./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-patterns/array2_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/array2_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 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 21:42:13,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 21:42:13,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 21:42:13,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 21:42:13,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 21:42:13,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 21:42:13,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 21:42:13,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 21:42:13,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 21:42:13,277 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 21:42:13,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 21:42:13,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 21:42:13,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 21:42:13,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 21:42:13,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 21:42:13,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 21:42:13,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 21:42:13,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 21:42:13,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 21:42:13,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 21:42:13,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 21:42:13,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 21:42:13,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 21:42:13,298 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 21:42:13,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 21:42:13,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 21:42:13,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 21:42:13,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 21:42:13,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 21:42:13,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 21:42:13,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 21:42:13,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 21:42:13,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 21:42:13,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 21:42:13,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 21:42:13,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 21:42:13,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 21:42:13,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 21:42:13,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 21:42:13,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 21:42:13,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 21:42:13,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 21:42:13,336 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 21:42:13,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 21:42:13,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 21:42:13,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 21:42:13,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 21:42:13,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 21:42:13,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 21:42:13,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 21:42:13,342 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 21:42:13,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 21:42:13,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 21:42:13,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 21:42:13,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 21:42:13,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 21:42:13,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 21:42:13,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 21:42:13,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 21:42:13,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 21:42:13,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 21:42:13,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 21:42:13,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 21:42:13,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 21:42:13,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 21:42:13,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 21:42:13,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:42:13,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 21:42:13,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 21:42:13,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 21:42:13,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 21:42:13,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 21:42:13,347 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 21:42:13,347 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 21:42:13,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 21:42:13,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 [2021-12-27 21:42:13,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 21:42:13,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 21:42:13,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 21:42:13,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 21:42:13,659 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 21:42:13,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array2_pattern.c [2021-12-27 21:42:13,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a1d14a8/098a39f8e16249268d9b92db21a0e0f5/FLAG529559728 [2021-12-27 21:42:14,114 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 21:42:14,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array2_pattern.c [2021-12-27 21:42:14,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a1d14a8/098a39f8e16249268d9b92db21a0e0f5/FLAG529559728 [2021-12-27 21:42:14,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27a1d14a8/098a39f8e16249268d9b92db21a0e0f5 [2021-12-27 21:42:14,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 21:42:14,138 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 21:42:14,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 21:42:14,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 21:42:14,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 21:42:14,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac75f03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14, skipping insertion in model container [2021-12-27 21:42:14,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 21:42:14,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 21:42:14,292 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/array2_pattern.c[1322,1335] [2021-12-27 21:42:14,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:42:14,323 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 21:42:14,367 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/array2_pattern.c[1322,1335] [2021-12-27 21:42:14,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 21:42:14,401 INFO L208 MainTranslator]: Completed translation [2021-12-27 21:42:14,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14 WrapperNode [2021-12-27 21:42:14,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 21:42:14,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 21:42:14,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 21:42:14,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 21:42:14,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,419 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,439 INFO L137 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2021-12-27 21:42:14,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 21:42:14,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 21:42:14,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 21:42:14,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 21:42:14,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 21:42:14,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 21:42:14,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 21:42:14,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 21:42:14,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (1/1) ... [2021-12-27 21:42:14,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 21:42:14,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:14,510 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) [2021-12-27 21:42:14,514 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 [2021-12-27 21:42:14,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 21:42:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-27 21:42:14,553 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-27 21:42:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 21:42:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 21:42:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 21:42:14,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 21:42:14,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 21:42:14,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 21:42:14,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 21:42:14,609 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 21:42:14,610 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 21:42:14,771 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 21:42:14,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 21:42:14,784 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-27 21:42:14,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:42:14 BoogieIcfgContainer [2021-12-27 21:42:14,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 21:42:14,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 21:42:14,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 21:42:14,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 21:42:14,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 09:42:14" (1/3) ... [2021-12-27 21:42:14,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6687bf34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:42:14, skipping insertion in model container [2021-12-27 21:42:14,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 09:42:14" (2/3) ... [2021-12-27 21:42:14,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6687bf34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 09:42:14, skipping insertion in model container [2021-12-27 21:42:14,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 09:42:14" (3/3) ... [2021-12-27 21:42:14,797 INFO L111 eAbstractionObserver]: Analyzing ICFG array2_pattern.c [2021-12-27 21:42:14,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 21:42:14,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 21:42:14,849 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 21:42:14,853 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 [2021-12-27 21:42:14,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 21:42:14,864 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) [2021-12-27 21:42:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-27 21:42:14,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:14,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:42:14,887 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:14,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:14,894 INFO L85 PathProgramCache]: Analyzing trace with hash -800294020, now seen corresponding path program 1 times [2021-12-27 21:42:14,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:14,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304611646] [2021-12-27 21:42:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:14,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:42:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 21:42:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:42:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:42:15,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:42:15,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304611646] [2021-12-27 21:42:15,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304611646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:42:15,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:42:15,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 21:42:15,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312126732] [2021-12-27 21:42:15,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:42:15,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 21:42:15,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:42:15,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 21:42:15,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 21:42:15,071 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) [2021-12-27 21:42:15,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:42:15,084 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2021-12-27 21:42:15,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 21:42:15,085 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 [2021-12-27 21:42:15,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:42:15,092 INFO L225 Difference]: With dead ends: 47 [2021-12-27 21:42:15,093 INFO L226 Difference]: Without dead ends: 21 [2021-12-27 21:42:15,096 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 [2021-12-27 21:42:15,100 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 [2021-12-27 21:42:15,105 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] [2021-12-27 21:42:15,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-12-27 21:42:15,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-12-27 21:42:15,127 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) [2021-12-27 21:42:15,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-27 21:42:15,129 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2021-12-27 21:42:15,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:42:15,129 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-27 21:42:15,129 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) [2021-12-27 21:42:15,129 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-27 21:42:15,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-27 21:42:15,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:15,132 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:42:15,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 21:42:15,133 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:15,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash -952637313, now seen corresponding path program 1 times [2021-12-27 21:42:15,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:15,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981855928] [2021-12-27 21:42:15,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:15,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:15,172 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:42:15,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2037382117] [2021-12-27 21:42:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:15,173 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:42:15,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:15,174 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) [2021-12-27 21:42:15,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-27 21:42:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:42:15,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-27 21:42:15,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:42:15,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:42:15,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 21:42:15,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:42:15,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981855928] [2021-12-27 21:42:15,316 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:42:15,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037382117] [2021-12-27 21:42:15,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037382117] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:42:15,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:42:15,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-27 21:42:15,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080634094] [2021-12-27 21:42:15,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:42:15,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-27 21:42:15,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:42:15,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-27 21:42:15,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-27 21:42:15,318 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) [2021-12-27 21:42:15,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:42:15,339 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-12-27 21:42:15,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-27 21:42:15,339 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 [2021-12-27 21:42:15,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:42:15,340 INFO L225 Difference]: With dead ends: 26 [2021-12-27 21:42:15,340 INFO L226 Difference]: Without dead ends: 22 [2021-12-27 21:42:15,341 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 [2021-12-27 21:42:15,341 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 [2021-12-27 21:42:15,342 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] [2021-12-27 21:42:15,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-27 21:42:15,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-27 21:42:15,345 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) [2021-12-27 21:42:15,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-12-27 21:42:15,345 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2021-12-27 21:42:15,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:42:15,346 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-12-27 21:42:15,346 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) [2021-12-27 21:42:15,346 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-12-27 21:42:15,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-27 21:42:15,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:15,347 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] [2021-12-27 21:42:15,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-27 21:42:15,569 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 [2021-12-27 21:42:15,570 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:15,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:15,570 INFO L85 PathProgramCache]: Analyzing trace with hash -603190335, now seen corresponding path program 1 times [2021-12-27 21:42:15,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:15,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330398208] [2021-12-27 21:42:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:15,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:15,598 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:42:15,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465158290] [2021-12-27 21:42:15,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:15,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:42:15,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:15,599 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) [2021-12-27 21:42:15,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-27 21:42:15,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:42:15,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-27 21:42:15,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:42:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:42:15,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 21:42:15,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:42:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330398208] [2021-12-27 21:42:15,716 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:42:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465158290] [2021-12-27 21:42:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465158290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 21:42:15,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 21:42:15,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-27 21:42:15,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45895932] [2021-12-27 21:42:15,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 21:42:15,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-27 21:42:15,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:42:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-27 21:42:15,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-27 21:42:15,718 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) [2021-12-27 21:42:15,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:42:15,761 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-12-27 21:42:15,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 21:42:15,761 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 [2021-12-27 21:42:15,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:42:15,762 INFO L225 Difference]: With dead ends: 41 [2021-12-27 21:42:15,762 INFO L226 Difference]: Without dead ends: 25 [2021-12-27 21:42:15,762 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 [2021-12-27 21:42:15,763 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 [2021-12-27 21:42:15,763 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] [2021-12-27 21:42:15,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-27 21:42:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2021-12-27 21:42:15,766 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) [2021-12-27 21:42:15,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-12-27 21:42:15,767 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2021-12-27 21:42:15,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:42:15,767 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-12-27 21:42:15,767 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) [2021-12-27 21:42:15,767 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-12-27 21:42:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-27 21:42:15,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:15,768 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] [2021-12-27 21:42:15,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-27 21:42:15,971 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 [2021-12-27 21:42:15,971 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:15,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1366149955, now seen corresponding path program 1 times [2021-12-27 21:42:15,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:15,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113609500] [2021-12-27 21:42:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:15,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:15,990 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:42:15,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553762699] [2021-12-27 21:42:15,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:15,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:42:15,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:15,992 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) [2021-12-27 21:42:15,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-27 21:42:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:42:16,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-27 21:42:16,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:42:16,098 INFO L387 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 [2021-12-27 21:42:16,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:16,135 INFO L387 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 [2021-12-27 21:42:16,140 INFO L387 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 [2021-12-27 21:42:16,145 INFO L387 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 [2021-12-27 21:42:16,158 INFO L387 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 [2021-12-27 21:42:16,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:16,585 INFO L387 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 175 treesize of output 166 [2021-12-27 21:42:16,592 INFO L387 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 166 treesize of output 158 [2021-12-27 21:42:16,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:16,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:16,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:16,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 142 [2021-12-27 21:42:16,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:16,615 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2021-12-27 21:42:16,648 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-27 21:42:16,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:16,669 INFO L387 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 68 treesize of output 27 [2021-12-27 21:42:16,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:16,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:16,889 INFO L387 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 18 [2021-12-27 21:42:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:42:16,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:42:17,094 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (<= (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296) 2147483647))) (and (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (= (let ((.cse0 (let ((.cse3 (+ (- 17179869184) (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_107) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse3 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_104) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse3) (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse1 .cse2 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse1 .cse2))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0)) .cse4) (or (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (= (let ((.cse7 (let ((.cse8 (+ (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_107) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_104) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8) (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)))))) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse5 .cse6 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse5 .cse6))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse7) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0)) (not .cse4)))) is different from false [2021-12-27 21:42:19,354 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~index~0#1| Int)) (or (let ((.cse0 (<= (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |ULTIMATE.start_main_~index~0#1|)) 4294967296) 2147483647))) (and (or (not .cse0) (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (= (let ((.cse1 (let ((.cse4 (+ (* (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |ULTIMATE.start_main_~index~0#1|)) 4294967296) 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_107) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse4 (+ (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_104) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse4)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse3 (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse2 .cse3 (+ (* (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) |ULTIMATE.start_main_~index~0#1|) (select .cse2 .cse3))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0))) (or .cse0 (forall ((v_ArrVal_107 (Array Int Int)) (v_ArrVal_104 (Array Int Int))) (= (let ((.cse5 (let ((.cse8 (+ (* (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |ULTIMATE.start_main_~index~0#1|)) 4294967296) 4) (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_107) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8 (+ (* |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_104) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse5 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse7 (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse6 .cse7 (+ (* (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) |ULTIMATE.start_main_~index~0#1|) (select .cse6 .cse7))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse5) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0))))) (<= c_~ARR_SIZE~0 |ULTIMATE.start_main_~index~0#1|) (< |ULTIMATE.start_main_~index~0#1| 0))) is different from false [2021-12-27 21:42:19,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:42:19,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113609500] [2021-12-27 21:42:19,366 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:42:19,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553762699] [2021-12-27 21:42:19,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553762699] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:42:19,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-27 21:42:19,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-12-27 21:42:19,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711402752] [2021-12-27 21:42:19,367 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-27 21:42:19,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-27 21:42:19,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:42:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-27 21:42:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=185, Unknown=2, NotChecked=58, Total=306 [2021-12-27 21:42:19,368 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 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) [2021-12-27 21:42:19,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:42:19,449 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2021-12-27 21:42:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-27 21:42:19,449 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 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 [2021-12-27 21:42:19,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:42:19,451 INFO L225 Difference]: With dead ends: 43 [2021-12-27 21:42:19,451 INFO L226 Difference]: Without dead ends: 39 [2021-12-27 21:42:19,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=61, Invalid=185, Unknown=2, NotChecked=58, Total=306 [2021-12-27 21:42:19,452 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:42:19,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 34 Unchecked, 0.1s Time] [2021-12-27 21:42:19,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-27 21:42:19,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2021-12-27 21:42:19,456 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) [2021-12-27 21:42:19,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2021-12-27 21:42:19,457 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 26 [2021-12-27 21:42:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:42:19,457 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2021-12-27 21:42:19,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 12 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) [2021-12-27 21:42:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2021-12-27 21:42:19,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-27 21:42:19,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:19,458 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] [2021-12-27 21:42:19,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-27 21:42:19,659 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 [2021-12-27 21:42:19,659 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:19,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:19,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1336652411, now seen corresponding path program 2 times [2021-12-27 21:42:19,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:19,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016417171] [2021-12-27 21:42:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:19,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:19,675 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:42:19,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817524284] [2021-12-27 21:42:19,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-27 21:42:19,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:42:19,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:19,676 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) [2021-12-27 21:42:19,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-27 21:42:19,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-27 21:42:19,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:42:19,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-27 21:42:19,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:42:19,867 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:42:19,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:42:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:42:19,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:42:19,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016417171] [2021-12-27 21:42:19,956 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:42:19,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817524284] [2021-12-27 21:42:19,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817524284] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:42:19,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-27 21:42:19,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-27 21:42:19,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644660849] [2021-12-27 21:42:19,957 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-27 21:42:19,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-27 21:42:19,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:42:19,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-27 21:42:19,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-27 21:42:19,958 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) [2021-12-27 21:42:20,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:42:20,119 INFO L93 Difference]: Finished difference Result 67 states and 73 transitions. [2021-12-27 21:42:20,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-27 21:42:20,120 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 [2021-12-27 21:42:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:42:20,121 INFO L225 Difference]: With dead ends: 67 [2021-12-27 21:42:20,121 INFO L226 Difference]: Without dead ends: 57 [2021-12-27 21:42:20,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-12-27 21:42:20,121 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 52 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:42:20,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 82 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:42:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-27 21:42:20,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-12-27 21:42:20,127 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) [2021-12-27 21:42:20,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-12-27 21:42:20,127 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 28 [2021-12-27 21:42:20,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:42:20,128 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-12-27 21:42:20,128 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) [2021-12-27 21:42:20,128 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-12-27 21:42:20,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-27 21:42:20,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:20,129 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] [2021-12-27 21:42:20,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-27 21:42:20,339 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 [2021-12-27 21:42:20,339 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:20,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:20,340 INFO L85 PathProgramCache]: Analyzing trace with hash -178408891, now seen corresponding path program 3 times [2021-12-27 21:42:20,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:20,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57809970] [2021-12-27 21:42:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:20,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:20,362 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:42:20,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [290726161] [2021-12-27 21:42:20,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-27 21:42:20,364 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:42:20,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:20,365 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) [2021-12-27 21:42:20,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-27 21:42:20,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-27 21:42:20,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:42:20,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-27 21:42:20,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:42:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:42:20,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:42:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:42:20,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:42:20,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57809970] [2021-12-27 21:42:20,643 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:42:20,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290726161] [2021-12-27 21:42:20,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290726161] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:42:20,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-27 21:42:20,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-12-27 21:42:20,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443387400] [2021-12-27 21:42:20,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-27 21:42:20,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-27 21:42:20,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:42:20,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-27 21:42:20,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-27 21:42:20,644 INFO L87 Difference]: Start difference. First operand 45 states and 50 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) [2021-12-27 21:42:20,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:42:20,879 INFO L93 Difference]: Finished difference Result 60 states and 63 transitions. [2021-12-27 21:42:20,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-27 21:42:20,880 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 [2021-12-27 21:42:20,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:42:20,880 INFO L225 Difference]: With dead ends: 60 [2021-12-27 21:42:20,880 INFO L226 Difference]: Without dead ends: 56 [2021-12-27 21:42:20,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2021-12-27 21:42:20,881 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 48 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-27 21:42:20,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 83 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-27 21:42:20,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-27 21:42:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-12-27 21:42:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.119047619047619) internal successors, (47), 42 states have internal predecessors, (47), 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) [2021-12-27 21:42:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-12-27 21:42:20,890 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 28 [2021-12-27 21:42:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:42:20,891 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-12-27 21:42:20,891 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) [2021-12-27 21:42:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-12-27 21:42:20,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-27 21:42:20,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:20,892 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] [2021-12-27 21:42:20,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-27 21:42:21,092 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 [2021-12-27 21:42:21,093 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:21,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:21,093 INFO L85 PathProgramCache]: Analyzing trace with hash 400980999, now seen corresponding path program 4 times [2021-12-27 21:42:21,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:21,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88665905] [2021-12-27 21:42:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:21,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:21,108 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:42:21,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [851003304] [2021-12-27 21:42:21,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-27 21:42:21,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:42:21,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:21,109 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) [2021-12-27 21:42:21,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-27 21:42:21,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-27 21:42:21,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:42:21,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-27 21:42:21,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:42:21,267 INFO L387 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 [2021-12-27 21:42:21,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:21,316 INFO L387 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 [2021-12-27 21:42:21,324 INFO L387 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 [2021-12-27 21:42:21,331 INFO L387 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 [2021-12-27 21:42:21,339 INFO L387 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 [2021-12-27 21:42:21,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:21,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:21,451 INFO L387 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 [2021-12-27 21:42:22,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,293 INFO L387 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 193 treesize of output 180 [2021-12-27 21:42:22,300 INFO L387 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 175 treesize of output 165 [2021-12-27 21:42:22,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,367 INFO L353 Elim1Store]: treesize reduction 105, result has 19.8 percent of original size [2021-12-27 21:42:22,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 141 treesize of output 182 [2021-12-27 21:42:22,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,431 INFO L353 Elim1Store]: treesize reduction 75, result has 25.7 percent of original size [2021-12-27 21:42:22,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-12-27 21:42:22,443 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-27 21:42:22,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:22,521 INFO L353 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2021-12-27 21:42:22,521 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 99 treesize of output 53 [2021-12-27 21:42:23,729 INFO L353 Elim1Store]: treesize reduction 48, result has 12.7 percent of original size [2021-12-27 21:42:23,729 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 109 treesize of output 60 [2021-12-27 21:42:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:42:23,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:42:38,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:42:38,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88665905] [2021-12-27 21:42:38,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:42:38,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851003304] [2021-12-27 21:42:38,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851003304] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:42:38,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-27 21:42:38,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-12-27 21:42:38,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247671075] [2021-12-27 21:42:38,768 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-27 21:42:38,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-27 21:42:38,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:42:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-27 21:42:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=464, Unknown=8, NotChecked=0, Total=552 [2021-12-27 21:42:38,769 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 16 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) [2021-12-27 21:42:40,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:42:40,773 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2021-12-27 21:42:40,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-27 21:42:40,774 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 16 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 [2021-12-27 21:42:40,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:42:40,777 INFO L225 Difference]: With dead ends: 79 [2021-12-27 21:42:40,777 INFO L226 Difference]: Without dead ends: 75 [2021-12-27 21:42:40,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=101, Invalid=592, Unknown=9, NotChecked=0, Total=702 [2021-12-27 21:42:40,779 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-27 21:42:40,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 170 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 117 Unchecked, 0.9s Time] [2021-12-27 21:42:40,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-27 21:42:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 64. [2021-12-27 21:42:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 53 states have (on average 1.1320754716981132) internal successors, (60), 53 states have internal predecessors, (60), 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) [2021-12-27 21:42:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2021-12-27 21:42:40,787 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 30 [2021-12-27 21:42:40,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:42:40,787 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2021-12-27 21:42:40,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 16 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) [2021-12-27 21:42:40,788 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2021-12-27 21:42:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-27 21:42:40,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:40,788 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] [2021-12-27 21:42:40,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-27 21:42:40,998 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 [2021-12-27 21:42:40,999 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:40,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:40,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1151083191, now seen corresponding path program 5 times [2021-12-27 21:42:40,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:40,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002831885] [2021-12-27 21:42:40,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:40,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:41,013 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:42:41,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214955517] [2021-12-27 21:42:41,024 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-27 21:42:41,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:42:41,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:41,025 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) [2021-12-27 21:42:41,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-27 21:42:41,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-27 21:42:41,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:42:41,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-27 21:42:41,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:42:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:42:42,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:42:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:42:42,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:42:42,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002831885] [2021-12-27 21:42:42,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:42:42,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214955517] [2021-12-27 21:42:42,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214955517] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:42:42,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-27 21:42:42,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-27 21:42:42,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070092463] [2021-12-27 21:42:42,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-27 21:42:42,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-27 21:42:42,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:42:42,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-27 21:42:42,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-27 21:42:42,641 INFO L87 Difference]: Start difference. First operand 64 states and 70 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) [2021-12-27 21:42:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:42:44,387 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2021-12-27 21:42:44,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-27 21:42:44,387 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 [2021-12-27 21:42:44,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:42:44,389 INFO L225 Difference]: With dead ends: 103 [2021-12-27 21:42:44,389 INFO L226 Difference]: Without dead ends: 91 [2021-12-27 21:42:44,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-12-27 21:42:44,390 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-27 21:42:44,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 106 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-27 21:42:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-27 21:42:44,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2021-12-27 21:42:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 59 states have (on average 1.11864406779661) internal successors, (66), 59 states have internal predecessors, (66), 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) [2021-12-27 21:42:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2021-12-27 21:42:44,404 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 32 [2021-12-27 21:42:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:42:44,405 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2021-12-27 21:42:44,405 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) [2021-12-27 21:42:44,405 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2021-12-27 21:42:44,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-27 21:42:44,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:44,406 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] [2021-12-27 21:42:44,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-27 21:42:44,607 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 [2021-12-27 21:42:44,607 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:44,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash -475590135, now seen corresponding path program 6 times [2021-12-27 21:42:44,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:44,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139751214] [2021-12-27 21:42:44,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:44,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:44,631 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:42:44,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510718062] [2021-12-27 21:42:44,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-27 21:42:44,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:42:44,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:44,638 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) [2021-12-27 21:42:44,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-27 21:42:44,737 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-27 21:42:44,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-27 21:42:44,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-27 21:42:44,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:42:45,821 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 21:42:45,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:42:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-27 21:42:46,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:42:46,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139751214] [2021-12-27 21:42:46,415 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:42:46,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510718062] [2021-12-27 21:42:46,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510718062] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-27 21:42:46,415 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-27 21:42:46,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-12-27 21:42:46,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937881120] [2021-12-27 21:42:46,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-27 21:42:46,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-27 21:42:46,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:42:46,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-27 21:42:46,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-27 21:42:46,417 INFO L87 Difference]: Start difference. First operand 72 states and 78 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) [2021-12-27 21:42:48,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:42:48,382 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2021-12-27 21:42:48,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-27 21:42:48,383 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 [2021-12-27 21:42:48,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:42:48,385 INFO L225 Difference]: With dead ends: 90 [2021-12-27 21:42:48,385 INFO L226 Difference]: Without dead ends: 86 [2021-12-27 21:42:48,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-27 21:42:48,386 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 53 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-27 21:42:48,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 164 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-27 21:42:48,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-27 21:42:48,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2021-12-27 21:42:48,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 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) [2021-12-27 21:42:48,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2021-12-27 21:42:48,396 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 32 [2021-12-27 21:42:48,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:42:48,397 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2021-12-27 21:42:48,397 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) [2021-12-27 21:42:48,397 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2021-12-27 21:42:48,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-27 21:42:48,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:42:48,398 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 21:42:48,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-27 21:42:48,615 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 [2021-12-27 21:42:48,615 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:42:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:42:48,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2113032700, now seen corresponding path program 1 times [2021-12-27 21:42:48,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:42:48,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276520713] [2021-12-27 21:42:48,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:48,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:42:48,642 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:42:48,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632664103] [2021-12-27 21:42:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:42:48,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:42:48,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:42:48,648 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) [2021-12-27 21:42:48,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-27 21:42:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:42:48,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-27 21:42:48,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:42:49,040 INFO L387 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 [2021-12-27 21:42:49,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:49,368 INFO L387 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 [2021-12-27 21:42:49,402 INFO L387 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 [2021-12-27 21:42:49,421 INFO L387 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 [2021-12-27 21:42:52,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:52,715 INFO L387 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 179 treesize of output 170 [2021-12-27 21:42:52,735 INFO L387 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 162 [2021-12-27 21:42:52,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:52,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:52,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:52,779 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 142 [2021-12-27 21:42:52,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:52,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2021-12-27 21:42:52,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:52,984 INFO L387 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 84 treesize of output 44 [2021-12-27 21:42:54,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:54,677 INFO L387 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 175 treesize of output 166 [2021-12-27 21:42:54,699 INFO L387 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 166 treesize of output 158 [2021-12-27 21:42:54,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:54,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:54,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:54,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 142 [2021-12-27 21:42:54,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:54,769 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 17 [2021-12-27 21:42:54,777 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-27 21:42:54,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:42:54,917 INFO L387 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 68 treesize of output 27 [2021-12-27 21:42:56,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:56,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-27 21:42:56,414 INFO L387 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-12-27 21:42:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-27 21:42:56,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-27 21:42:58,342 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (<= (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296) 2147483647))) (and (or (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_449 (Array Int Int))) (= (let ((.cse0 (let ((.cse3 (+ (- 17179869184) (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_447) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse3 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_449) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse3)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse1 .cse2 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse1 .cse2))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0)) .cse4) (or (not .cse4) (forall ((v_ArrVal_447 (Array Int Int)) (v_ArrVal_449 (Array Int Int))) (= (let ((.cse7 (let ((.cse8 (+ (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_447) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8 (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_449) |c_ULTIMATE.start_main_~#array2~0#1.base|) .cse8)))))) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)))) (store .cse5 .cse6 (+ (* |c_ULTIMATE.start_main_~index~0#1| (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (select .cse5 .cse6))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse7) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse7 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0))))) is different from false [2021-12-27 21:43:09,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 21:43:09,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276520713] [2021-12-27 21:43:09,493 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-27 21:43:09,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632664103] [2021-12-27 21:43:09,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632664103] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-27 21:43:09,494 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-27 21:43:09,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-12-27 21:43:09,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562868066] [2021-12-27 21:43:09,494 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-27 21:43:09,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-27 21:43:09,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 21:43:09,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-27 21:43:09,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=258, Unknown=5, NotChecked=34, Total=380 [2021-12-27 21:43:09,495 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 13 states have internal predecessors, (24), 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) [2021-12-27 21:43:12,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 21:43:12,272 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2021-12-27 21:43:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-27 21:43:12,273 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 13 states have internal predecessors, (24), 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 [2021-12-27 21:43:12,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 21:43:12,273 INFO L225 Difference]: With dead ends: 81 [2021-12-27 21:43:12,273 INFO L226 Difference]: Without dead ends: 57 [2021-12-27 21:43:12,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=143, Invalid=408, Unknown=5, NotChecked=44, Total=600 [2021-12-27 21:43:12,274 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-27 21:43:12,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 139 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 51 Unchecked, 0.6s Time] [2021-12-27 21:43:12,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-27 21:43:12,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-27 21:43:12,286 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) [2021-12-27 21:43:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-12-27 21:43:12,286 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 34 [2021-12-27 21:43:12,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 21:43:12,286 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-12-27 21:43:12,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 13 states have internal predecessors, (24), 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) [2021-12-27 21:43:12,287 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-12-27 21:43:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-27 21:43:12,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 21:43:12,287 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] [2021-12-27 21:43:12,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-27 21:43:12,493 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 [2021-12-27 21:43:12,493 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 21:43:12,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 21:43:12,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1722352949, now seen corresponding path program 7 times [2021-12-27 21:43:12,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 21:43:12,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129779394] [2021-12-27 21:43:12,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 21:43:12,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 21:43:12,505 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-27 21:43:12,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843236719] [2021-12-27 21:43:12,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-27 21:43:12,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-27 21:43:12,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 21:43:12,506 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) [2021-12-27 21:43:12,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-27 21:43:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 21:43:12,669 WARN L261 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 85 conjunts are in the unsatisfiable core [2021-12-27 21:43:12,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 21:43:12,907 INFO L387 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 [2021-12-27 21:43:13,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:13,188 INFO L387 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 [2021-12-27 21:43:13,227 INFO L387 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 [2021-12-27 21:43:13,252 INFO L387 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 [2021-12-27 21:43:14,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:14,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:14,085 INFO L387 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 [2021-12-27 21:43:15,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:15,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:15,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:15,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:15,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:15,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:15,412 INFO L387 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 88 treesize of output 83 [2021-12-27 21:43:20,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:20,840 INFO L387 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 211 treesize of output 194 [2021-12-27 21:43:20,865 INFO L387 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 184 treesize of output 172 [2021-12-27 21:43:20,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:20,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:20,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:20,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:20,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:20,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:20,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:21,013 INFO L244 Elim1Store]: Index analysis took 125 ms [2021-12-27 21:43:21,411 INFO L353 Elim1Store]: treesize reduction 155, result has 22.9 percent of original size [2021-12-27 21:43:21,412 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 148 treesize of output 212 [2021-12-27 21:43:21,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:21,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:21,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:21,976 INFO L353 Elim1Store]: treesize reduction 115, result has 26.3 percent of original size [2021-12-27 21:43:21,977 INFO L387 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 6 case distinctions, treesize of input 40 treesize of output 63 [2021-12-27 21:43:22,128 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-27 21:43:22,283 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-27 21:43:22,779 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-27 21:43:23,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:23,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:23,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:23,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:23,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:23,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:23,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-27 21:43:23,528 INFO L244 Elim1Store]: Index analysis took 126 ms [2021-12-27 21:43:23,686 INFO L353 Elim1Store]: treesize reduction 55, result has 11.3 percent of original size [2021-12-27 21:43:23,686 INFO L387 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 318 treesize of output 187