./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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_unwindbound10.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 ebfcdae9f2d92c4e39230ecf30ad4ac0897188e9aff6dcbde95509d87ea826ad --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:50:46,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:50:46,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:50:46,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:50:46,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:50:46,194 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:50:46,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:50:46,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:50:46,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:50:46,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:50:46,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:50:46,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:50:46,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:50:46,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:50:46,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:50:46,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:50:46,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:50:46,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:50:46,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:50:46,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:50:46,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:50:46,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:50:46,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:50:46,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:50:46,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:50:46,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:50:46,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:50:46,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:50:46,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:50:46,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:50:46,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:50:46,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:50:46,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:50:46,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:50:46,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:50:46,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:50:46,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:50:46,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:50:46,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:50:46,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:50:46,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:50:46,238 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:50:46,267 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:50:46,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:50:46,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:50:46,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:50:46,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:50:46,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:50:46,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:50:46,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:50:46,269 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:50:46,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:50:46,270 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:50:46,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:50:46,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:50:46,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:50:46,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:50:46,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:50:46,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:50:46,271 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:50:46,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:50:46,271 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:50:46,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:50:46,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:50:46,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:50:46,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:50:46,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:50:46,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:50:46,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:50:46,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:50:46,273 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:50:46,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:50:46,273 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:50:46,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:50:46,274 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:50:46,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:50:46,274 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:50:46,274 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebfcdae9f2d92c4e39230ecf30ad4ac0897188e9aff6dcbde95509d87ea826ad [2023-02-16 02:50:46,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:50:46,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:50:46,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:50:46,481 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:50:46,482 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:50:46,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c [2023-02-16 02:50:47,412 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:50:47,590 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:50:47,590 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound10.c [2023-02-16 02:50:47,594 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b4b52a9/8626003392a74582870d0a58e53d7c4f/FLAGa17549cf4 [2023-02-16 02:50:47,603 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31b4b52a9/8626003392a74582870d0a58e53d7c4f [2023-02-16 02:50:47,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:50:47,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:50:47,606 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:50:47,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:50:47,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:50:47,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c5490e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47, skipping insertion in model container [2023-02-16 02:50:47,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:50:47,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:50:47,712 WARN L237 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_unwindbound10.c[458,471] [2023-02-16 02:50:47,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:50:47,748 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:50:47,759 WARN L237 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_unwindbound10.c[458,471] [2023-02-16 02:50:47,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:50:47,790 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:50:47,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47 WrapperNode [2023-02-16 02:50:47,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:50:47,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:50:47,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:50:47,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:50:47,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,819 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-02-16 02:50:47,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:50:47,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:50:47,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:50:47,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:50:47,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,845 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,846 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:50:47,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:50:47,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:50:47,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:50:47,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (1/1) ... [2023-02-16 02:50:47,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:50:47,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:47,895 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) [2023-02-16 02:50:47,935 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 [2023-02-16 02:50:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:50:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:50:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:50:47,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:50:47,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:50:47,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:50:47,996 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:50:47,997 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:50:48,115 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:50:48,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:50:48,119 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 02:50:48,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:50:48 BoogieIcfgContainer [2023-02-16 02:50:48,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:50:48,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:50:48,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:50:48,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:50:48,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:50:47" (1/3) ... [2023-02-16 02:50:48,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c7befe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:50:48, skipping insertion in model container [2023-02-16 02:50:48,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:50:47" (2/3) ... [2023-02-16 02:50:48,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c7befe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:50:48, skipping insertion in model container [2023-02-16 02:50:48,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:50:48" (3/3) ... [2023-02-16 02:50:48,126 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound10.c [2023-02-16 02:50:48,144 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:50:48,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:50:48,199 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:50:48,217 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@31f8225e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:50:48,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:50:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:50:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 02:50:48,238 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:48,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:48,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:48,257 INFO L85 PathProgramCache]: Analyzing trace with hash -579246775, now seen corresponding path program 1 times [2023-02-16 02:50:48,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:48,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295948613] [2023-02-16 02:50:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:48,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:50:48,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:48,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295948613] [2023-02-16 02:50:48,340 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 02:50:48,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650284880] [2023-02-16 02:50:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:48,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:48,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:48,344 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) [2023-02-16 02:50:48,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 02:50:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:50:48,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 02:50:48,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:50:48,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:50:48,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650284880] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:50:48,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:50:48,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:50:48,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271378304] [2023-02-16 02:50:48,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:50:48,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:50:48,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:48,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:50:48,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:50:48,426 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:50:48,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:48,439 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2023-02-16 02:50:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:50:48,440 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 02:50:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:48,445 INFO L225 Difference]: With dead ends: 37 [2023-02-16 02:50:48,445 INFO L226 Difference]: Without dead ends: 16 [2023-02-16 02:50:48,447 INFO L412 NwaCegarLoop]: 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 [2023-02-16 02:50:48,449 INFO L413 NwaCegarLoop]: 23 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, 23 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 [2023-02-16 02:50:48,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:50:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-16 02:50:48,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-02-16 02:50:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:50:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-02-16 02:50:48,471 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2023-02-16 02:50:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:48,471 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-02-16 02:50:48,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:50:48,472 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-02-16 02:50:48,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 02:50:48,472 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:48,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:48,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 02:50:48,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-16 02:50:48,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:48,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1986551203, now seen corresponding path program 1 times [2023-02-16 02:50:48,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:48,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146567775] [2023-02-16 02:50:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:48,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:50:48,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:48,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146567775] [2023-02-16 02:50:48,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 02:50:48,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178452389] [2023-02-16 02:50:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:48,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:48,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:48,730 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) [2023-02-16 02:50:48,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 02:50:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:50:48,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 02:50:48,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:50:48,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:50:48,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178452389] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:50:48,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:50:48,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 02:50:48,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988744377] [2023-02-16 02:50:48,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:50:48,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 02:50:48,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 02:50:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 02:50:48,802 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:50:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:48,813 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-02-16 02:50:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 02:50:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 02:50:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:48,814 INFO L225 Difference]: With dead ends: 26 [2023-02-16 02:50:48,814 INFO L226 Difference]: Without dead ends: 18 [2023-02-16 02:50:48,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 02:50:48,815 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:50:48,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:50:48,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-16 02:50:48,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-16 02:50:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:50:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-02-16 02:50:48,819 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2023-02-16 02:50:48,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:48,820 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-02-16 02:50:48,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:50:48,820 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-02-16 02:50:48,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 02:50:48,820 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:48,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:48,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 02:50:49,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-16 02:50:49,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1984763743, now seen corresponding path program 1 times [2023-02-16 02:50:49,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:49,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282602698] [2023-02-16 02:50:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:49,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:49,048 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:50:49,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [510420606] [2023-02-16 02:50:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:49,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:49,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:49,057 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) [2023-02-16 02:50:49,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 02:50:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:50:49,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 02:50:49,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:50:49,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:50:49,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:49,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282602698] [2023-02-16 02:50:49,175 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:50:49,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510420606] [2023-02-16 02:50:49,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510420606] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:50:49,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:50:49,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 02:50:49,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507002826] [2023-02-16 02:50:49,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:50:49,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:50:49,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:49,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:50:49,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 02:50:49,177 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:50:49,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:49,511 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2023-02-16 02:50:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 02:50:49,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 02:50:49,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:49,512 INFO L225 Difference]: With dead ends: 28 [2023-02-16 02:50:49,512 INFO L226 Difference]: Without dead ends: 24 [2023-02-16 02:50:49,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:50:49,513 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 02:50:49,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 02:50:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-16 02:50:49,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-16 02:50:49,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:50:49,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-16 02:50:49,518 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2023-02-16 02:50:49,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:49,518 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-16 02:50:49,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:50:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-16 02:50:49,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 02:50:49,519 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:49,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:49,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:50:49,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:49,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:49,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:49,720 INFO L85 PathProgramCache]: Analyzing trace with hash -69803837, now seen corresponding path program 1 times [2023-02-16 02:50:49,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:49,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214747877] [2023-02-16 02:50:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:49,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:49,729 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:50:49,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [978595161] [2023-02-16 02:50:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:49,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:49,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:49,731 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) [2023-02-16 02:50:49,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 02:50:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:50:49,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 02:50:49,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:50:49,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:50:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:50:49,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:49,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214747877] [2023-02-16 02:50:49,827 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:50:49,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978595161] [2023-02-16 02:50:49,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978595161] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:50:49,827 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:50:49,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-16 02:50:49,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778869] [2023-02-16 02:50:49,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:50:49,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 02:50:49,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:49,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 02:50:49,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:50:49,829 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:50:49,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:49,906 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2023-02-16 02:50:49,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 02:50:49,907 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-16 02:50:49,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:49,909 INFO L225 Difference]: With dead ends: 58 [2023-02-16 02:50:49,910 INFO L226 Difference]: Without dead ends: 50 [2023-02-16 02:50:49,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-16 02:50:49,914 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:50:49,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 82 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:50:49,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-16 02:50:49,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2023-02-16 02:50:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 34 states have internal predecessors, (38), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 02:50:49,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2023-02-16 02:50:49,931 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 18 [2023-02-16 02:50:49,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:49,932 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2023-02-16 02:50:49,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:50:49,935 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2023-02-16 02:50:49,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 02:50:49,935 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:49,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:49,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 02:50:50,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:50,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash -68016377, now seen corresponding path program 1 times [2023-02-16 02:50:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:50,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983282246] [2023-02-16 02:50:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:50,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:50,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:50:50,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951902103] [2023-02-16 02:50:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:50,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:50,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:50,165 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) [2023-02-16 02:50:50,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 02:50:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:50:50,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 02:50:50,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:50:50,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:50:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:50:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:50,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983282246] [2023-02-16 02:50:50,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:50:50,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951902103] [2023-02-16 02:50:50,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951902103] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:50:50,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:50:50,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-02-16 02:50:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183496295] [2023-02-16 02:50:50,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:50:50,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 02:50:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 02:50:50,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-16 02:50:50,373 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:50:50,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:50,461 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2023-02-16 02:50:50,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 02:50:50,462 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-16 02:50:50,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:50,462 INFO L225 Difference]: With dead ends: 60 [2023-02-16 02:50:50,463 INFO L226 Difference]: Without dead ends: 52 [2023-02-16 02:50:50,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-02-16 02:50:50,463 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 15 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:50:50,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:50:50,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-16 02:50:50,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2023-02-16 02:50:50,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.121212121212121) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 02:50:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2023-02-16 02:50:50,472 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 18 [2023-02-16 02:50:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:50,473 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2023-02-16 02:50:50,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:50:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2023-02-16 02:50:50,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 02:50:50,474 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:50,474 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:50,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 02:50:50,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:50,680 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:50,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash 156635680, now seen corresponding path program 1 times [2023-02-16 02:50:50,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:50,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586134539] [2023-02-16 02:50:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:50,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:50,689 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:50:50,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1715205184] [2023-02-16 02:50:50,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:50,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:50,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:50,698 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) [2023-02-16 02:50:50,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 02:50:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:50:50,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-16 02:50:50,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:50:50,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:50:51,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:51,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586134539] [2023-02-16 02:50:51,099 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:50:51,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715205184] [2023-02-16 02:50:51,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715205184] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:50:51,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:50:51,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-02-16 02:50:51,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683143672] [2023-02-16 02:50:51,100 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 02:50:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 02:50:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:51,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 02:50:51,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-02-16 02:50:51,102 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:50:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:51,210 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-02-16 02:50:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 02:50:51,211 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-02-16 02:50:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:51,212 INFO L225 Difference]: With dead ends: 51 [2023-02-16 02:50:51,212 INFO L226 Difference]: Without dead ends: 45 [2023-02-16 02:50:51,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-02-16 02:50:51,213 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:50:51,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 79 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:50:51,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-16 02:50:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-02-16 02:50:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 34 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:50:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-02-16 02:50:51,221 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2023-02-16 02:50:51,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:51,221 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-02-16 02:50:51,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:50:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-02-16 02:50:51,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-16 02:50:51,222 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:51,222 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:51,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 02:50:51,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:51,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:51,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:51,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1793229318, now seen corresponding path program 2 times [2023-02-16 02:50:51,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:51,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141693483] [2023-02-16 02:50:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:51,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:51,436 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:50:51,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1038626352] [2023-02-16 02:50:51,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:50:51,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:51,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:51,441 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) [2023-02-16 02:50:51,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 02:50:51,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:50:51,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:50:51,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-16 02:50:51,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:51,664 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 17 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 02:50:51,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:50:55,946 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (not (= (mod (+ .cse0 (* 10 |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|) (* 7 |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|) (* 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|)) 12) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) .cse0 1)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)))))) is different from false [2023-02-16 02:50:55,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:55,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141693483] [2023-02-16 02:50:55,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:50:55,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038626352] [2023-02-16 02:50:55,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038626352] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:50:55,949 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:50:55,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-16 02:50:55,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175261756] [2023-02-16 02:50:55,949 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 02:50:55,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 02:50:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 02:50:55,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=251, Unknown=1, NotChecked=32, Total=342 [2023-02-16 02:50:55,950 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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) [2023-02-16 02:50:56,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:56,088 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2023-02-16 02:50:56,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 02:50:56,089 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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) Word has length 37 [2023-02-16 02:50:56,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:56,089 INFO L225 Difference]: With dead ends: 50 [2023-02-16 02:50:56,090 INFO L226 Difference]: Without dead ends: 44 [2023-02-16 02:50:56,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=81, Invalid=342, Unknown=1, NotChecked=38, Total=462 [2023-02-16 02:50:56,090 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 11 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:50:56,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 116 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:50:56,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-16 02:50:56,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-02-16 02:50:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 02:50:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2023-02-16 02:50:56,096 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 37 [2023-02-16 02:50:56,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:56,096 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2023-02-16 02:50:56,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 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) [2023-02-16 02:50:56,096 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2023-02-16 02:50:56,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-16 02:50:56,097 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:56,097 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:56,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 02:50:56,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:56,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1183870932, now seen corresponding path program 3 times [2023-02-16 02:50:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:56,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909510325] [2023-02-16 02:50:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:56,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:56,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:50:56,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [235175964] [2023-02-16 02:50:56,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 02:50:56,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:56,311 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) [2023-02-16 02:50:56,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 02:50:56,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-16 02:50:56,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:50:56,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-16 02:50:56,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 02:50:56,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:50:56,751 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 02:50:56,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:56,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909510325] [2023-02-16 02:50:56,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:50:56,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235175964] [2023-02-16 02:50:56,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235175964] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:50:56,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:50:56,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-02-16 02:50:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820205443] [2023-02-16 02:50:56,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:50:56,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 02:50:56,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:56,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 02:50:56,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-02-16 02:50:56,754 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand has 18 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-16 02:50:57,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:57,394 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2023-02-16 02:50:57,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 02:50:57,394 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 45 [2023-02-16 02:50:57,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:57,395 INFO L225 Difference]: With dead ends: 74 [2023-02-16 02:50:57,395 INFO L226 Difference]: Without dead ends: 66 [2023-02-16 02:50:57,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=187, Invalid=683, Unknown=0, NotChecked=0, Total=870 [2023-02-16 02:50:57,396 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:50:57,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 188 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:50:57,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-16 02:50:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2023-02-16 02:50:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 02:50:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2023-02-16 02:50:57,408 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 45 [2023-02-16 02:50:57,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:57,408 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2023-02-16 02:50:57,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 10 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-16 02:50:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2023-02-16 02:50:57,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-16 02:50:57,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:57,409 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:57,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-16 02:50:57,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-16 02:50:57,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1854611729, now seen corresponding path program 1 times [2023-02-16 02:50:57,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:57,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770101366] [2023-02-16 02:50:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:57,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:57,622 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:50:57,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630992044] [2023-02-16 02:50:57,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:57,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:57,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:57,623 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) [2023-02-16 02:50:57,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 02:50:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:50:57,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 02:50:57,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 02:50:57,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:50:57,780 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-16 02:50:57,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770101366] [2023-02-16 02:50:57,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:50:57,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630992044] [2023-02-16 02:50:57,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630992044] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:50:57,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:50:57,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-16 02:50:57,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983495469] [2023-02-16 02:50:57,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:50:57,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 02:50:57,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:57,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 02:50:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:50:57,783 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-16 02:50:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:57,926 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2023-02-16 02:50:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 02:50:57,926 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 47 [2023-02-16 02:50:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:57,927 INFO L225 Difference]: With dead ends: 114 [2023-02-16 02:50:57,927 INFO L226 Difference]: Without dead ends: 104 [2023-02-16 02:50:57,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-02-16 02:50:57,928 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 56 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:50:57,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 141 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:50:57,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-02-16 02:50:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2023-02-16 02:50:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 71 states have internal predecessors, (73), 14 states have call successors, (14), 11 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-16 02:50:57,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2023-02-16 02:50:57,955 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 47 [2023-02-16 02:50:57,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:57,955 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2023-02-16 02:50:57,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 states have internal predecessors, (56), 9 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-16 02:50:57,955 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2023-02-16 02:50:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-02-16 02:50:57,957 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:57,957 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:57,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 02:50:58,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:58,169 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:58,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:58,169 INFO L85 PathProgramCache]: Analyzing trace with hash -317230276, now seen corresponding path program 4 times [2023-02-16 02:50:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:58,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384369543] [2023-02-16 02:50:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:58,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:58,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:50:58,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1203167538] [2023-02-16 02:50:58,176 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 02:50:58,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:58,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:58,178 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) [2023-02-16 02:50:58,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 02:50:58,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 02:50:58,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:50:58,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-16 02:50:58,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:50:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 18 proven. 112 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-02-16 02:50:58,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:50:58,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:50:58,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384369543] [2023-02-16 02:50:58,535 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:50:58,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203167538] [2023-02-16 02:50:58,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203167538] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:50:58,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:50:58,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-02-16 02:50:58,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559013365] [2023-02-16 02:50:58,536 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 02:50:58,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 02:50:58,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:50:58,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 02:50:58,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-02-16 02:50:58,537 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 02:50:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:50:58,733 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2023-02-16 02:50:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 02:50:58,734 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2023-02-16 02:50:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:50:58,735 INFO L225 Difference]: With dead ends: 99 [2023-02-16 02:50:58,735 INFO L226 Difference]: Without dead ends: 93 [2023-02-16 02:50:58,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-02-16 02:50:58,735 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 2 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:50:58,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 335 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:50:58,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-16 02:50:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-02-16 02:50:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 70 states have internal predecessors, (72), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 02:50:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2023-02-16 02:50:58,748 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 77 [2023-02-16 02:50:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:50:58,748 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2023-02-16 02:50:58,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 9 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 02:50:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2023-02-16 02:50:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-02-16 02:50:58,749 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:50:58,749 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:50:58,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 02:50:58,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-16 02:50:58,954 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:50:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:50:58,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1298793238, now seen corresponding path program 5 times [2023-02-16 02:50:58,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:50:58,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576975812] [2023-02-16 02:50:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:50:58,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:50:58,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:50:58,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329074205] [2023-02-16 02:50:58,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-16 02:50:58,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:50:58,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:50:58,964 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) [2023-02-16 02:50:58,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 02:51:05,830 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-16 02:51:05,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:51:05,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-16 02:51:05,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:51:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 46 proven. 145 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-16 02:51:06,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:51:12,091 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) .cse0) (not (= (mod (+ .cse0 (* 10 |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|) (* 7 |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|) (* 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|)) 12) 0)))) is different from false [2023-02-16 02:51:34,138 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_30| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|))) (or (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_30| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|) .cse0) (= (mod (+ (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|) .cse0 (* 7 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|)) 12) 0))))) is different from true [2023-02-16 02:51:52,597 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_30| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|))) (or (= (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_30| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|) .cse0) (= (mod (+ (* 6 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|) (* 10 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|) .cse0 (* 7 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_52|)) 12) 0))))) is different from true [2023-02-16 02:51:58,615 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (= (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) .cse0) (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|) (not (= (mod (+ .cse0 (* 10 |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|) (* 7 |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|) (* 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|)) 12) 0)))) is different from false [2023-02-16 02:52:08,708 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (not (= (mod (+ .cse0 (* 10 |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|) (* 7 |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|) (* 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|)) 12) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) .cse0 1)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)))))) is different from false [2023-02-16 02:52:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:52:10,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576975812] [2023-02-16 02:52:10,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:52:10,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329074205] [2023-02-16 02:52:10,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329074205] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:52:10,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:52:10,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-02-16 02:52:10,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988882799] [2023-02-16 02:52:10,722 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 02:52:10,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 02:52:10,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:52:10,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 02:52:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=274, Unknown=5, NotChecked=180, Total=506 [2023-02-16 02:52:10,723 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-16 02:52:10,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:52:11,000 INFO L93 Difference]: Finished difference Result 98 states and 101 transitions. [2023-02-16 02:52:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 02:52:11,000 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 85 [2023-02-16 02:52:11,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:52:11,001 INFO L225 Difference]: With dead ends: 98 [2023-02-16 02:52:11,001 INFO L226 Difference]: Without dead ends: 92 [2023-02-16 02:52:11,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=65, Invalid=370, Unknown=5, NotChecked=210, Total=650 [2023-02-16 02:52:11,002 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:52:11,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 356 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:52:11,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-16 02:52:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-02-16 02:52:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 69 states have internal predecessors, (71), 12 states have call successors, (12), 11 states have call predecessors, (12), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 02:52:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2023-02-16 02:52:11,011 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 85 [2023-02-16 02:52:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:52:11,011 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2023-02-16 02:52:11,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-16 02:52:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2023-02-16 02:52:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-02-16 02:52:11,012 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:52:11,012 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:52:11,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 02:52:11,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 02:52:11,223 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:52:11,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:52:11,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1207691024, now seen corresponding path program 6 times [2023-02-16 02:52:11,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:52:11,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599297150] [2023-02-16 02:52:11,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:52:11,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:52:11,237 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:52:11,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720546386] [2023-02-16 02:52:11,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-16 02:52:11,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:52:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:52:11,239 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) [2023-02-16 02:52:11,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 02:52:12,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-02-16 02:52:12,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:52:12,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-16 02:52:12,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:52:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 30 proven. 202 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-16 02:52:12,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:52:12,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:52:12,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599297150] [2023-02-16 02:52:12,464 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:52:12,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720546386] [2023-02-16 02:52:12,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720546386] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:52:12,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:52:12,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-02-16 02:52:12,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74466498] [2023-02-16 02:52:12,464 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 02:52:12,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-16 02:52:12,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:52:12,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-16 02:52:12,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-02-16 02:52:12,466 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 02:52:12,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:52:12,790 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2023-02-16 02:52:12,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 02:52:12,790 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 93 [2023-02-16 02:52:12,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:52:12,792 INFO L225 Difference]: With dead ends: 100 [2023-02-16 02:52:12,792 INFO L226 Difference]: Without dead ends: 94 [2023-02-16 02:52:12,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-02-16 02:52:12,793 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 02:52:12,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 385 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 02:52:12,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-16 02:52:12,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-02-16 02:52:12,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 02:52:12,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 97 transitions. [2023-02-16 02:52:12,809 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 97 transitions. Word has length 93 [2023-02-16 02:52:12,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:52:12,810 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 97 transitions. [2023-02-16 02:52:12,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 11 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 02:52:12,810 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 97 transitions. [2023-02-16 02:52:12,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-16 02:52:12,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:52:12,815 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:52:12,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 02:52:13,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-16 02:52:13,023 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:52:13,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:52:13,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1956819211, now seen corresponding path program 2 times [2023-02-16 02:52:13,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:52:13,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402046411] [2023-02-16 02:52:13,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:52:13,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:52:13,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:52:13,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611982733] [2023-02-16 02:52:13,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:52:13,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:52:13,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:52:13,043 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) [2023-02-16 02:52:13,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 02:52:13,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:52:13,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-02-16 02:52:13,397 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 02:52:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 02:52:13,692 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 02:52:13,693 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-16 02:52:13,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:52:13,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 02:52:13,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 02:52:13,903 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1] [2023-02-16 02:52:13,906 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:52:13,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:52:13 BoogieIcfgContainer [2023-02-16 02:52:13,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:52:13,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:52:13,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:52:13,936 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:52:13,937 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:50:48" (3/4) ... [2023-02-16 02:52:13,938 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-16 02:52:13,986 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 02:52:13,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:52:13,987 INFO L158 Benchmark]: Toolchain (without parser) took 86381.15ms. Allocated memory was 205.5MB in the beginning and 247.5MB in the end (delta: 41.9MB). Free memory was 167.9MB in the beginning and 163.4MB in the end (delta: 4.5MB). Peak memory consumption was 48.5MB. Max. memory is 16.1GB. [2023-02-16 02:52:13,987 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:52:13,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.35ms. Allocated memory is still 205.5MB. Free memory was 167.8MB in the beginning and 156.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 02:52:13,987 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.05ms. Allocated memory is still 205.5MB. Free memory was 156.7MB in the beginning and 155.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:52:13,987 INFO L158 Benchmark]: Boogie Preprocessor took 30.61ms. Allocated memory is still 205.5MB. Free memory was 155.4MB in the beginning and 153.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:52:13,988 INFO L158 Benchmark]: RCFGBuilder took 269.03ms. Allocated memory is still 205.5MB. Free memory was 153.9MB in the beginning and 143.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:52:13,988 INFO L158 Benchmark]: TraceAbstraction took 85814.05ms. Allocated memory was 205.5MB in the beginning and 247.5MB in the end (delta: 41.9MB). Free memory was 142.8MB in the beginning and 168.6MB in the end (delta: -25.8MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2023-02-16 02:52:13,988 INFO L158 Benchmark]: Witness Printer took 50.24ms. Allocated memory is still 247.5MB. Free memory was 168.6MB in the beginning and 163.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 02:52:13,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 186.35ms. Allocated memory is still 205.5MB. Free memory was 167.8MB in the beginning and 156.7MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.05ms. Allocated memory is still 205.5MB. Free memory was 156.7MB in the beginning and 155.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.61ms. Allocated memory is still 205.5MB. Free memory was 155.4MB in the beginning and 153.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 269.03ms. Allocated memory is still 205.5MB. Free memory was 153.9MB in the beginning and 143.4MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 85814.05ms. Allocated memory was 205.5MB in the beginning and 247.5MB in the end (delta: 41.9MB). Free memory was 142.8MB in the beginning and 168.6MB in the end (delta: -25.8MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Witness Printer took 50.24ms. Allocated memory is still 247.5MB. Free memory was 168.6MB in the beginning and 163.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 VAL [c=0, counter=0, k=11, x=0, y=0] [L28] EXPR counter++ VAL [c=0, counter=1, counter++=0, k=11, x=0, y=0] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=0, counter=1, k=11, x=0, y=0] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=1, counter=1, k=11, x=1, y=1] [L28] EXPR counter++ VAL [c=1, counter=2, counter++=1, k=11, x=1, y=1] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=2] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=1, counter=2, k=11, x=1, y=1] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=2, counter=2, k=11, x=33, y=2] [L28] EXPR counter++ VAL [c=2, counter=3, counter++=2, k=11, x=33, y=2] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=3] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=2, counter=3, k=11, x=33, y=2] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=3, counter=3, k=11, x=276, y=3] [L28] EXPR counter++ VAL [c=3, counter=4, counter++=3, k=11, x=276, y=3] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=4] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=3, counter=4, k=11, x=276, y=3] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=4, counter=4, k=11, x=1300, y=4] [L28] EXPR counter++ VAL [c=4, counter=5, counter++=4, k=11, x=1300, y=4] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=5] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=4, counter=5, k=11, x=1300, y=4] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=5, counter=5, k=11, x=4425, y=5] [L28] EXPR counter++ VAL [c=5, counter=6, counter++=5, k=11, x=4425, y=5] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=6] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=5, counter=6, k=11, x=4425, y=5] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=6, counter=6, k=11, x=12201, y=6] [L28] EXPR counter++ VAL [c=6, counter=7, counter++=6, k=11, x=12201, y=6] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=7] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=6, counter=7, k=11, x=12201, y=6] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=7, counter=7, k=11, x=29008, y=7] [L28] EXPR counter++ VAL [c=7, counter=8, counter++=7, k=11, x=29008, y=7] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=8] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=7, counter=8, k=11, x=29008, y=7] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=8, counter=8, k=11, x=61776, y=8] [L28] EXPR counter++ VAL [c=8, counter=9, counter++=8, k=11, x=61776, y=8] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=9] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=8, counter=9, k=11, x=61776, y=8] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=9, counter=9, k=11, x=120825, y=9] [L28] EXPR counter++ VAL [c=9, counter=10, counter++=9, k=11, x=120825, y=9] [L28] COND TRUE counter++<10 [L29] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=10] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L29] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=9, counter=10, k=11, x=120825, y=9] [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y * y + x VAL [c=10, counter=10, k=11, x=220825, y=10] [L28] EXPR counter++ VAL [c=10, counter=11, counter++=10, k=11, x=220825, y=10] [L28] COND FALSE !(counter++<10) [L39] CALL __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [\old(cond)=1, counter=11] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L39] RET __VERIFIER_assert(-2*y*y*y*y*y*y - 6 * y*y*y*y*y - 5 * y*y*y*y + y*y + 12*x == 0) VAL [c=10, counter=11, k=11, x=220825, y=10] [L40] CALL __VERIFIER_assert(k*y == y*y) VAL [\old(cond)=0, counter=11] [L10] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=11] [L12] reach_error() VAL [\old(cond)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 85.7s, OverallIterations: 13, TraceHistogramMax: 12, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 215 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 210 mSDsluCounter, 1897 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1577 mSDsCounter, 93 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2132 IncrementalHoareTripleChecker+Invalid, 2225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 93 mSolverCounterUnsat, 320 mSDtfsCounter, 2132 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 727 GetRequests, 548 SyntacticMatches, 3 SemanticMatches, 176 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 14.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=9, InterpolantAutomatonStates: 135, 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, 12 MinimizatonAttempts, 28 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 8.3s SatisfiabilityAnalysisTime, 71.2s InterpolantComputationTime, 592 NumberOfCodeBlocks, 581 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 590 ConstructedInterpolants, 0 QuantifiedInterpolants, 2692 SizeOfPredicates, 39 NumberOfNonLiveVariables, 1456 ConjunctsInSsa, 271 ConjunctsInUnsatCore, 16 InterpolantComputations, 3 PerfectInterpolantSequences, 810/1436 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 RESULT: Ultimate proved your program to be incorrect! [2023-02-16 02:52:14,019 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE