./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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/nla-digbench-scaling/ps6-ll_valuebound10.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 1c9e40c4fcbf0a2270c810eae17f30e2b9a539f72a78b9b7061997095813940b --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 14:22:27,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 14:22:28,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 14:22:28,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 14:22:28,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 14:22:28,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 14:22:28,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 14:22:28,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 14:22:28,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 14:22:28,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 14:22:28,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 14:22:28,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 14:22:28,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 14:22:28,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 14:22:28,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 14:22:28,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 14:22:28,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 14:22:28,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 14:22:28,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 14:22:28,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 14:22:28,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 14:22:28,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 14:22:28,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 14:22:28,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 14:22:28,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 14:22:28,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 14:22:28,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 14:22:28,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 14:22:28,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 14:22:28,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 14:22:28,071 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 14:22:28,072 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 14:22:28,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 14:22:28,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 14:22:28,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 14:22:28,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 14:22:28,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 14:22:28,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 14:22:28,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 14:22:28,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 14:22:28,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 14:22:28,078 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 14:22:28,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 14:22:28,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 14:22:28,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 14:22:28,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 14:22:28,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 14:22:28,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 14:22:28,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 14:22:28,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 14:22:28,117 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 14:22:28,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 14:22:28,118 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 14:22:28,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 14:22:28,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 14:22:28,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 14:22:28,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 14:22:28,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 14:22:28,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 14:22:28,119 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 14:22:28,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 14:22:28,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 14:22:28,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 14:22:28,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 14:22:28,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 14:22:28,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 14:22:28,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:22:28,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 14:22:28,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 14:22:28,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 14:22:28,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 14:22:28,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 14:22:28,124 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 14:22:28,124 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 14:22:28,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 14:22:28,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 14:22:28,124 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c9e40c4fcbf0a2270c810eae17f30e2b9a539f72a78b9b7061997095813940b [2021-12-14 14:22:28,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 14:22:28,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 14:22:28,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 14:22:28,316 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 14:22:28,316 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 14:22:28,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2021-12-14 14:22:28,365 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164c6cc6e/d6884648011e4e18b49bee5f9d8dc16d/FLAGf1c01a1b1 [2021-12-14 14:22:28,737 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 14:22:28,737 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound10.c [2021-12-14 14:22:28,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164c6cc6e/d6884648011e4e18b49bee5f9d8dc16d/FLAGf1c01a1b1 [2021-12-14 14:22:29,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164c6cc6e/d6884648011e4e18b49bee5f9d8dc16d [2021-12-14 14:22:29,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 14:22:29,190 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 14:22:29,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 14:22:29,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 14:22:29,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 14:22:29,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141defb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29, skipping insertion in model container [2021-12-14 14:22:29,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 14:22:29,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 14:22:29,296 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/nla-digbench-scaling/ps6-ll_valuebound10.c[458,471] [2021-12-14 14:22:29,306 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:22:29,310 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 14:22:29,318 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/nla-digbench-scaling/ps6-ll_valuebound10.c[458,471] [2021-12-14 14:22:29,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 14:22:29,335 INFO L208 MainTranslator]: Completed translation [2021-12-14 14:22:29,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29 WrapperNode [2021-12-14 14:22:29,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 14:22:29,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 14:22:29,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 14:22:29,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 14:22:29,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,346 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,356 INFO L137 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2021-12-14 14:22:29,357 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 14:22:29,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 14:22:29,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 14:22:29,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 14:22:29,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,365 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 14:22:29,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 14:22:29,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 14:22:29,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 14:22:29,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (1/1) ... [2021-12-14 14:22:29,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 14:22:29,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:29,408 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) [2021-12-14 14:22:29,409 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 [2021-12-14 14:22:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 14:22:29,429 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 14:22:29,430 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 14:22:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 14:22:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 14:22:29,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 14:22:29,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-14 14:22:29,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-14 14:22:29,465 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 14:22:29,466 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 14:22:29,540 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 14:22:29,544 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 14:22:29,551 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 14:22:29,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:22:29 BoogieIcfgContainer [2021-12-14 14:22:29,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 14:22:29,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 14:22:29,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 14:22:29,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 14:22:29,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:22:29" (1/3) ... [2021-12-14 14:22:29,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542ffcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:22:29, skipping insertion in model container [2021-12-14 14:22:29,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:22:29" (2/3) ... [2021-12-14 14:22:29,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542ffcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:22:29, skipping insertion in model container [2021-12-14 14:22:29,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:22:29" (3/3) ... [2021-12-14 14:22:29,562 INFO L111 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound10.c [2021-12-14 14:22:29,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 14:22:29,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 14:22:29,609 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 14:22:29,617 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 [2021-12-14 14:22:29,618 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 14:22:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-14 14:22:29,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 14:22:29,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:29,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:29,647 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:29,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:29,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1845349065, now seen corresponding path program 1 times [2021-12-14 14:22:29,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:29,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346392491] [2021-12-14 14:22:29,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:29,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:22:29,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 14:22:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:22:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-14 14:22:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:22:29,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 14:22:29,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:29,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346392491] [2021-12-14 14:22:29,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346392491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:22:29,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:22:29,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 14:22:29,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562365373] [2021-12-14 14:22:29,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:22:29,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 14:22:29,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:29,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 14:22:29,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 14:22:29,843 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 14:22:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:29,867 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2021-12-14 14:22:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 14:22:29,876 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-12-14 14:22:29,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:29,880 INFO L225 Difference]: With dead ends: 45 [2021-12-14 14:22:29,880 INFO L226 Difference]: Without dead ends: 20 [2021-12-14 14:22:29,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 14:22:29,885 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:29,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:22:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-14 14:22:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-12-14 14:22:29,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-14 14:22:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-14 14:22:29,910 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2021-12-14 14:22:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:29,910 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-14 14:22:29,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 14:22:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-12-14 14:22:29,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 14:22:29,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:29,912 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:29,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 14:22:29,912 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1506842435, now seen corresponding path program 1 times [2021-12-14 14:22:29,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:29,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732943985] [2021-12-14 14:22:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:29,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:29,925 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:29,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911770719] [2021-12-14 14:22:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:29,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:29,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:29,939 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) [2021-12-14 14:22:29,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 14:22:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:22:29,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 14:22:29,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 14:22:30,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 14:22:30,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:30,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732943985] [2021-12-14 14:22:30,126 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:30,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911770719] [2021-12-14 14:22:30,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911770719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 14:22:30,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 14:22:30,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 14:22:30,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316681877] [2021-12-14 14:22:30,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:22:30,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:22:30,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:30,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:22:30,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 14:22:30,128 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 14:22:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:30,340 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-12-14 14:22:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:22:30,341 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-12-14 14:22:30,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:30,342 INFO L225 Difference]: With dead ends: 31 [2021-12-14 14:22:30,342 INFO L226 Difference]: Without dead ends: 27 [2021-12-14 14:22:30,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 14:22:30,343 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:30,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 75 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 14:22:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-14 14:22:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-14 14:22:30,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-14 14:22:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-14 14:22:30,349 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2021-12-14 14:22:30,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:30,350 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-14 14:22:30,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-14 14:22:30,350 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-14 14:22:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-14 14:22:30,351 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:30,351 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:30,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 14:22:30,567 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 [2021-12-14 14:22:30,567 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:30,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash 903983968, now seen corresponding path program 1 times [2021-12-14 14:22:30,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:30,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735969142] [2021-12-14 14:22:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:30,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:30,578 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:30,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229254947] [2021-12-14 14:22:30,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:30,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:30,584 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) [2021-12-14 14:22:30,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 14:22:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:22:30,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 14:22:30,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:30,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 14:22:30,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:30,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-14 14:22:30,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:30,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735969142] [2021-12-14 14:22:30,901 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:30,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229254947] [2021-12-14 14:22:30,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229254947] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:30,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:30,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2021-12-14 14:22:30,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526892342] [2021-12-14 14:22:30,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 14:22:30,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 14:22:30,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:30,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 14:22:30,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 14:22:30,903 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 14:22:30,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:30,932 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2021-12-14 14:22:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 14:22:30,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2021-12-14 14:22:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:30,933 INFO L225 Difference]: With dead ends: 33 [2021-12-14 14:22:30,934 INFO L226 Difference]: Without dead ends: 29 [2021-12-14 14:22:30,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 14:22:30,935 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:30,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 65 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:22:30,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-14 14:22:30,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-14 14:22:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-14 14:22:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-12-14 14:22:30,945 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2021-12-14 14:22:30,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:30,945 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-12-14 14:22:30,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 14:22:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-12-14 14:22:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-14 14:22:30,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:30,952 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:30,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-14 14:22:31,153 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 [2021-12-14 14:22:31,153 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:31,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1648043046, now seen corresponding path program 1 times [2021-12-14 14:22:31,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:31,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305819158] [2021-12-14 14:22:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:31,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:31,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:31,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295107304] [2021-12-14 14:22:31,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:31,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:31,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:31,165 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) [2021-12-14 14:22:31,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 14:22:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:22:31,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 14:22:31,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-14 14:22:31,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:31,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:31,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305819158] [2021-12-14 14:22:31,509 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:31,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295107304] [2021-12-14 14:22:31,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295107304] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:31,510 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:31,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-12-14 14:22:31,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289432715] [2021-12-14 14:22:31,511 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:31,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 14:22:31,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:31,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 14:22:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-14 14:22:31,513 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-14 14:22:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:31,584 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2021-12-14 14:22:31,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 14:22:31,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2021-12-14 14:22:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:31,586 INFO L225 Difference]: With dead ends: 38 [2021-12-14 14:22:31,586 INFO L226 Difference]: Without dead ends: 32 [2021-12-14 14:22:31,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:22:31,587 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 2 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:31,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 131 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:22:31,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-14 14:22:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-14 14:22:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 7 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-14 14:22:31,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-12-14 14:22:31,596 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 36 [2021-12-14 14:22:31,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:31,597 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-12-14 14:22:31,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-14 14:22:31,597 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-12-14 14:22:31,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-14 14:22:31,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:31,598 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:31,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-14 14:22:31,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:31,812 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:31,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:31,812 INFO L85 PathProgramCache]: Analyzing trace with hash -426505545, now seen corresponding path program 2 times [2021-12-14 14:22:31,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:31,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748986822] [2021-12-14 14:22:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:31,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:31,824 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:31,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2092359188] [2021-12-14 14:22:31,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 14:22:31,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:31,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:31,825 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) [2021-12-14 14:22:31,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 14:22:31,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 14:22:31,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:22:31,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-14 14:22:31,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-14 14:22:32,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:32,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:32,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748986822] [2021-12-14 14:22:32,198 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:32,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092359188] [2021-12-14 14:22:32,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092359188] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:32,198 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:32,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-12-14 14:22:32,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664279781] [2021-12-14 14:22:32,199 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:32,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 14:22:32,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 14:22:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-14 14:22:32,200 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-14 14:22:32,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:32,262 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2021-12-14 14:22:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 14:22:32,262 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2021-12-14 14:22:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:32,263 INFO L225 Difference]: With dead ends: 41 [2021-12-14 14:22:32,263 INFO L226 Difference]: Without dead ends: 35 [2021-12-14 14:22:32,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:22:32,264 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 2 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:32,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 167 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:22:32,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-12-14 14:22:32,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-12-14 14:22:32,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-14 14:22:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-12-14 14:22:32,270 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 43 [2021-12-14 14:22:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:32,270 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-12-14 14:22:32,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-12-14 14:22:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-12-14 14:22:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 14:22:32,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:32,271 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:32,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 14:22:32,472 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 [2021-12-14 14:22:32,472 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:32,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash 173594938, now seen corresponding path program 3 times [2021-12-14 14:22:32,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:32,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504024134] [2021-12-14 14:22:32,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:32,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:32,479 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:32,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903669858] [2021-12-14 14:22:32,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 14:22:32,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:32,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:32,481 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) [2021-12-14 14:22:32,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 14:22:32,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-14 14:22:32,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:22:32,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-14 14:22:32,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:32,847 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-14 14:22:32,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:32,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:32,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504024134] [2021-12-14 14:22:32,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:32,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903669858] [2021-12-14 14:22:32,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903669858] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:32,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:32,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-14 14:22:32,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023303401] [2021-12-14 14:22:32,983 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:32,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 14:22:32,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:32,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 14:22:32,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-14 14:22:32,984 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-14 14:22:33,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:33,053 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2021-12-14 14:22:33,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 14:22:33,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 50 [2021-12-14 14:22:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:33,055 INFO L225 Difference]: With dead ends: 44 [2021-12-14 14:22:33,055 INFO L226 Difference]: Without dead ends: 38 [2021-12-14 14:22:33,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:22:33,056 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:33,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 207 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 14:22:33,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-14 14:22:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-12-14 14:22:33,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-14 14:22:33,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-12-14 14:22:33,061 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 50 [2021-12-14 14:22:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:33,061 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-12-14 14:22:33,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 6 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-12-14 14:22:33,061 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-12-14 14:22:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-14 14:22:33,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:33,062 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:33,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-14 14:22:33,263 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 [2021-12-14 14:22:33,263 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:33,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:33,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1013596503, now seen corresponding path program 4 times [2021-12-14 14:22:33,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:33,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354546579] [2021-12-14 14:22:33,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:33,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:33,270 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:33,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649198779] [2021-12-14 14:22:33,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 14:22:33,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:33,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:33,272 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) [2021-12-14 14:22:33,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 14:22:33,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 14:22:33,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:22:33,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-14 14:22:33,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-14 14:22:33,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:33,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:33,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354546579] [2021-12-14 14:22:33,622 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:33,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649198779] [2021-12-14 14:22:33,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649198779] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:33,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:33,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-12-14 14:22:33,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624343378] [2021-12-14 14:22:33,623 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:33,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-14 14:22:33,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:33,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-14 14:22:33,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-14 14:22:33,625 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-14 14:22:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:33,722 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2021-12-14 14:22:33,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 14:22:33,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 57 [2021-12-14 14:22:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:33,723 INFO L225 Difference]: With dead ends: 47 [2021-12-14 14:22:33,723 INFO L226 Difference]: Without dead ends: 41 [2021-12-14 14:22:33,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:22:33,724 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:33,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 251 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:22:33,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-14 14:22:33,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-12-14 14:22:33,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-14 14:22:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-12-14 14:22:33,730 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 57 [2021-12-14 14:22:33,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:33,730 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-12-14 14:22:33,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 7 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-14 14:22:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-12-14 14:22:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-14 14:22:33,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:33,731 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:33,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-14 14:22:33,947 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 [2021-12-14 14:22:33,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:33,948 INFO L85 PathProgramCache]: Analyzing trace with hash 66449050, now seen corresponding path program 5 times [2021-12-14 14:22:33,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:33,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125212055] [2021-12-14 14:22:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:33,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:33,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:33,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099274260] [2021-12-14 14:22:33,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-14 14:22:33,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:33,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:33,957 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) [2021-12-14 14:22:33,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 14:22:34,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-14 14:22:34,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:22:34,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-14 14:22:34,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-14 14:22:34,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:34,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:34,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125212055] [2021-12-14 14:22:34,576 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:34,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099274260] [2021-12-14 14:22:34,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099274260] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:34,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:34,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-12-14 14:22:34,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088055404] [2021-12-14 14:22:34,577 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:34,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 14:22:34,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:34,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 14:22:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-14 14:22:34,578 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-14 14:22:34,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:34,678 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-12-14 14:22:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-14 14:22:34,678 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 64 [2021-12-14 14:22:34,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:34,679 INFO L225 Difference]: With dead ends: 50 [2021-12-14 14:22:34,679 INFO L226 Difference]: Without dead ends: 44 [2021-12-14 14:22:34,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-14 14:22:34,679 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:34,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 299 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:22:34,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-14 14:22:34,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-12-14 14:22:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.0344827586206897) internal successors, (30), 29 states have internal predecessors, (30), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-14 14:22:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2021-12-14 14:22:34,687 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 64 [2021-12-14 14:22:34,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:34,687 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2021-12-14 14:22:34,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 8 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2021-12-14 14:22:34,688 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2021-12-14 14:22:34,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 14:22:34,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:34,689 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:34,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 14:22:34,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:34,896 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:34,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash 357326839, now seen corresponding path program 6 times [2021-12-14 14:22:34,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:34,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467680399] [2021-12-14 14:22:34,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:34,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:34,902 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:34,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922894061] [2021-12-14 14:22:34,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-14 14:22:34,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:34,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:34,908 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) [2021-12-14 14:22:34,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 14:22:35,376 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-14 14:22:35,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:22:35,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-14 14:22:35,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-12-14 14:22:35,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:35,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:35,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467680399] [2021-12-14 14:22:35,700 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:35,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922894061] [2021-12-14 14:22:35,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922894061] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:35,700 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:35,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-12-14 14:22:35,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601531911] [2021-12-14 14:22:35,700 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:35,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 14:22:35,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:35,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 14:22:35,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-12-14 14:22:35,701 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-12-14 14:22:35,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:35,826 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2021-12-14 14:22:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 14:22:35,826 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 71 [2021-12-14 14:22:35,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:35,827 INFO L225 Difference]: With dead ends: 53 [2021-12-14 14:22:35,827 INFO L226 Difference]: Without dead ends: 47 [2021-12-14 14:22:35,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:22:35,828 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:35,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 351 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:22:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-12-14 14:22:35,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-12-14 14:22:35,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-14 14:22:35,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2021-12-14 14:22:35,833 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 71 [2021-12-14 14:22:35,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:35,833 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2021-12-14 14:22:35,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2021-12-14 14:22:35,833 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2021-12-14 14:22:35,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-14 14:22:35,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:35,834 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:35,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 14:22:36,034 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 [2021-12-14 14:22:36,035 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:36,035 INFO L85 PathProgramCache]: Analyzing trace with hash 416422906, now seen corresponding path program 7 times [2021-12-14 14:22:36,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:36,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701056474] [2021-12-14 14:22:36,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:36,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:36,041 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:36,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733599057] [2021-12-14 14:22:36,041 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-14 14:22:36,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:36,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:36,047 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) [2021-12-14 14:22:36,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 14:22:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 14:22:36,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-14 14:22:36,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:36,940 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 41 proven. 85 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-14 14:22:36,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:41,594 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* (- 18) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* (- 119) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* (- 65) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (not (= (mod (+ .cse0 .cse1 .cse2 (* (- 120) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse3) (- 12)) 0)) (< (div (+ .cse0 .cse1 .cse2 (- 12) .cse3) (- 12)) (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 10 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (* 5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 1)) (<= |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~c~0#1|) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|))))) is different from false [2021-12-14 14:22:44,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:44,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701056474] [2021-12-14 14:22:44,658 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:44,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733599057] [2021-12-14 14:22:44,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733599057] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:44,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:44,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-14 14:22:44,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573038212] [2021-12-14 14:22:44,658 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:44,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 14:22:44,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 14:22:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=326, Unknown=1, NotChecked=36, Total=420 [2021-12-14 14:22:44,659 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 11 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2021-12-14 14:22:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:44,922 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2021-12-14 14:22:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 14:22:44,922 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 11 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) Word has length 78 [2021-12-14 14:22:44,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:44,923 INFO L225 Difference]: With dead ends: 56 [2021-12-14 14:22:44,923 INFO L226 Difference]: Without dead ends: 50 [2021-12-14 14:22:44,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 75 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=78, Invalid=431, Unknown=1, NotChecked=42, Total=552 [2021-12-14 14:22:44,924 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:44,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 381 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 14:22:44,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-14 14:22:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-14 14:22:44,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 33 states have internal predecessors, (34), 13 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-14 14:22:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2021-12-14 14:22:44,928 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 78 [2021-12-14 14:22:44,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:44,929 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2021-12-14 14:22:44,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 11 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2021-12-14 14:22:44,929 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2021-12-14 14:22:44,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-14 14:22:44,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:44,932 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:44,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-14 14:22:45,136 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 [2021-12-14 14:22:45,137 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:45,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1706793321, now seen corresponding path program 8 times [2021-12-14 14:22:45,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:45,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773631767] [2021-12-14 14:22:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:45,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:45,143 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:45,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914386069] [2021-12-14 14:22:45,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 14:22:45,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:45,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:45,144 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) [2021-12-14 14:22:45,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-14 14:22:45,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 14:22:45,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:22:45,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-14 14:22:45,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 20 proven. 108 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-12-14 14:22:46,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:46,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:46,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773631767] [2021-12-14 14:22:46,421 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:46,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914386069] [2021-12-14 14:22:46,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914386069] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:46,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:46,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-12-14 14:22:46,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266054723] [2021-12-14 14:22:46,422 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:46,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-14 14:22:46,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:46,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-14 14:22:46,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-12-14 14:22:46,423 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 11 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2021-12-14 14:22:46,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:46,584 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2021-12-14 14:22:46,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 14:22:46,584 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 11 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 85 [2021-12-14 14:22:46,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:46,585 INFO L225 Difference]: With dead ends: 59 [2021-12-14 14:22:46,585 INFO L226 Difference]: Without dead ends: 53 [2021-12-14 14:22:46,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-12-14 14:22:46,586 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:46,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 467 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:22:46,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-14 14:22:46,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-12-14 14:22:46,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-14 14:22:46,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2021-12-14 14:22:46,591 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 85 [2021-12-14 14:22:46,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:46,592 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2021-12-14 14:22:46,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 11 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2021-12-14 14:22:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2021-12-14 14:22:46,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-14 14:22:46,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:46,593 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:46,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-14 14:22:46,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-14 14:22:46,798 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:46,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1063034534, now seen corresponding path program 9 times [2021-12-14 14:22:46,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:46,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838962568] [2021-12-14 14:22:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:46,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:46,803 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:46,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287198294] [2021-12-14 14:22:46,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-14 14:22:46,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:46,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:46,805 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:22:46,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-14 14:22:48,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-12-14 14:22:48,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:22:48,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 55 conjunts are in the unsatisfiable core [2021-12-14 14:22:48,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 68 proven. 143 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2021-12-14 14:22:48,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:52,835 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 119 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (* 18 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse2 (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (* 65 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (not (= (mod (+ (* 120 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 .cse2 .cse3) 12) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 1)) (<= |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~c~0#1|) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|))) (< (div (+ .cse0 12 .cse1 .cse2 .cse3) 12) (+ |c_ULTIMATE.start_main_~x~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 10 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (* 5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 1)))) is different from false [2021-12-14 14:22:56,891 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 1)) (<= |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~c~0#1|) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|))) (not (= (mod (+ (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 6 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 5 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 12) 0))) is different from false [2021-12-14 14:22:56,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:56,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838962568] [2021-12-14 14:22:56,893 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:56,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287198294] [2021-12-14 14:22:56,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287198294] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:56,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:56,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-12-14 14:22:56,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041424157] [2021-12-14 14:22:56,893 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:56,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 14:22:56,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:56,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 14:22:56,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=446, Unknown=2, NotChecked=86, Total=600 [2021-12-14 14:22:56,894 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 12 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2021-12-14 14:22:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:57,181 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-12-14 14:22:57,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-14 14:22:57,182 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 12 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) Word has length 92 [2021-12-14 14:22:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:57,182 INFO L225 Difference]: With dead ends: 62 [2021-12-14 14:22:57,182 INFO L226 Difference]: Without dead ends: 56 [2021-12-14 14:22:57,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=87, Invalid=569, Unknown=2, NotChecked=98, Total=756 [2021-12-14 14:22:57,183 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 9 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:57,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 465 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 14:22:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-14 14:22:57,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-14 14:22:57,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-14 14:22:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-12-14 14:22:57,192 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 92 [2021-12-14 14:22:57,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:57,192 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-12-14 14:22:57,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 16 states have internal predecessors, (35), 12 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2021-12-14 14:22:57,193 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-12-14 14:22:57,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-14 14:22:57,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:57,194 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 11, 11, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:57,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-14 14:22:57,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-14 14:22:57,407 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:57,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1524389175, now seen corresponding path program 10 times [2021-12-14 14:22:57,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:57,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345504801] [2021-12-14 14:22:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:57,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:57,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:57,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [461255222] [2021-12-14 14:22:57,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-14 14:22:57,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:57,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:57,416 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:22:57,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-14 14:22:57,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-14 14:22:57,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:22:57,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-14 14:22:57,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:22:57,728 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 24 proven. 165 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2021-12-14 14:22:57,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:22:57,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:22:57,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345504801] [2021-12-14 14:22:57,900 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:22:57,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461255222] [2021-12-14 14:22:57,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461255222] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 14:22:57,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-14 14:22:57,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-14 14:22:57,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415075649] [2021-12-14 14:22:57,900 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-14 14:22:57,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 14:22:57,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:22:57,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 14:22:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-12-14 14:22:57,901 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 13 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-14 14:22:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:22:58,118 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2021-12-14 14:22:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 14:22:58,118 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 13 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) Word has length 99 [2021-12-14 14:22:58,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:22:58,119 INFO L225 Difference]: With dead ends: 65 [2021-12-14 14:22:58,119 INFO L226 Difference]: Without dead ends: 59 [2021-12-14 14:22:58,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-12-14 14:22:58,119 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 2 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 14:22:58,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 599 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 14:22:58,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-14 14:22:58,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-14 14:22:58,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 16 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-14 14:22:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2021-12-14 14:22:58,125 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 99 [2021-12-14 14:22:58,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:22:58,125 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2021-12-14 14:22:58,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 13 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2021-12-14 14:22:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2021-12-14 14:22:58,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-14 14:22:58,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 14:22:58,126 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 14:22:58,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-14 14:22:58,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-14 14:22:58,338 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 14:22:58,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 14:22:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1130381638, now seen corresponding path program 11 times [2021-12-14 14:22:58,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 14:22:58,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937136417] [2021-12-14 14:22:58,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 14:22:58,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 14:22:58,343 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-14 14:22:58,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367119746] [2021-12-14 14:22:58,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-14 14:22:58,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 14:22:58,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 14:22:58,345 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 14:22:58,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-14 14:23:37,974 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-12-14 14:23:37,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 14:23:38,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-14 14:23:38,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 14:23:38,428 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 308 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-14 14:23:38,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 14:23:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 224 proven. 3 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2021-12-14 14:23:38,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 14:23:38,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937136417] [2021-12-14 14:23:38,744 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-14 14:23:38,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367119746] [2021-12-14 14:23:38,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367119746] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 14:23:38,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-14 14:23:38,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2021-12-14 14:23:38,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558187946] [2021-12-14 14:23:38,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-14 14:23:38,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-14 14:23:38,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 14:23:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-14 14:23:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2021-12-14 14:23:38,747 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 27 states have internal predecessors, (66), 26 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 25 states have call predecessors, (30), 26 states have call successors, (30) [2021-12-14 14:23:38,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 14:23:38,862 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2021-12-14 14:23:38,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-14 14:23:38,863 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 27 states have internal predecessors, (66), 26 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 25 states have call predecessors, (30), 26 states have call successors, (30) Word has length 106 [2021-12-14 14:23:38,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 14:23:38,863 INFO L225 Difference]: With dead ends: 65 [2021-12-14 14:23:38,863 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 14:23:38,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=261, Invalid=609, Unknown=0, NotChecked=0, Total=870 [2021-12-14 14:23:38,864 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 14:23:38,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 230 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 14:23:38,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 14:23:38,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 14:23:38,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 14:23:38,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 14:23:38,865 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2021-12-14 14:23:38,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 14:23:38,865 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 14:23:38,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 27 states have internal predecessors, (66), 26 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (30), 25 states have call predecessors, (30), 26 states have call successors, (30) [2021-12-14 14:23:38,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 14:23:38,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 14:23:38,867 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 14:23:38,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-14 14:23:39,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-14 14:23:39,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-14 14:23:39,913 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-14 14:23:39,914 INFO L854 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (= (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))))) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 10))) (or (and (= 7 |ULTIMATE.start_main_~c~0#1|) .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 6 |ULTIMATE.start_main_~k~0#1|)) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 2 |ULTIMATE.start_main_~k~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 (= 9 |ULTIMATE.start_main_~c~0#1|) .cse1 (< 8 |ULTIMATE.start_main_~k~0#1|) (= 9 |ULTIMATE.start_main_~y~0#1|)) (and .cse0 (<= 10 |ULTIMATE.start_main_~c~0#1|) (< 9 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 10) .cse1 (= |ULTIMATE.start_main_~y~0#1| 10)) (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) .cse1 (= 2 |ULTIMATE.start_main_~c~0#1|)) (and (= 5 |ULTIMATE.start_main_~y~0#1|) .cse0 (< 4 |ULTIMATE.start_main_~k~0#1|) (= 5 |ULTIMATE.start_main_~c~0#1|) .cse1) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| 4) .cse0 (< 3 |ULTIMATE.start_main_~k~0#1|) .cse1 (= |ULTIMATE.start_main_~c~0#1| 4)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0)) (and (= 6 |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 (= 6 |ULTIMATE.start_main_~c~0#1|) (< 5 |ULTIMATE.start_main_~k~0#1|)))) [2021-12-14 14:23:39,914 INFO L858 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2021-12-14 14:23:39,914 INFO L861 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2021-12-14 14:23:39,914 INFO L854 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 10)) [2021-12-14 14:23:39,914 INFO L858 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2021-12-14 14:23:39,914 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-14 14:23:39,914 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-14 14:23:39,914 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-14 14:23:39,915 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (let ((.cse0 (= (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))))) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 10))) (or (and (= 7 |ULTIMATE.start_main_~c~0#1|) .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 6 |ULTIMATE.start_main_~k~0#1|)) (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) .cse1 (< 2 |ULTIMATE.start_main_~k~0#1|) (= 3 |ULTIMATE.start_main_~c~0#1|)) (and .cse0 (= 9 |ULTIMATE.start_main_~c~0#1|) .cse1 (< 8 |ULTIMATE.start_main_~k~0#1|) (= 9 |ULTIMATE.start_main_~y~0#1|)) (and .cse0 (<= 10 |ULTIMATE.start_main_~c~0#1|) (< 9 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 10) .cse1 (= |ULTIMATE.start_main_~y~0#1| 10)) (and .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) .cse1 (= 2 |ULTIMATE.start_main_~c~0#1|)) (and (= 5 |ULTIMATE.start_main_~y~0#1|) .cse0 (< 4 |ULTIMATE.start_main_~k~0#1|) (= 5 |ULTIMATE.start_main_~c~0#1|) .cse1) (and .cse0 (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse1 (< 0 |ULTIMATE.start_main_~k~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| 4) .cse0 (< 3 |ULTIMATE.start_main_~k~0#1|) .cse1 (= |ULTIMATE.start_main_~c~0#1| 4)) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~y~0#1| 0) .cse1 (= |ULTIMATE.start_main_~x~0#1| 0)) (and (= 6 |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 (= 6 |ULTIMATE.start_main_~c~0#1|) (< 5 |ULTIMATE.start_main_~k~0#1|)))) [2021-12-14 14:23:39,915 INFO L854 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (let ((.cse0 (= (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))))) (or (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 3) (< 2 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 3)) (and (<= |ULTIMATE.start_main_~k~0#1| 2) .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2)) (and .cse0 (< 9 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 10) (<= |ULTIMATE.start_main_~k~0#1| 10) (= |ULTIMATE.start_main_~y~0#1| 10)) (and .cse0 (<= |ULTIMATE.start_main_~k~0#1| 9) (< 8 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 9) (= 9 |ULTIMATE.start_main_~y~0#1|)) (and (= 6 |ULTIMATE.start_main_~y~0#1|) .cse0 (<= |ULTIMATE.start_main_~k~0#1| 6) (<= |ULTIMATE.start_main_~c~0#1| 6) (< 5 |ULTIMATE.start_main_~k~0#1|)) (and (<= |ULTIMATE.start_main_~c~0#1| 4) (= |ULTIMATE.start_main_~y~0#1| 4) .cse0 (<= |ULTIMATE.start_main_~k~0#1| 4) (< 3 |ULTIMATE.start_main_~k~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and (<= |ULTIMATE.start_main_~c~0#1| 5) (= 5 |ULTIMATE.start_main_~y~0#1|) .cse0 (< 4 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 5)) (and .cse0 (<= |ULTIMATE.start_main_~c~0#1| 8) (<= |ULTIMATE.start_main_~k~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|)) (and (<= |ULTIMATE.start_main_~k~0#1| 1) .cse0 (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|)) (and .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 7) (< 6 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 7)))) [2021-12-14 14:23:39,915 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-12-14 14:23:39,915 INFO L861 garLoopResultBuilder]: At program point L41(lines 17 42) the Hoare annotation is: true [2021-12-14 14:23:39,915 INFO L854 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (= (+ (* 12 |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)))))) (or (and .cse0 (= 3 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 3) (< 2 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 3)) (and (<= |ULTIMATE.start_main_~k~0#1| 2) .cse0 (= 2 |ULTIMATE.start_main_~y~0#1|) (< 1 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2)) (and .cse0 (< 9 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 10) (<= |ULTIMATE.start_main_~k~0#1| 10) (= |ULTIMATE.start_main_~y~0#1| 10)) (and .cse0 (<= |ULTIMATE.start_main_~k~0#1| 9) (< 8 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 9) (= 9 |ULTIMATE.start_main_~y~0#1|)) (and (= 6 |ULTIMATE.start_main_~y~0#1|) .cse0 (<= |ULTIMATE.start_main_~k~0#1| 6) (<= |ULTIMATE.start_main_~c~0#1| 6) (< 5 |ULTIMATE.start_main_~k~0#1|)) (and (<= |ULTIMATE.start_main_~c~0#1| 4) (= |ULTIMATE.start_main_~y~0#1| 4) .cse0 (<= |ULTIMATE.start_main_~k~0#1| 4) (< 3 |ULTIMATE.start_main_~k~0#1|)) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)) (and (<= |ULTIMATE.start_main_~c~0#1| 5) (= 5 |ULTIMATE.start_main_~y~0#1|) .cse0 (< 4 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 5)) (and .cse0 (<= |ULTIMATE.start_main_~c~0#1| 8) (<= |ULTIMATE.start_main_~k~0#1| 8) (= |ULTIMATE.start_main_~y~0#1| 8) (< 7 |ULTIMATE.start_main_~k~0#1|)) (and (<= |ULTIMATE.start_main_~k~0#1| 1) .cse0 (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|)) (and .cse0 (= 7 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 7) (< 6 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 7)))) [2021-12-14 14:23:39,915 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2021-12-14 14:23:39,915 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-12-14 14:23:39,916 INFO L858 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-12-14 14:23:39,916 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-12-14 14:23:39,916 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2021-12-14 14:23:39,916 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2021-12-14 14:23:39,916 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2021-12-14 14:23:39,916 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2021-12-14 14:23:39,916 INFO L858 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2021-12-14 14:23:39,916 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-12-14 14:23:39,919 INFO L732 BasicCegarLoop]: Path program histogram: [11, 1, 1, 1] [2021-12-14 14:23:39,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 14:23:39,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 02:23:39 BoogieIcfgContainer [2021-12-14 14:23:39,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 14:23:39,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 14:23:39,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 14:23:39,967 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 14:23:39,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:22:29" (3/4) ... [2021-12-14 14:23:39,973 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-14 14:23:39,977 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-14 14:23:39,977 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-14 14:23:39,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-14 14:23:39,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-14 14:23:39,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-14 14:23:39,980 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-14 14:23:40,013 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 14:23:40,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 14:23:40,014 INFO L158 Benchmark]: Toolchain (without parser) took 70823.48ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 76.0MB in the beginning and 95.4MB in the end (delta: -19.4MB). Peak memory consumption was 3.7MB. Max. memory is 16.1GB. [2021-12-14 14:23:40,014 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 53.1MB in the beginning and 53.0MB in the end (delta: 71.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 14:23:40,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.97ms. Allocated memory is still 100.7MB. Free memory was 75.8MB in the beginning and 65.9MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 14:23:40,017 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.32ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 64.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 14:23:40,017 INFO L158 Benchmark]: Boogie Preprocessor took 11.88ms. Allocated memory is still 100.7MB. Free memory was 64.3MB in the beginning and 63.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 14:23:40,017 INFO L158 Benchmark]: RCFGBuilder took 183.03ms. Allocated memory is still 100.7MB. Free memory was 63.2MB in the beginning and 53.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 14:23:40,017 INFO L158 Benchmark]: TraceAbstraction took 70405.71ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 53.4MB in the beginning and 98.5MB in the end (delta: -45.2MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2021-12-14 14:23:40,018 INFO L158 Benchmark]: Witness Printer took 53.43ms. Allocated memory is still 121.6MB. Free memory was 98.5MB in the beginning and 95.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 14:23:40,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 79.7MB. Free memory was 53.1MB in the beginning and 53.0MB in the end (delta: 71.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.97ms. Allocated memory is still 100.7MB. Free memory was 75.8MB in the beginning and 65.9MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.32ms. Allocated memory is still 100.7MB. Free memory was 65.9MB in the beginning and 64.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.88ms. Allocated memory is still 100.7MB. Free memory was 64.3MB in the beginning and 63.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 183.03ms. Allocated memory is still 100.7MB. Free memory was 63.2MB in the beginning and 53.9MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 70405.71ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 53.4MB in the beginning and 98.5MB in the end (delta: -45.2MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * Witness Printer took 53.43ms. Allocated memory is still 121.6MB. Free memory was 98.5MB in the beginning and 95.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 70.3s, OverallIterations: 14, TraceHistogramMax: 14, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 51 mSDsluCounter, 3715 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3240 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2148 IncrementalHoareTripleChecker+Invalid, 2194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 475 mSDtfsCounter, 2148 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1153 GetRequests, 945 SyntacticMatches, 11 SemanticMatches, 197 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 8.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=13, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 49 PreInvPairs, 95 NumberOfFragments, 1907 HoareAnnotationTreeSize, 49 FomulaSimplifications, 180 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 558 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 43.4s SatisfiabilityAnalysisTime, 20.8s InterpolantComputationTime, 842 NumberOfCodeBlocks, 818 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 957 ConstructedInterpolants, 0 QuantifiedInterpolants, 3711 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2011 ConjunctsInSsa, 359 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 2417/3094 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((((((((((7 == c && 12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y)) && 7 == y) && k <= 10) && 6 < k) || ((((12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y) && 3 == y) && k <= 10) && 2 < k) && 3 == c)) || ((((12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y) && 9 == c) && k <= 10) && 8 < k) && 9 == y)) || (((((12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y) && 10 <= c) && 9 < k) && c <= 10) && k <= 10) && y == 10)) || ((((12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y) && 2 == y) && 1 < k) && k <= 10) && 2 == c)) || ((((5 == y && 12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y)) && 4 < k) && 5 == c) && k <= 10)) || ((((12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y) && c == 1) && y == 1) && k <= 10) && 0 < k)) || ((((y == 4 && 12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y)) && 3 < k) && k <= 10) && c == 4)) || ((((12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y) && k <= 10) && c == 8) && y == 8) && 7 < k)) || ((((0 <= k && c == 0) && y == 0) && k <= 10) && x == 0)) || ((((6 == y && 12 * x + y * y == 6 * (y * y * y * y * y) + 2 * (y * y * y * y * y * y) + 5 * (y * y * y * y)) && k <= 10) && 6 == c) && 5 < k) RESULT: Ultimate proved your program to be correct! [2021-12-14 14:23:40,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE