+ (* 4294967296 |ULTIMATE.start_main_#t~nondet6#1|) 4294967295)) (< aux_mod_~ARR_SIZE~0_93 0) (< 2147483647 aux_mod_~ARR_SIZE~0_93) (< (+ .cse1 |c_ULTIMATE.start_main_~count~0#1| 4294967300) .cse0) (= (let ((.cse4 (let ((.cse5 (let ((.cse7 (* |c_ULTIMATE.start_main_~count~0#1| 4))) (let ((.cse6 (let ((.cse8 (let ((.cse9 (let ((.cse10 (let ((.cse11 (let ((.cse12 (let ((.cse13 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset| 4) 0)))) (store .cse13 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse13 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| 4) 0))))) (store .cse12 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse12 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset| 8) 0))))) (store .cse11 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse11 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| 8) 0))))) (store .cse10 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse10 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset| 12) 0))))) (store .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| 12) 0))))) (store .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse8 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array1~0#1.offset| 16) 0))))) (store .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset| 16) 0)))))) (store .cse5 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* |ULTIMATE.start_main_#t~nondet6#1| 4) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))))) (let ((.cse3 (store (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod aux_mod_~ARR_SIZE~0_93 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))) (let ((.cse2 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse3) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse2 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 16)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|)))) 0) (<= .cse0 (+ .cse1 |c_ULTIMATE.start_main_~count~0#1| 4294967299))))) (forall ((aux_div_~ARR_SIZE~0_93 Int) (aux_mod_~ARR_SIZE~0_93 Int)) (let ((.cse26 (+ (* 4294967296 aux_div_~ARR_SIZE~0_93) aux_mod_~ARR_SIZE~0_93)) (.cse27 (* 4294967295 |ULTIMATE.start_main_#t~nondet6#1|))) (or (= (let ((.cse16 (let ((.cse17 (let ((.cse19 (* |c_ULTIMATE.start_main_~count~0#1| 4))) (let ((.cse18 (let ((.cse20 (let ((.cse21 (let ((.cse22 (let ((.cse23 (let ((.cse24 (let ((.cse25 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse19 |c_ULTIMATE.start_main_~#array1~0#1.offset| 4) 0)))) (store .cse25 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse25 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse19 |c_ULTIMATE.start_main_~#array2~0#1.offset| 4) 0))))) (store .cse24 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse24 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse19 |c_ULTIMATE.start_main_~#array1~0#1.offset| 8) 0))))) (store .cse23 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse23 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse19 |c_ULTIMATE.start_main_~#array2~0#1.offset| 8) 0))))) (store .cse22 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse22 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse19 |c_ULTIMATE.start_main_~#array1~0#1.offset| 12) 0))))) (store .cse21 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse21 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse19 |c_ULTIMATE.start_main_~#array2~0#1.offset| 12) 0))))) (store .cse20 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse20 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ .cse19 |c_ULTIMATE.start_main_~#array1~0#1.offset| 16) 0))))) (store .cse18 |c_ULTIMATE.start_main_~#array2~0#1.base| (store (select .cse18 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse19 |c_ULTIMATE.start_main_~#array2~0#1.offset| 16) 0)))))) (store .cse17 |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select .cse17 |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ (* |ULTIMATE.start_main_#t~nondet6#1| 4) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))))) (let ((.cse15 (store (select .cse16 |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (* (mod aux_mod_~ARR_SIZE~0_93 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| (- 17179869184)) (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_#t~nondet6#1|)))) (let ((.cse14 (select (store .cse16 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse15) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse15 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse15 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 16)) (select .cse15 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse15 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse14 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse14 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse15 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) |c_ULTIMATE.start_main_~sum~0#1|)))) 0) (<= .cse26 (+ (* 4294967296 |ULTIMATE.start_main_#t~nondet6#1|) 4294967295)) (<= aux_mod_~ARR_SIZE~0_93 2147483647) (<= 4294967296 aux_mod_~ARR_SIZE~0_93) (< (+ .cse27 |c_ULTIMATE.start_main_~count~0#1| 4294967300) .cse26) (<= .cse26 (+ .cse27 |c_ULTIMATE.start_main_~count~0#1| 4294967299)))))) (< 32767 |ULTIMATE.start_main_#t~nondet6#1|))) is different from false [2021-12-17 00:53:12,025 WARN L227 SmtUtils]: Spent 52.63s on a formula simplification. DAG size of input: 29 DAG size of output: 26 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-17 00:53:12,025 INFO L354 Elim1Store]: treesize reduction 17, result has 66.0 percent of original size [2021-12-17 00:53:12,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1106203 treesize of output 706876 Killed by 15