./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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_unwindbound100.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 e40af029af23d5cbf5d8bd74acfdc7af42526c81be3e447d3e43ec16d52857d1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 04:08:29,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 04:08:29,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 04:08:29,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 04:08:29,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 04:08:29,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 04:08:29,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 04:08:29,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 04:08:29,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 04:08:29,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 04:08:29,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 04:08:29,400 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 04:08:29,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 04:08:29,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 04:08:29,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 04:08:29,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 04:08:29,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 04:08:29,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 04:08:29,406 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 04:08:29,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 04:08:29,410 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 04:08:29,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 04:08:29,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 04:08:29,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 04:08:29,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 04:08:29,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 04:08:29,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 04:08:29,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 04:08:29,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 04:08:29,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 04:08:29,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 04:08:29,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 04:08:29,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 04:08:29,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 04:08:29,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 04:08:29,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 04:08:29,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 04:08:29,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 04:08:29,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 04:08:29,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 04:08:29,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 04:08:29,427 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 04:08:29,455 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 04:08:29,455 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 04:08:29,456 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 04:08:29,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 04:08:29,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 04:08:29,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 04:08:29,457 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 04:08:29,457 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 04:08:29,457 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 04:08:29,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 04:08:29,458 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 04:08:29,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 04:08:29,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 04:08:29,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 04:08:29,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 04:08:29,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 04:08:29,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 04:08:29,459 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 04:08:29,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 04:08:29,459 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 04:08:29,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 04:08:29,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 04:08:29,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 04:08:29,460 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 04:08:29,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:08:29,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 04:08:29,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 04:08:29,461 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 04:08:29,461 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 04:08:29,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 04:08:29,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 04:08:29,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 04:08:29,462 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 04:08:29,462 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 04:08:29,462 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 04:08:29,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e40af029af23d5cbf5d8bd74acfdc7af42526c81be3e447d3e43ec16d52857d1 [2023-02-18 04:08:29,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 04:08:29,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 04:08:29,668 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 04:08:29,669 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 04:08:29,670 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 04:08:29,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound100.c [2023-02-18 04:08:30,567 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 04:08:30,733 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 04:08:30,733 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_unwindbound100.c [2023-02-18 04:08:30,738 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a433160a/6987e848f7ac4a468971c0d2bd2618a5/FLAG14ae539cb [2023-02-18 04:08:30,754 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a433160a/6987e848f7ac4a468971c0d2bd2618a5 [2023-02-18 04:08:30,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 04:08:30,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 04:08:30,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 04:08:30,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 04:08:30,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 04:08:30,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a78544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30, skipping insertion in model container [2023-02-18 04:08:30,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 04:08:30,789 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 04:08:30,901 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_unwindbound100.c[458,471] [2023-02-18 04:08:30,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:08:30,934 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 04:08:30,944 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_unwindbound100.c[458,471] [2023-02-18 04:08:30,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:08:30,961 INFO L208 MainTranslator]: Completed translation [2023-02-18 04:08:30,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30 WrapperNode [2023-02-18 04:08:30,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 04:08:30,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 04:08:30,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 04:08:30,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 04:08:30,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,973 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,987 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2023-02-18 04:08:30,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 04:08:30,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 04:08:30,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 04:08:30,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 04:08:30,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,998 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:30,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:31,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 04:08:31,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 04:08:31,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 04:08:31,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 04:08:31,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (1/1) ... [2023-02-18 04:08:31,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:08:31,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:31,036 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) [2023-02-18 04:08:31,040 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 [2023-02-18 04:08:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 04:08:31,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 04:08:31,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 04:08:31,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 04:08:31,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 04:08:31,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 04:08:31,117 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 04:08:31,118 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 04:08:31,227 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 04:08:31,231 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 04:08:31,232 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 04:08:31,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:08:31 BoogieIcfgContainer [2023-02-18 04:08:31,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 04:08:31,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 04:08:31,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 04:08:31,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 04:08:31,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:08:30" (1/3) ... [2023-02-18 04:08:31,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687e38a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:08:31, skipping insertion in model container [2023-02-18 04:08:31,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:08:30" (2/3) ... [2023-02-18 04:08:31,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687e38a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:08:31, skipping insertion in model container [2023-02-18 04:08:31,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:08:31" (3/3) ... [2023-02-18 04:08:31,238 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_unwindbound100.c [2023-02-18 04:08:31,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 04:08:31,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 04:08:31,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 04:08:31,283 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;@2d9ffe7e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 04:08:31,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 04:08:31,286 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) [2023-02-18 04:08:31,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 04:08:31,290 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:31,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:31,291 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:31,294 INFO L85 PathProgramCache]: Analyzing trace with hash -579246775, now seen corresponding path program 1 times [2023-02-18 04:08:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:31,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418025247] [2023-02-18 04:08:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:31,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:31,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:31,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418025247] [2023-02-18 04:08:31,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 04:08:31,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383350046] [2023-02-18 04:08:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:31,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:31,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:31,446 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) [2023-02-18 04:08:31,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 04:08:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:31,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 04:08:31,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:08:31,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:08:31,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383350046] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:08:31,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:08:31,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 04:08:31,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355150387] [2023-02-18 04:08:31,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:08:31,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 04:08:31,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:31,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 04:08:31,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 04:08:31,562 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) [2023-02-18 04:08:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:31,575 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2023-02-18 04:08:31,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 04:08:31,577 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 [2023-02-18 04:08:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:31,581 INFO L225 Difference]: With dead ends: 37 [2023-02-18 04:08:31,581 INFO L226 Difference]: Without dead ends: 16 [2023-02-18 04:08:31,583 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 [2023-02-18 04:08:31,588 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 [2023-02-18 04:08:31,589 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] [2023-02-18 04:08:31,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-18 04:08:31,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-02-18 04:08:31,609 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) [2023-02-18 04:08:31,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-02-18 04:08:31,610 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2023-02-18 04:08:31,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:31,610 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-02-18 04:08:31,610 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) [2023-02-18 04:08:31,611 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-02-18 04:08:31,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 04:08:31,611 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:31,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:31,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:31,813 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 [2023-02-18 04:08:31,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:31,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:31,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1986551203, now seen corresponding path program 1 times [2023-02-18 04:08:31,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:31,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116764678] [2023-02-18 04:08:31,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:31,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:31,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:31,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116764678] [2023-02-18 04:08:31,840 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 04:08:31,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702288487] [2023-02-18 04:08:31,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:31,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:31,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:31,847 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) [2023-02-18 04:08:31,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 04:08:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:31,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 04:08:31,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:08:31,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:08:31,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702288487] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:08:31,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:08:31,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 04:08:31,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496595034] [2023-02-18 04:08:31,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:08:31,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 04:08:31,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:31,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 04:08:31,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 04:08:31,919 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) [2023-02-18 04:08:31,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:31,929 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-02-18 04:08:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 04:08:31,930 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 [2023-02-18 04:08:31,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:31,930 INFO L225 Difference]: With dead ends: 26 [2023-02-18 04:08:31,930 INFO L226 Difference]: Without dead ends: 18 [2023-02-18 04:08:31,931 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 [2023-02-18 04:08:31,932 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 [2023-02-18 04:08:31,932 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] [2023-02-18 04:08:31,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-02-18 04:08:31,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-02-18 04:08:31,934 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) [2023-02-18 04:08:31,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-02-18 04:08:31,935 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 10 [2023-02-18 04:08:31,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:31,935 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-02-18 04:08:31,936 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) [2023-02-18 04:08:31,936 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-02-18 04:08:31,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 04:08:31,936 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:31,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:31,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 04:08:32,139 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 [2023-02-18 04:08:32,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:32,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1984763743, now seen corresponding path program 1 times [2023-02-18 04:08:32,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:32,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823907723] [2023-02-18 04:08:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:32,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:32,150 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:32,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547562060] [2023-02-18 04:08:32,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:32,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:32,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:32,152 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) [2023-02-18 04:08:32,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 04:08:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:32,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 04:08:32,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:32,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:08:32,212 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:08:32,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:32,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823907723] [2023-02-18 04:08:32,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:32,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547562060] [2023-02-18 04:08:32,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547562060] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:08:32,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:08:32,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 04:08:32,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593167913] [2023-02-18 04:08:32,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:08:32,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 04:08:32,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:32,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 04:08:32,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 04:08:32,215 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2023-02-18 04:08:32,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:32,422 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2023-02-18 04:08:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 04:08:32,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 [2023-02-18 04:08:32,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:32,425 INFO L225 Difference]: With dead ends: 28 [2023-02-18 04:08:32,425 INFO L226 Difference]: Without dead ends: 24 [2023-02-18 04:08:32,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:08:32,426 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:32,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 56 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:08:32,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-18 04:08:32,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-18 04:08:32,434 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) [2023-02-18 04:08:32,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2023-02-18 04:08:32,435 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 10 [2023-02-18 04:08:32,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:32,435 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2023-02-18 04:08:32,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2023-02-18 04:08:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2023-02-18 04:08:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 04:08:32,436 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:32,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:32,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:32,637 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 [2023-02-18 04:08:32,637 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:32,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash -69803837, now seen corresponding path program 1 times [2023-02-18 04:08:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:32,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655847536] [2023-02-18 04:08:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:32,662 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:32,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167175728] [2023-02-18 04:08:32,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:32,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:32,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:32,668 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) [2023-02-18 04:08:32,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 04:08:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:32,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 04:08:32,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:08:32,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:08:32,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655847536] [2023-02-18 04:08:32,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:32,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167175728] [2023-02-18 04:08:32,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167175728] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:08:32,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:08:32,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-18 04:08:32,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330585390] [2023-02-18 04:08:32,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:32,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 04:08:32,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:32,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 04:08:32,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:08:32,768 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) [2023-02-18 04:08:32,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:32,947 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2023-02-18 04:08:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 04:08:32,948 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 [2023-02-18 04:08:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:32,948 INFO L225 Difference]: With dead ends: 58 [2023-02-18 04:08:32,948 INFO L226 Difference]: Without dead ends: 50 [2023-02-18 04:08:32,949 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 [2023-02-18 04:08:32,949 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:32,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 96 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:08:32,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-18 04:08:32,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2023-02-18 04:08:32,956 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) [2023-02-18 04:08:32,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2023-02-18 04:08:32,957 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 18 [2023-02-18 04:08:32,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:32,957 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2023-02-18 04:08:32,957 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) [2023-02-18 04:08:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2023-02-18 04:08:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 04:08:32,958 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:32,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:32,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:33,161 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 [2023-02-18 04:08:33,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:33,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:33,162 INFO L85 PathProgramCache]: Analyzing trace with hash -68016377, now seen corresponding path program 1 times [2023-02-18 04:08:33,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:33,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121146883] [2023-02-18 04:08:33,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:33,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:33,171 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:33,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865239751] [2023-02-18 04:08:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:33,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:33,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:33,178 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) [2023-02-18 04:08:33,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 04:08:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:33,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-18 04:08:33,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:08:33,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:08:33,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:33,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121146883] [2023-02-18 04:08:33,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:33,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865239751] [2023-02-18 04:08:33,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865239751] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:08:33,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:08:33,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-02-18 04:08:33,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53762727] [2023-02-18 04:08:33,382 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:33,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 04:08:33,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 04:08:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-18 04:08:33,385 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) [2023-02-18 04:08:33,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:33,472 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2023-02-18 04:08:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 04:08:33,473 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 [2023-02-18 04:08:33,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:33,473 INFO L225 Difference]: With dead ends: 60 [2023-02-18 04:08:33,473 INFO L226 Difference]: Without dead ends: 52 [2023-02-18 04:08:33,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-02-18 04:08:33,475 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:33,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 83 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:08:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-18 04:08:33,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2023-02-18 04:08:33,483 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) [2023-02-18 04:08:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2023-02-18 04:08:33,484 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 18 [2023-02-18 04:08:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:33,484 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2023-02-18 04:08:33,484 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) [2023-02-18 04:08:33,484 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2023-02-18 04:08:33,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 04:08:33,485 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:33,485 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:33,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:33,692 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 [2023-02-18 04:08:33,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:33,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:33,692 INFO L85 PathProgramCache]: Analyzing trace with hash 156635680, now seen corresponding path program 1 times [2023-02-18 04:08:33,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:33,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685659222] [2023-02-18 04:08:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:33,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:33,699 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:33,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424311641] [2023-02-18 04:08:33,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:33,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:33,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:33,701 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) [2023-02-18 04:08:33,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 04:08:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:33,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 04:08:33,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:08:33,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:33,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685659222] [2023-02-18 04:08:33,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:33,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424311641] [2023-02-18 04:08:33,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424311641] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:08:33,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 04:08:33,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-02-18 04:08:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424698843] [2023-02-18 04:08:33,980 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:33,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 04:08:33,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:33,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 04:08:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-02-18 04:08:33,981 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) [2023-02-18 04:08:34,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:34,110 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2023-02-18 04:08:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 04:08:34,111 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 [2023-02-18 04:08:34,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:34,113 INFO L225 Difference]: With dead ends: 51 [2023-02-18 04:08:34,113 INFO L226 Difference]: Without dead ends: 45 [2023-02-18 04:08:34,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-02-18 04:08:34,115 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:34,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 78 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:08:34,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-18 04:08:34,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-02-18 04:08:34,131 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) [2023-02-18 04:08:34,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-02-18 04:08:34,133 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 29 [2023-02-18 04:08:34,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:34,134 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-02-18 04:08:34,134 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) [2023-02-18 04:08:34,134 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-02-18 04:08:34,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 04:08:34,135 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:34,137 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:34,153 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-18 04:08:34,345 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 [2023-02-18 04:08:34,345 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:34,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:34,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1793229318, now seen corresponding path program 2 times [2023-02-18 04:08:34,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:34,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189393231] [2023-02-18 04:08:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:34,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:34,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:34,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89500279] [2023-02-18 04:08:34,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:08:34,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:34,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:34,354 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) [2023-02-18 04:08:34,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 04:08:34,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:08:34,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:08:34,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 04:08:34,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 04:08:34,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 04:08:34,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:34,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189393231] [2023-02-18 04:08:34,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:34,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89500279] [2023-02-18 04:08:34,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89500279] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:08:34,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:08:34,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2023-02-18 04:08:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836620746] [2023-02-18 04:08:34,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:34,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 04:08:34,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:34,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 04:08:34,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-02-18 04:08:34,523 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 04:08:34,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:34,764 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2023-02-18 04:08:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 04:08:34,764 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 37 [2023-02-18 04:08:34,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:34,765 INFO L225 Difference]: With dead ends: 62 [2023-02-18 04:08:34,765 INFO L226 Difference]: Without dead ends: 54 [2023-02-18 04:08:34,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2023-02-18 04:08:34,766 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 49 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:34,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 169 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:08:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-18 04:08:34,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-02-18 04:08:34,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.0810810810810811) internal successors, (40), 37 states have internal predecessors, (40), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 04:08:34,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2023-02-18 04:08:34,781 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 37 [2023-02-18 04:08:34,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:34,781 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2023-02-18 04:08:34,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 8 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 04:08:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2023-02-18 04:08:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 04:08:34,783 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:34,784 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:34,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:34,988 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 [2023-02-18 04:08:34,989 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:34,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1854611729, now seen corresponding path program 1 times [2023-02-18 04:08:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:34,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476724787] [2023-02-18 04:08:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:34,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:34,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:35,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [835747557] [2023-02-18 04:08:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:35,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:35,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:35,005 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) [2023-02-18 04:08:35,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 04:08:35,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:35,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 04:08:35,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:35,087 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 24 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:08:35,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 04:08:35,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:35,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476724787] [2023-02-18 04:08:35,126 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:35,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835747557] [2023-02-18 04:08:35,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835747557] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:08:35,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:08:35,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-18 04:08:35,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666423559] [2023-02-18 04:08:35,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:35,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 04:08:35,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 04:08:35,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-18 04:08:35,130 INFO L87 Difference]: Start difference. First operand 50 states and 55 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) [2023-02-18 04:08:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:35,274 INFO L93 Difference]: Finished difference Result 126 states and 137 transitions. [2023-02-18 04:08:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 04:08:35,274 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 [2023-02-18 04:08:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:35,277 INFO L225 Difference]: With dead ends: 126 [2023-02-18 04:08:35,277 INFO L226 Difference]: Without dead ends: 116 [2023-02-18 04:08:35,278 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 [2023-02-18 04:08:35,279 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 83 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:35,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 128 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:08:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-18 04:08:35,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 96. [2023-02-18 04:08:35,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 69 states have (on average 1.0869565217391304) internal successors, (75), 73 states have internal predecessors, (75), 16 states have call successors, (16), 11 states have call predecessors, (16), 10 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-18 04:08:35,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2023-02-18 04:08:35,306 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 47 [2023-02-18 04:08:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:35,307 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2023-02-18 04:08:35,307 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) [2023-02-18 04:08:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2023-02-18 04:08:35,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-18 04:08:35,308 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:35,308 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:35,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:35,515 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 [2023-02-18 04:08:35,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:35,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:35,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1021371784, now seen corresponding path program 3 times [2023-02-18 04:08:35,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:35,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279398167] [2023-02-18 04:08:35,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:35,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:35,524 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:35,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921612241] [2023-02-18 04:08:35,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:08:35,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:35,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:35,525 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) [2023-02-18 04:08:35,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 04:08:35,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-18 04:08:35,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:08:35,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 04:08:35,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 19 proven. 73 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-18 04:08:36,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:36,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:36,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279398167] [2023-02-18 04:08:36,107 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:36,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921612241] [2023-02-18 04:08:36,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921612241] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:08:36,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 04:08:36,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-02-18 04:08:36,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972969450] [2023-02-18 04:08:36,107 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:36,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 04:08:36,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:36,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 04:08:36,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-02-18 04:08:36,108 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 04:08:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:36,307 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2023-02-18 04:08:36,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 04:08:36,308 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 61 [2023-02-18 04:08:36,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:36,309 INFO L225 Difference]: With dead ends: 101 [2023-02-18 04:08:36,309 INFO L226 Difference]: Without dead ends: 95 [2023-02-18 04:08:36,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-18 04:08:36,309 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 7 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:36,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 197 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:08:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-18 04:08:36,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-02-18 04:08:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.0724637681159421) internal successors, (74), 72 states have internal predecessors, (74), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-18 04:08:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2023-02-18 04:08:36,325 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 61 [2023-02-18 04:08:36,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:36,325 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2023-02-18 04:08:36,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 7 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 04:08:36,325 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2023-02-18 04:08:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-18 04:08:36,326 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:36,326 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:36,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:36,531 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 [2023-02-18 04:08:36,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:36,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:36,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1106405730, now seen corresponding path program 4 times [2023-02-18 04:08:36,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:36,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734364269] [2023-02-18 04:08:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:36,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:36,539 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:36,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430380482] [2023-02-18 04:08:36,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 04:08:36,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:36,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:36,540 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) [2023-02-18 04:08:36,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 04:08:36,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 04:08:36,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:08:36,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-18 04:08:36,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:36,636 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 16 proven. 84 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-02-18 04:08:36,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:36,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734364269] [2023-02-18 04:08:36,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:36,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430380482] [2023-02-18 04:08:36,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430380482] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:08:36,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 04:08:36,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-18 04:08:36,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560802704] [2023-02-18 04:08:36,767 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:36,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 04:08:36,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 04:08:36,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-02-18 04:08:36,768 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 04:08:36,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:36,924 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2023-02-18 04:08:36,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 04:08:36,924 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 69 [2023-02-18 04:08:36,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:36,925 INFO L225 Difference]: With dead ends: 100 [2023-02-18 04:08:36,925 INFO L226 Difference]: Without dead ends: 94 [2023-02-18 04:08:36,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-02-18 04:08:36,926 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 2 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:36,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 285 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:08:36,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-18 04:08:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-02-18 04:08:36,936 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) [2023-02-18 04:08:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 100 transitions. [2023-02-18 04:08:36,937 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 100 transitions. Word has length 69 [2023-02-18 04:08:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:36,937 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 100 transitions. [2023-02-18 04:08:36,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 8 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 04:08:36,937 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 100 transitions. [2023-02-18 04:08:36,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-02-18 04:08:36,938 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:36,938 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:36,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:37,142 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 [2023-02-18 04:08:37,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:37,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:37,143 INFO L85 PathProgramCache]: Analyzing trace with hash -317230276, now seen corresponding path program 5 times [2023-02-18 04:08:37,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:37,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026174001] [2023-02-18 04:08:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:37,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:37,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:37,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1689406690] [2023-02-18 04:08:37,159 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 04:08:37,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:37,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:37,160 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) [2023-02-18 04:08:37,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 04:08:37,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-02-18 04:08:37,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:08:37,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-18 04:08:37,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 274 backedges. 23 proven. 131 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-02-18 04:08:37,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:37,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026174001] [2023-02-18 04:08:37,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:37,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689406690] [2023-02-18 04:08:37,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689406690] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:08:37,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 04:08:37,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-02-18 04:08:37,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798199670] [2023-02-18 04:08:37,865 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:37,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 04:08:37,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:37,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 04:08:37,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-02-18 04:08:37,866 INFO L87 Difference]: Start difference. First operand 94 states and 100 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 04:08:38,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:38,097 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2023-02-18 04:08:38,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 04:08:38,098 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 77 [2023-02-18 04:08:38,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:38,098 INFO L225 Difference]: With dead ends: 99 [2023-02-18 04:08:38,098 INFO L226 Difference]: Without dead ends: 93 [2023-02-18 04:08:38,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-02-18 04:08:38,099 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 6 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:38,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 305 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:08:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-18 04:08:38,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-02-18 04:08:38,108 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) [2023-02-18 04:08:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2023-02-18 04:08:38,108 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 77 [2023-02-18 04:08:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:38,109 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2023-02-18 04:08:38,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 04:08:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2023-02-18 04:08:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-02-18 04:08:38,110 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:38,110 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:38,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:38,315 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 [2023-02-18 04:08:38,315 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:38,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:38,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1298793238, now seen corresponding path program 6 times [2023-02-18 04:08:38,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:38,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899235906] [2023-02-18 04:08:38,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:38,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:38,323 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:38,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789867475] [2023-02-18 04:08:38,323 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 04:08:38,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:38,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:38,324 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) [2023-02-18 04:08:38,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 04:08:38,601 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-18 04:08:38,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:08:38,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-18 04:08:38,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 20 proven. 144 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-02-18 04:08:38,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 20 proven. 144 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-02-18 04:08:38,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:38,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899235906] [2023-02-18 04:08:38,955 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:38,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789867475] [2023-02-18 04:08:38,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789867475] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:08:38,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:08:38,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2023-02-18 04:08:38,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431890631] [2023-02-18 04:08:38,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:38,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 04:08:38,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:38,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 04:08:38,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2023-02-18 04:08:38,957 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 28 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 states have internal predecessors, (69), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-18 04:08:39,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:39,918 INFO L93 Difference]: Finished difference Result 146 states and 181 transitions. [2023-02-18 04:08:39,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 04:08:39,918 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 states have internal predecessors, (69), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 85 [2023-02-18 04:08:39,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:39,919 INFO L225 Difference]: With dead ends: 146 [2023-02-18 04:08:39,919 INFO L226 Difference]: Without dead ends: 138 [2023-02-18 04:08:39,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 142 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=533, Invalid=1917, Unknown=0, NotChecked=0, Total=2450 [2023-02-18 04:08:39,920 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 187 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:39,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 456 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 04:08:39,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-02-18 04:08:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 122. [2023-02-18 04:08:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 91 states have (on average 1.098901098901099) internal successors, (100), 91 states have internal predecessors, (100), 20 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-18 04:08:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2023-02-18 04:08:39,937 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 85 [2023-02-18 04:08:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:39,937 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2023-02-18 04:08:39,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.6538461538461537) internal successors, (69), 26 states have internal predecessors, (69), 20 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-18 04:08:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2023-02-18 04:08:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-02-18 04:08:39,938 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:39,938 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:39,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:40,143 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 [2023-02-18 04:08:40,143 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1956819211, now seen corresponding path program 2 times [2023-02-18 04:08:40,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:40,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642099895] [2023-02-18 04:08:40,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:40,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:40,151 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:40,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919511866] [2023-02-18 04:08:40,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:08:40,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:40,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:40,152 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) [2023-02-18 04:08:40,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 04:08:40,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:08:40,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:08:40,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 04:08:40,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 60 proven. 380 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:08:40,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:08:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 22 proven. 200 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-18 04:08:40,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:08:40,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642099895] [2023-02-18 04:08:40,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:08:40,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919511866] [2023-02-18 04:08:40,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919511866] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:08:40,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:08:40,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-02-18 04:08:40,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806810763] [2023-02-18 04:08:40,388 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:08:40,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-18 04:08:40,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:08:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-18 04:08:40,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2023-02-18 04:08:40,390 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand has 26 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 21 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2023-02-18 04:08:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:08:40,727 INFO L93 Difference]: Finished difference Result 222 states and 239 transitions. [2023-02-18 04:08:40,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-02-18 04:08:40,727 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 21 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) Word has length 95 [2023-02-18 04:08:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:08:40,728 INFO L225 Difference]: With dead ends: 222 [2023-02-18 04:08:40,728 INFO L226 Difference]: Without dead ends: 212 [2023-02-18 04:08:40,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=796, Invalid=1366, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 04:08:40,730 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 110 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:08:40,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 209 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:08:40,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-02-18 04:08:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 192. [2023-02-18 04:08:40,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 141 states have (on average 1.0425531914893618) internal successors, (147), 145 states have internal predecessors, (147), 28 states have call successors, (28), 23 states have call predecessors, (28), 22 states have return successors, (27), 23 states have call predecessors, (27), 27 states have call successors, (27) [2023-02-18 04:08:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 202 transitions. [2023-02-18 04:08:40,752 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 202 transitions. Word has length 95 [2023-02-18 04:08:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:08:40,753 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 202 transitions. [2023-02-18 04:08:40,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.230769230769231) internal successors, (110), 26 states have internal predecessors, (110), 21 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2023-02-18 04:08:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 202 transitions. [2023-02-18 04:08:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-02-18 04:08:40,754 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:08:40,754 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:08:40,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-18 04:08:40,959 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 [2023-02-18 04:08:40,959 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:08:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:08:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1626103872, now seen corresponding path program 7 times [2023-02-18 04:08:40,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:08:40,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493010231] [2023-02-18 04:08:40,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:08:40,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:08:40,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:08:40,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564378483] [2023-02-18 04:08:40,968 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 04:08:40,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:08:40,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:08:40,969 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:08:40,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 04:08:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:08:42,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 92 conjunts are in the unsatisfiable core [2023-02-18 04:08:42,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:08:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1334 backedges. 132 proven. 620 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-02-18 04:08:42,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:09:49,686 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5)) (.cse1 (+ |c_ULTIMATE.start_main_~c~0#1| 1))) (or (not (= 0 (mod (+ .cse0 (* |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| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (< (+ 1 .cse1) |c_ULTIMATE.start_main_~k~0#1|) (let ((.cse2 (+ 1 (+ |c_ULTIMATE.start_main_~y~0#1| 1)))) (= (* .cse2 |c_ULTIMATE.start_main_~k~0#1|) (* .cse2 .cse2))) (let ((.cse7 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10)) (.cse3 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse4 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse5 (* |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|)) (.cse6 (* |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|)) (.cse8 (* |c_ULTIMATE.start_main_~y~0#1| 5))) (< (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 10)) (div (+ .cse3 (* .cse4 719) (* .cse5 185) (* .cse6 30)) 12) .cse7 (* (- 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|) .cse8 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| (- 50)) 1) (+ .cse0 .cse6 .cse7 (div (+ .cse3 (- .cse4) (* 5 .cse5) (* .cse6 6)) 12) .cse8 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 10) 1))) (not (< .cse1 |c_ULTIMATE.start_main_~k~0#1|)))) is different from false [2023-02-18 04:11:30,490 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse3 (+ 1 .cse4))) (let ((.cse2 (+ .cse3 1))) (let ((.cse10 (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1)) (.cse0 (+ .cse2 1))) (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (let ((.cse1 (* .cse0 .cse0 .cse0 10)) (.cse9 (* .cse0 5)) (.cse8 (* |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|)) (.cse5 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse7 (* |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|)) (.cse6 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (< (+ (* (- 1) .cse0 .cse0 .cse0 .cse0 .cse0) (* .cse0 .cse0 (- 50)) .cse1 (+ (* .cse2 .cse2 .cse2 90) (+ 214 (* .cse3 .cse3 .cse3 160) (* .cse3 500) (+ (* 250 .cse4 .cse4 .cse4) (* 1025 .cse4) 455 (+ 831 (* |c_ULTIMATE.start_main_~y~0#1| 1830) (div (+ .cse5 (* .cse6 15119) (* .cse7 78) (* 1265 .cse8)) 12) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 360)))) (* .cse2 195) 78) (* .cse0 .cse0 .cse0 .cse0 (- 10)) .cse9 1) (+ (* .cse0 .cse0 .cse0 .cse0 5) .cse1 (* .cse0 .cse0 .cse0 .cse0 .cse0) (* .cse0 .cse0 10) .cse9 1 (+ (* 5 .cse2) (* .cse2 .cse2 .cse2 10) (+ (+ (+ (div (+ (* .cse8 605) .cse5 (* .cse7 54) (* 4799 .cse6)) 12) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 160) 214 (* |c_ULTIMATE.start_main_~y~0#1| 500)) (* 90 .cse4 .cse4 .cse4) 78 (* 195 .cse4)) (* .cse3 .cse3 .cse3 40) (* .cse3 50) 17) 1)))) (< (+ .cse10 1) |c_ULTIMATE.start_main_~k~0#1|) (not (< .cse10 |c_ULTIMATE.start_main_~k~0#1|)) (let ((.cse11 (+ (+ .cse0 1) 1))) (= (* |c_ULTIMATE.start_main_~k~0#1| .cse11) (* .cse11 .cse11)))))))) is different from false [2023-02-18 04:12:28,780 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse8 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse7 (+ 1 .cse8))) (let ((.cse6 (+ .cse7 1))) (let ((.cse13 (+ .cse6 1))) (let ((.cse14 (+ .cse13 1))) (let ((.cse5 (+ .cse14 1))) (let ((.cse0 (+ (+ (+ (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1) 1) 1) 1)) (.cse2 (+ 1 .cse5))) (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (not (< .cse0 |c_ULTIMATE.start_main_~k~0#1|)) (< (+ .cse0 1) |c_ULTIMATE.start_main_~k~0#1|) (let ((.cse1 (+ (+ .cse2 1) 1))) (= (* .cse1 |c_ULTIMATE.start_main_~k~0#1|) (* .cse1 .cse1))) (let ((.cse9 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse12 (* |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|)) (.cse11 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse10 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse3 (* .cse2 .cse2 .cse2 10)) (.cse4 (* .cse2 5))) (< (+ (* .cse2 .cse2 (- 50)) .cse3 (* .cse2 .cse2 .cse2 .cse2 (- 10)) .cse4 (* (- 1) .cse2 .cse2 .cse2 .cse2 .cse2) (+ (* 195 .cse5) (+ 214 (+ (+ 831 (* .cse6 1830) (* .cse6 .cse6 .cse6 360) (+ 1372 (* .cse7 .cse7 .cse7 490) (+ (* 640 .cse8 .cse8 .cse8) 2108 (* 4520 .cse8) (+ 3069 (div (+ .cse9 (* .cse10 114) (* .cse11 48599) (* 2705 .cse12)) 12) (* |c_ULTIMATE.start_main_~y~0#1| 6525) (* 810 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (* .cse7 2975))) 455 (* 250 .cse13 .cse13 .cse13) (* .cse13 1025)) (* 160 .cse14 .cse14 .cse14) (* 500 .cse14)) 78 (* 90 .cse5 .cse5 .cse5)) 1) (+ (+ (* 5 .cse5) (* 10 .cse5 .cse5 .cse5) 1 (+ (* 40 .cse14 .cse14 .cse14) (* .cse14 50) (+ (* .cse13 .cse13 .cse13 90) (+ (+ 455 (* .cse7 1025) (+ 831 (* 360 .cse8 .cse8 .cse8) (* 1830 .cse8) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 490) (div (+ .cse9 (* .cse12 1685) (* 23519 .cse11) (* .cse10 90)) 12) 1372 (* |c_ULTIMATE.start_main_~y~0#1| 2975))) (* .cse7 .cse7 .cse7 250)) (* 160 .cse6 .cse6 .cse6) 214 (* .cse6 500)) 78 (* .cse13 195)) 17)) (* .cse2 .cse2 10) .cse3 (* .cse2 .cse2 .cse2 .cse2 .cse2) (* .cse2 .cse2 .cse2 .cse2 5) .cse4 1))))))))))) is different from false [2023-02-18 04:12:30,834 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse8 (+ 1 .cse3))) (let ((.cse9 (+ .cse8 1))) (let ((.cse10 (+ .cse9 1))) (let ((.cse2 (+ .cse10 1))) (let ((.cse1 (+ .cse2 1))) (let ((.cse11 (+ 1 .cse1))) (let ((.cse0 (+ (+ (+ (+ (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1) 1) 1) 1) 1)) (.cse12 (+ .cse11 1))) (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (not (< .cse0 |c_ULTIMATE.start_main_~k~0#1|)) (let ((.cse13 (* 5 .cse12)) (.cse4 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse7 (* |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|)) (.cse5 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse6 (* |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|)) (.cse14 (* .cse12 .cse12 .cse12 10))) (< (+ (+ (+ (* 500 .cse1) 214 (+ (* .cse2 1025) 455 (* 250 .cse2 .cse2 .cse2) (+ 831 (+ (+ (+ (* 810 .cse3 .cse3 .cse3) 3069 (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 1000) 4285 (* |c_ULTIMATE.start_main_~y~0#1| 9050) (div (+ .cse4 (* .cse5 65999) (* .cse6 3305) (* .cse7 126)) 12)) (* 6525 .cse3)) (* .cse8 .cse8 .cse8 640) 2108 (* .cse8 4520)) 1372 (* .cse9 .cse9 .cse9 490) (* .cse9 2975)) (* .cse10 .cse10 .cse10 360) (* .cse10 1830))) (* 160 .cse1 .cse1 .cse1)) (* .cse11 .cse11 .cse11 90) (* .cse11 195) 78) (* .cse12 .cse12 (- 50)) (* (- 1) .cse12 .cse12 .cse12 .cse12 .cse12) .cse13 (* .cse12 .cse12 .cse12 .cse12 (- 10)) .cse14 1) (+ .cse13 (* .cse12 .cse12 .cse12 .cse12 .cse12) (* 5 .cse12 .cse12 .cse12 .cse12) (* .cse12 .cse12 10) (+ (* .cse11 .cse11 .cse11 10) (* .cse11 5) (+ (* 50 .cse1) (* 40 .cse1 .cse1 .cse1) 17 (+ (* 90 .cse2 .cse2 .cse2) (* 195 .cse2) 78 (+ (* 160 .cse10 .cse10 .cse10) (* .cse10 500) 214 (+ (+ 831 (* .cse8 1830) (+ (+ (div (+ .cse4 (* .cse7 102) (* 34559 .cse5) (* .cse6 2165)) 12) 2108 (* |c_ULTIMATE.start_main_~y~0#1| 4520) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 640)) (* 2975 .cse3) 1372 (* 490 .cse3 .cse3 .cse3)) (* .cse8 .cse8 .cse8 360)) (* .cse9 1025) 455 (* 250 .cse9 .cse9 .cse9))))) 1) .cse14 1))) (< (+ .cse0 1) |c_ULTIMATE.start_main_~k~0#1|) (let ((.cse15 (+ (+ .cse12 1) 1))) (= (* .cse15 |c_ULTIMATE.start_main_~k~0#1|) (* .cse15 .cse15)))))))))))) is different from false [2023-02-18 04:12:32,898 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse10 (+ 1 .cse11))) (let ((.cse9 (+ .cse10 1))) (let ((.cse8 (+ .cse9 1))) (let ((.cse7 (+ .cse8 1))) (let ((.cse6 (+ .cse7 1))) (let ((.cse5 (+ 1 .cse6))) (let ((.cse4 (+ .cse5 1))) (let ((.cse0 (+ (+ (+ (+ (+ (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1) 1) 1) 1) 1) 1)) (.cse2 (+ .cse4 1))) (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (not (< .cse0 |c_ULTIMATE.start_main_~k~0#1|)) (let ((.cse1 (+ (+ .cse2 1) 1))) (= (* .cse1 |c_ULTIMATE.start_main_~k~0#1|) (* .cse1 .cse1))) (< (+ .cse0 1) |c_ULTIMATE.start_main_~k~0#1|) (let ((.cse3 (* .cse2 5)) (.cse16 (* .cse2 .cse2 .cse2 10)) (.cse12 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse15 (* |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|)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse14 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (< (+ (* (- 1) .cse2 .cse2 .cse2 .cse2 .cse2) (* .cse2 .cse2 .cse2 .cse2 (- 10)) .cse3 (+ (* .cse4 .cse4 .cse4 90) 78 (* .cse4 195) (+ (* .cse5 .cse5 .cse5 160) 214 (+ (* 250 .cse6 .cse6 .cse6) 455 (* 1025 .cse6) (+ 831 (* 1830 .cse7) (* 360 .cse7 .cse7 .cse7) (+ 1372 (* .cse8 .cse8 .cse8 490) (* .cse8 2975) (+ 2108 (* .cse9 .cse9 .cse9 640) (+ (* .cse10 6525) 3069 (* 810 .cse10 .cse10 .cse10) (+ (* 9050 .cse11) (+ (div (+ .cse12 (* .cse13 87119) (* 3965 .cse14) (* .cse15 138)) 12) (* 1210 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 5786 (* 12155 |c_ULTIMATE.start_main_~y~0#1|)) (* 1000 .cse11 .cse11 .cse11) 4285)) (* 4520 .cse9))))) (* .cse5 500))) .cse16 (* .cse2 .cse2 (- 50)) 1) (+ (* .cse2 .cse2 .cse2 .cse2 .cse2) .cse3 .cse16 (* .cse2 .cse2 10) (* .cse2 .cse2 .cse2 .cse2 5) (+ (* 5 .cse4) (+ (* .cse5 50) 17 (* .cse5 .cse5 .cse5 40) (+ (* 195 .cse6) (+ 214 (+ (+ 831 (* .cse9 1830) (* .cse9 .cse9 .cse9 360) (+ 1372 (* .cse10 .cse10 .cse10 490) (+ (* 640 .cse11 .cse11 .cse11) 2108 (* 4520 .cse11) (+ 3069 (div (+ .cse12 (* .cse15 114) (* .cse13 48599) (* 2705 .cse14)) 12) (* |c_ULTIMATE.start_main_~y~0#1| 6525) (* 810 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (* .cse10 2975))) 455 (* 250 .cse8 .cse8 .cse8) (* .cse8 1025)) (* 160 .cse7 .cse7 .cse7) (* 500 .cse7)) 78 (* 90 .cse6 .cse6 .cse6))) (* .cse4 .cse4 .cse4 10) 1) 1))))))))))))) is different from false [2023-02-18 04:12:34,956 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse11 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse12 (+ 1 .cse11))) (let ((.cse6 (+ .cse12 1))) (let ((.cse13 (+ .cse6 1))) (let ((.cse14 (+ .cse13 1))) (let ((.cse5 (+ .cse14 1))) (let ((.cse15 (+ 1 .cse5))) (let ((.cse4 (+ .cse15 1))) (let ((.cse3 (+ .cse4 1))) (let ((.cse0 (+ (+ (+ (+ (+ (+ (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1) 1) 1) 1) 1) 1) 1)) (.cse2 (+ .cse3 1))) (or (not (< .cse0 |c_ULTIMATE.start_main_~k~0#1|)) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (< (+ .cse0 1) |c_ULTIMATE.start_main_~k~0#1|) (let ((.cse1 (+ (+ .cse2 1) 1))) (= (* .cse1 |c_ULTIMATE.start_main_~k~0#1|) (* .cse1 .cse1))) (let ((.cse16 (* .cse2 .cse2 .cse2 10)) (.cse7 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse10 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse8 (* |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|)) (.cse9 (* |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|)) (.cse17 (* .cse2 5))) (< (+ (+ (* .cse3 195) (+ (* 160 .cse4 .cse4 .cse4) (+ (+ 831 (* 360 .cse5 .cse5 .cse5) (* 1830 .cse5) (+ (+ 2108 (+ 3069 (* 810 .cse6 .cse6 .cse6) (+ (+ (+ (* |c_ULTIMATE.start_main_~y~0#1| 15900) (div (+ .cse7 (* 4685 .cse8) (* .cse9 150) (* .cse10 112319)) 12) 7602 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 1440)) (* 1210 .cse11 .cse11 .cse11) 5786 (* 12155 .cse11)) (* .cse12 .cse12 .cse12 1000) (* .cse12 9050) 4285) (* .cse6 6525)) (* .cse13 .cse13 .cse13 640) (* .cse13 4520)) 1372 (* 2975 .cse14) (* .cse14 .cse14 .cse14 490))) (* .cse15 1025) 455 (* .cse15 .cse15 .cse15 250)) (* .cse4 500) 214) 78 (* .cse3 .cse3 .cse3 90)) .cse16 (* .cse2 .cse2 .cse2 .cse2 (- 10)) (* .cse2 .cse2 (- 50)) .cse17 (* (- 1) .cse2 .cse2 .cse2 .cse2 .cse2) 1) (+ (* .cse2 .cse2 .cse2 .cse2 5) (* .cse2 .cse2 10) .cse16 (+ (* .cse3 5) (* .cse3 .cse3 .cse3 10) (+ (+ (+ (* 500 .cse5) 214 (+ (* .cse14 1025) 455 (* 250 .cse14 .cse14 .cse14) (+ 831 (+ (+ (+ (* 810 .cse11 .cse11 .cse11) 3069 (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 1000) 4285 (* |c_ULTIMATE.start_main_~y~0#1| 9050) (div (+ .cse7 (* .cse10 65999) (* .cse8 3305) (* .cse9 126)) 12)) (* 6525 .cse11)) (* .cse12 .cse12 .cse12 640) 2108 (* .cse12 4520)) 1372 (* .cse6 .cse6 .cse6 490) (* .cse6 2975)) (* .cse13 .cse13 .cse13 360) (* .cse13 1830))) (* 160 .cse5 .cse5 .cse5)) (* .cse15 .cse15 .cse15 90) (* .cse15 195) 78) (* .cse4 50) 17 (* 40 .cse4 .cse4 .cse4)) 1) .cse17 1 (* .cse2 .cse2 .cse2 .cse2 .cse2))))))))))))))) is different from false [2023-02-18 04:12:37,016 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse12 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse7 (+ 1 .cse12))) (let ((.cse6 (+ .cse7 1))) (let ((.cse5 (+ .cse6 1))) (let ((.cse13 (+ .cse5 1))) (let ((.cse4 (+ .cse13 1))) (let ((.cse3 (+ 1 .cse4))) (let ((.cse2 (+ .cse3 1))) (let ((.cse14 (+ .cse2 1))) (let ((.cse15 (+ .cse14 1))) (let ((.cse1 (+ .cse15 1)) (.cse18 (+ (+ (+ (+ (+ (+ (+ (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1) 1) 1) 1) 1) 1) 1) 1))) (or (let ((.cse0 (+ (+ .cse1 1) 1))) (= (* .cse0 .cse0) (* .cse0 |c_ULTIMATE.start_main_~k~0#1|))) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (let ((.cse16 (* .cse1 .cse1 .cse1 10)) (.cse8 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse9 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse11 (* |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|)) (.cse10 (* |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|)) (.cse17 (* 5 .cse1))) (< (+ (+ (+ (+ (* .cse2 1025) 455 (* 250 .cse2 .cse2 .cse2) (+ 831 (* .cse3 .cse3 .cse3 360) (* .cse3 1830) (+ (* 2975 .cse4) 1372 (* 490 .cse4 .cse4 .cse4) (+ 2108 (+ 3069 (* 810 .cse5 .cse5 .cse5) (+ (* 9050 .cse6) (+ (* .cse7 12155) (* .cse7 .cse7 .cse7 1210) (+ (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 1690) 9763 (div (+ .cse8 (* 141959 .cse9) (* .cse10 162) (* .cse11 5465)) 12) (* |c_ULTIMATE.start_main_~y~0#1| 20345)) 7602 (* 1440 .cse12 .cse12 .cse12) (* 15900 .cse12)) 5786) (* .cse6 .cse6 .cse6 1000) 4285) (* .cse5 6525)) (* 4520 .cse13) (* .cse13 .cse13 .cse13 640))))) 214 (* .cse14 500) (* 160 .cse14 .cse14 .cse14)) (* .cse15 195) (* .cse15 .cse15 .cse15 90) 78) .cse16 (* .cse1 .cse1 (- 50)) (* .cse1 .cse1 .cse1 .cse1 (- 10)) (* (- 1) .cse1 .cse1 .cse1 .cse1 .cse1) .cse17 1) (+ (* .cse1 .cse1 10) .cse16 (* .cse1 .cse1 .cse1 .cse1 .cse1) (+ (+ (* 40 .cse14 .cse14 .cse14) (+ (* .cse2 .cse2 .cse2 90) 78 (* .cse2 195) (+ (* .cse3 .cse3 .cse3 160) 214 (+ (* 250 .cse4 .cse4 .cse4) 455 (* 1025 .cse4) (+ 831 (* 1830 .cse13) (* 360 .cse13 .cse13 .cse13) (+ 1372 (* .cse5 .cse5 .cse5 490) (* .cse5 2975) (+ 2108 (* .cse6 .cse6 .cse6 640) (+ (* .cse7 6525) 3069 (* 810 .cse7 .cse7 .cse7) (+ (* 9050 .cse12) (+ (div (+ .cse8 (* .cse9 87119) (* 3965 .cse11) (* .cse10 138)) 12) (* 1210 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 5786 (* 12155 |c_ULTIMATE.start_main_~y~0#1|)) (* 1000 .cse12 .cse12 .cse12) 4285)) (* 4520 .cse6))))) (* .cse3 500))) (* .cse14 50) 17) (* .cse15 .cse15 .cse15 10) (* .cse15 5) 1) (* 5 .cse1 .cse1 .cse1 .cse1) .cse17 1))) (not (< .cse18 |c_ULTIMATE.start_main_~k~0#1|)) (< (+ .cse18 1) |c_ULTIMATE.start_main_~k~0#1|))))))))))))) is different from false [2023-02-18 04:12:39,084 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse10 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse9 (+ 1 .cse10))) (let ((.cse8 (+ .cse9 1))) (let ((.cse15 (+ .cse8 1))) (let ((.cse7 (+ .cse15 1))) (let ((.cse6 (+ .cse7 1))) (let ((.cse16 (+ 1 .cse6))) (let ((.cse5 (+ .cse16 1))) (let ((.cse4 (+ .cse5 1))) (let ((.cse3 (+ .cse4 1))) (let ((.cse2 (+ .cse3 1))) (let ((.cse17 (+ .cse2 1)) (.cse18 (+ (+ (+ (+ (+ (+ (+ (+ (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1) 1) 1) 1) 1) 1) 1) 1) 1))) (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (let ((.cse0 (* .cse17 5)) (.cse1 (* .cse17 .cse17 .cse17 10)) (.cse11 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse14 (* |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|)) (.cse12 (* |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|)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (< (+ .cse0 .cse1 (+ (* .cse2 195) 78 (* .cse2 .cse2 .cse2 90) (+ 214 (* 160 .cse3 .cse3 .cse3) (+ (* .cse4 1025) (+ 831 (* .cse5 1830) (* .cse5 .cse5 .cse5 360) (+ 1372 (+ (* 4520 .cse6) (+ 3069 (* 6525 .cse7) (* 810 .cse7 .cse7 .cse7) (+ (+ (* 12155 .cse8) (* 1210 .cse8 .cse8 .cse8) (+ (* .cse9 .cse9 .cse9 1440) (+ 9763 (* 1690 .cse10 .cse10 .cse10) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 1960) (* |c_ULTIMATE.start_main_~y~0#1| 25550) 12299 (div (+ .cse11 (* .cse12 174) (* 176399 .cse13) (* .cse14 6305)) 12)) (* 20345 .cse10)) (* .cse9 15900) 7602) 5786) (* 9050 .cse15) (* .cse15 .cse15 .cse15 1000) 4285)) 2108 (* 640 .cse6 .cse6 .cse6)) (* .cse16 .cse16 .cse16 490) (* .cse16 2975))) 455 (* 250 .cse4 .cse4 .cse4)) (* .cse3 500))) (* .cse17 .cse17 .cse17 .cse17 .cse17 (- 1)) (* .cse17 .cse17 (- 50)) (* .cse17 .cse17 .cse17 .cse17 (- 10)) 1) (+ .cse0 (* .cse17 .cse17 10) (* .cse17 .cse17 .cse17 .cse17 .cse17) .cse1 (+ (* .cse2 .cse2 .cse2 10) (+ (+ (* .cse4 195) (+ (* 160 .cse5 .cse5 .cse5) (+ (+ 831 (* 360 .cse6 .cse6 .cse6) (* 1830 .cse6) (+ (+ 2108 (+ 3069 (* 810 .cse8 .cse8 .cse8) (+ (+ (+ (* |c_ULTIMATE.start_main_~y~0#1| 15900) (div (+ .cse11 (* 4685 .cse14) (* .cse12 150) (* .cse13 112319)) 12) 7602 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 1440)) (* 1210 .cse10 .cse10 .cse10) 5786 (* 12155 .cse10)) (* .cse9 .cse9 .cse9 1000) (* .cse9 9050) 4285) (* .cse8 6525)) (* .cse15 .cse15 .cse15 640) (* .cse15 4520)) 1372 (* 2975 .cse7) (* .cse7 .cse7 .cse7 490))) (* .cse16 1025) 455 (* .cse16 .cse16 .cse16 250)) (* .cse5 500) 214) 78 (* .cse4 .cse4 .cse4 90)) (* 40 .cse3 .cse3 .cse3) (* .cse3 50) 17) (* 5 .cse2) 1) (* .cse17 .cse17 .cse17 .cse17 5) 1))) (< (+ .cse18 1) |c_ULTIMATE.start_main_~k~0#1|) (let ((.cse19 (+ (+ .cse17 1) 1))) (= (* .cse19 |c_ULTIMATE.start_main_~k~0#1|) (* .cse19 .cse19))) (not (< .cse18 |c_ULTIMATE.start_main_~k~0#1|))))))))))))))) is different from false [2023-02-18 04:12:41,141 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse12 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse11 (+ 1 .cse12))) (let ((.cse10 (+ .cse11 1))) (let ((.cse17 (+ .cse10 1))) (let ((.cse9 (+ .cse17 1))) (let ((.cse8 (+ .cse9 1))) (let ((.cse18 (+ 1 .cse8))) (let ((.cse19 (+ .cse18 1))) (let ((.cse7 (+ .cse19 1))) (let ((.cse20 (+ .cse7 1))) (let ((.cse6 (+ .cse20 1))) (let ((.cse5 (+ .cse6 1))) (let ((.cse2 (+ (+ (+ (+ (+ (+ (+ (+ (+ (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1) 1) 1) 1) 1) 1) 1) 1) 1) 1)) (.cse1 (+ .cse5 1))) (or (let ((.cse0 (+ (+ .cse1 1) 1))) (= (* .cse0 .cse0) (* |c_ULTIMATE.start_main_~k~0#1| .cse0))) (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (< (+ .cse2 1) |c_ULTIMATE.start_main_~k~0#1|) (not (< .cse2 |c_ULTIMATE.start_main_~k~0#1|)) (let ((.cse3 (* .cse1 .cse1 .cse1 10)) (.cse4 (* .cse1 5)) (.cse13 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse14 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse16 (* |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|)) (.cse15 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (< (+ (* .cse1 .cse1 .cse1 .cse1 (- 10)) (* (- 1) .cse1 .cse1 .cse1 .cse1 .cse1) .cse3 .cse4 (+ (* .cse5 .cse5 .cse5 90) 78 (+ 214 (* 160 .cse6 .cse6 .cse6) (+ (+ 831 (* .cse7 .cse7 .cse7 360) (* .cse7 1830) (+ (+ 2108 (+ 3069 (* 6525 .cse8) (+ (* 9050 .cse9) (+ (+ (* 15900 .cse10) 7602 (+ 9763 (* .cse11 20345) (+ (* 25550 .cse12) (* 1960 .cse12 .cse12 .cse12) 12299 (+ (div (+ .cse13 (* .cse14 215999) (* .cse15 7205) (* .cse16 186)) 12) (* |c_ULTIMATE.start_main_~y~0#1| 31575) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2250) 15240)) (* .cse11 .cse11 .cse11 1690)) (* .cse10 .cse10 .cse10 1440)) (* 1210 .cse17 .cse17 .cse17) 5786 (* 12155 .cse17)) (* 1000 .cse9 .cse9 .cse9) 4285) (* 810 .cse8 .cse8 .cse8)) (* .cse18 .cse18 .cse18 640) (* .cse18 4520)) 1372 (* .cse19 2975) (* .cse19 .cse19 .cse19 490))) (* 250 .cse20 .cse20 .cse20) (* .cse20 1025) 455) (* .cse6 500)) (* .cse5 195)) 1 (* .cse1 .cse1 (- 50))) (+ .cse3 (* .cse1 .cse1 .cse1 .cse1 .cse1) (* .cse1 .cse1 .cse1 .cse1 5) .cse4 (+ (* .cse5 5) (* .cse5 .cse5 .cse5 10) (+ (+ (+ (+ (* .cse19 1025) 455 (* 250 .cse19 .cse19 .cse19) (+ 831 (* .cse18 .cse18 .cse18 360) (* .cse18 1830) (+ (* 2975 .cse8) 1372 (* 490 .cse8 .cse8 .cse8) (+ 2108 (+ 3069 (* 810 .cse17 .cse17 .cse17) (+ (* 9050 .cse10) (+ (* .cse11 12155) (* .cse11 .cse11 .cse11 1210) (+ (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 1690) 9763 (div (+ .cse13 (* 141959 .cse14) (* .cse16 162) (* .cse15 5465)) 12) (* |c_ULTIMATE.start_main_~y~0#1| 20345)) 7602 (* 1440 .cse12 .cse12 .cse12) (* 15900 .cse12)) 5786) (* .cse10 .cse10 .cse10 1000) 4285) (* .cse17 6525)) (* 4520 .cse9) (* .cse9 .cse9 .cse9 640))))) 214 (* .cse7 500) (* 160 .cse7 .cse7 .cse7)) (* .cse20 195) (* .cse20 .cse20 .cse20 90) 78) (* .cse6 50) (* 40 .cse6 .cse6 .cse6) 17) 1) (* .cse1 .cse1 10) 1))))))))))))))))) is different from false [2023-02-18 04:13:07,012 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse12 (+ |c_ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse11 (+ 1 .cse12))) (let ((.cse10 (+ .cse11 1))) (let ((.cse17 (+ .cse10 1))) (let ((.cse9 (+ .cse17 1))) (let ((.cse8 (+ .cse9 1))) (let ((.cse7 (+ 1 .cse8))) (let ((.cse18 (+ .cse7 1))) (let ((.cse6 (+ .cse18 1))) (let ((.cse5 (+ .cse6 1))) (let ((.cse4 (+ .cse5 1))) (let ((.cse3 (+ .cse4 1))) (let ((.cse2 (+ .cse3 1))) (let ((.cse1 (+ .cse2 1))) (let ((.cse0 (+ .cse1 1))) (or (not (= 0 (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 5) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 11) (* |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| 6)) 12))) (let ((.cse19 (* 10 .cse0 .cse0 .cse0)) (.cse13 (* 2 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (.cse16 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (.cse15 (* |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|)) (.cse14 (* |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|)) (.cse20 (* 5 .cse0))) (< (+ (* (- 1) .cse0 .cse0 .cse0 .cse0 .cse0) (+ (* .cse1 195) (* .cse1 .cse1 .cse1 90) 78 (+ (* 160 .cse2 .cse2 .cse2) (+ (* .cse3 .cse3 .cse3 250) 455 (+ 831 (* .cse4 1830) (+ (* .cse5 2975) 1372 (* .cse5 .cse5 .cse5 490) (+ 2108 (* .cse6 4520) (* .cse6 .cse6 .cse6 640) (+ 3069 (+ (* .cse7 .cse7 .cse7 1000) (+ (* 12155 .cse8) (+ 7602 (* 1440 .cse9 .cse9 .cse9) (+ 9763 (+ (* 25550 .cse10) 12299 (+ (* .cse11 31575) (* .cse11 .cse11 .cse11 2250) 15240 (+ (* 38480 .cse12) (* 2560 .cse12 .cse12 .cse12) (+ (* |c_ULTIMATE.start_main_~y~0#1| 46325) 22457 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2890) (div (+ .cse13 (* .cse14 210) (* 9185 .cse15) (* .cse16 312119)) 12)) 18616)) (* 1960 .cse10 .cse10 .cse10)) (* .cse17 .cse17 .cse17 1690) (* .cse17 20345)) (* 15900 .cse9)) (* 1210 .cse8 .cse8 .cse8) 5786) (* .cse7 9050) 4285) (* 810 .cse18 .cse18 .cse18) (* .cse18 6525)))) (* .cse4 .cse4 .cse4 360)) (* .cse3 1025)) 214 (* .cse2 500))) .cse19 (* (- 50) .cse0 .cse0) (* (- 10) .cse0 .cse0 .cse0 .cse0) .cse20 1) (+ (* 5 .cse0 .cse0 .cse0 .cse0) .cse19 (+ (* .cse1 5) (* .cse1 .cse1 .cse1 10) (+ (* .cse2 50) (* 40 .cse2 .cse2 .cse2) (+ (* .cse3 .cse3 .cse3 90) 78 (+ 214 (* 160 .cse4 .cse4 .cse4) (+ (+ 831 (* .cse6 .cse6 .cse6 360) (* .cse6 1830) (+ (+ 2108 (+ 3069 (* 6525 .cse8) (+ (* 9050 .cse9) (+ (+ (* 15900 .cse10) 7602 (+ 9763 (* .cse11 20345) (+ (* 25550 .cse12) (* 1960 .cse12 .cse12 .cse12) 12299 (+ (div (+ .cse13 (* .cse16 215999) (* .cse15 7205) (* .cse14 186)) 12) (* |c_ULTIMATE.start_main_~y~0#1| 31575) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2250) 15240)) (* .cse11 .cse11 .cse11 1690)) (* .cse10 .cse10 .cse10 1440)) (* 1210 .cse17 .cse17 .cse17) 5786 (* 12155 .cse17)) (* 1000 .cse9 .cse9 .cse9) 4285) (* 810 .cse8 .cse8 .cse8)) (* .cse7 .cse7 .cse7 640) (* .cse7 4520)) 1372 (* .cse18 2975) (* .cse18 .cse18 .cse18 490))) (* 250 .cse5 .cse5 .cse5) (* .cse5 1025) 455) (* .cse4 500)) (* .cse3 195)) 17) 1) (* .cse0 .cse0 .cse0 .cse0 .cse0) (* 10 .cse0 .cse0) .cse20 1))) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (let ((.cse21 (+ (+ (+ (+ (+ (+ (+ (+ (+ (+ (+ (+ (+ 1 (+ (+ 1 (+ |c_ULTIMATE.start_main_~c~0#1| 1)) 1)) 1) 1) 1) 1) 1) 1) 1) 1) 1) 1) 1) 1))) (or (not (< .cse21 |ULTIMATE.start_main_~k~0#1|)) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (let ((.cse22 (+ (+ 1 .cse0) 1))) (= (* .cse22 |ULTIMATE.start_main_~k~0#1|) (* .cse22 .cse22))) (< (+ .cse21 1) |ULTIMATE.start_main_~k~0#1|)))))))))))))))))))) is different from false [2023-02-18 04:13:07,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:13:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493010231] [2023-02-18 04:13:07,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:13:07,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564378483] [2023-02-18 04:13:07,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564378483] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:13:07,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 04:13:07,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2023-02-18 04:13:07,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389278371] [2023-02-18 04:13:07,023 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 04:13:07,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-18 04:13:07,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:13:07,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-18 04:13:07,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1300, Unknown=38, NotChecked=850, Total=2450 [2023-02-18 04:13:07,024 INFO L87 Difference]: Start difference. First operand 192 states and 202 transitions. Second operand has 27 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-18 04:13:08,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 04:13:13,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 04:13:16,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 04:13:18,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 04:13:20,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 04:13:23,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 04:13:23,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:13:23,576 INFO L93 Difference]: Finished difference Result 197 states and 206 transitions. [2023-02-18 04:13:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-18 04:13:23,576 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 157 [2023-02-18 04:13:23,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:13:23,577 INFO L225 Difference]: With dead ends: 197 [2023-02-18 04:13:23,577 INFO L226 Difference]: Without dead ends: 191 [2023-02-18 04:13:23,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 267.9s TimeCoverageRelationStatistics Valid=285, Invalid=1522, Unknown=39, NotChecked=910, Total=2756 [2023-02-18 04:13:23,578 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 6 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2023-02-18 04:13:23,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 997 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1485 Invalid, 4 Unknown, 0 Unchecked, 12.4s Time] [2023-02-18 04:13:23,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-02-18 04:13:23,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-02-18 04:13:23,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 141 states have (on average 1.0354609929078014) internal successors, (146), 144 states have internal predecessors, (146), 27 states have call successors, (27), 23 states have call predecessors, (27), 22 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-02-18 04:13:23,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 199 transitions. [2023-02-18 04:13:23,602 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 199 transitions. Word has length 157 [2023-02-18 04:13:23,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:13:23,602 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 199 transitions. [2023-02-18 04:13:23,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.68) internal successors, (67), 24 states have internal predecessors, (67), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-02-18 04:13:23,603 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 199 transitions. [2023-02-18 04:13:23,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-02-18 04:13:23,604 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:13:23,604 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 19, 19, 19, 19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:13:23,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 04:13:23,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:13:23,812 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:13:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:13:23,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2042850202, now seen corresponding path program 8 times [2023-02-18 04:13:23,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:13:23,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985195902] [2023-02-18 04:13:23,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:13:23,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:13:23,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:13:23,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939444766] [2023-02-18 04:13:23,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:13:23,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:13:23,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:13:23,827 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:13:23,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 04:17:22,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:17:22,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:17:22,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 88 conjunts are in the unsatisfiable core [2023-02-18 04:17:22,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:17:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 40 proven. 684 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-02-18 04:17:22,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:17:23,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1484 backedges. 40 proven. 684 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-02-18 04:17:23,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:17:23,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985195902] [2023-02-18 04:17:23,741 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:17:23,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939444766] [2023-02-18 04:17:23,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939444766] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:17:23,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:17:23,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 48 [2023-02-18 04:17:23,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631118630] [2023-02-18 04:17:23,742 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:17:23,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-18 04:17:23,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:17:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-18 04:17:23,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=1811, Unknown=0, NotChecked=0, Total=2256 [2023-02-18 04:17:23,744 INFO L87 Difference]: Start difference. First operand 191 states and 199 transitions. Second operand has 48 states, 46 states have (on average 2.8043478260869565) internal successors, (129), 46 states have internal predecessors, (129), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-02-18 04:17:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:17:29,265 INFO L93 Difference]: Finished difference Result 292 states and 363 transitions. [2023-02-18 04:17:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-18 04:17:29,265 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 2.8043478260869565) internal successors, (129), 46 states have internal predecessors, (129), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Word has length 165 [2023-02-18 04:17:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:17:29,266 INFO L225 Difference]: With dead ends: 292 [2023-02-18 04:17:29,266 INFO L226 Difference]: Without dead ends: 282 [2023-02-18 04:17:29,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1432 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1822, Invalid=6188, Unknown=0, NotChecked=0, Total=8010 [2023-02-18 04:17:29,268 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 540 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-18 04:17:29,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1397 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-18 04:17:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-02-18 04:17:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 250. [2023-02-18 04:17:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 187 states have (on average 1.0909090909090908) internal successors, (204), 187 states have internal predecessors, (204), 40 states have call successors, (40), 23 states have call predecessors, (40), 22 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-02-18 04:17:29,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 283 transitions. [2023-02-18 04:17:29,322 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 283 transitions. Word has length 165 [2023-02-18 04:17:29,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:17:29,322 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 283 transitions. [2023-02-18 04:17:29,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 2.8043478260869565) internal successors, (129), 46 states have internal predecessors, (129), 40 states have call successors, (42), 3 states have call predecessors, (42), 1 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-02-18 04:17:29,322 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 283 transitions. [2023-02-18 04:17:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-02-18 04:17:29,324 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:17:29,324 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:17:29,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-18 04:17:29,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-18 04:17:29,529 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:17:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:17:29,529 INFO L85 PathProgramCache]: Analyzing trace with hash -988750525, now seen corresponding path program 3 times [2023-02-18 04:17:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:17:29,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017292863] [2023-02-18 04:17:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:17:29,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:17:29,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:17:29,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067592701] [2023-02-18 04:17:29,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:17:29,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:17:29,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:17:29,544 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:17:29,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 04:17:50,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-02-18 04:17:50,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:17:50,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-18 04:17:50,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:17:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 132 proven. 1892 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:17:50,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:17:50,873 INFO L134 CoverageAnalysis]: Checked inductivity of 2026 backedges. 46 proven. 968 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-02-18 04:17:50,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:17:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017292863] [2023-02-18 04:17:50,873 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 04:17:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067592701] [2023-02-18 04:17:50,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067592701] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:17:50,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:17:50,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 50 [2023-02-18 04:17:50,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191668011] [2023-02-18 04:17:50,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:17:50,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-18 04:17:50,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:17:50,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-18 04:17:50,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=1317, Unknown=0, NotChecked=0, Total=2450 [2023-02-18 04:17:50,876 INFO L87 Difference]: Start difference. First operand 250 states and 283 transitions. Second operand has 50 states, 50 states have (on average 4.36) internal successors, (218), 50 states have internal predecessors, (218), 45 states have call successors, (47), 24 states have call predecessors, (47), 24 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-02-18 04:17:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:17:52,100 INFO L93 Difference]: Finished difference Result 438 states and 471 transitions. [2023-02-18 04:17:52,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-18 04:17:52,100 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.36) internal successors, (218), 50 states have internal predecessors, (218), 45 states have call successors, (47), 24 states have call predecessors, (47), 24 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) Word has length 191 [2023-02-18 04:17:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:17:52,102 INFO L225 Difference]: With dead ends: 438 [2023-02-18 04:17:52,102 INFO L226 Difference]: Without dead ends: 428 [2023-02-18 04:17:52,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3316, Invalid=5614, Unknown=0, NotChecked=0, Total=8930 [2023-02-18 04:17:52,104 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 290 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 04:17:52,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 370 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 04:17:52,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-02-18 04:17:52,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 388. [2023-02-18 04:17:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 285 states have (on average 1.0350877192982457) internal successors, (295), 293 states have internal predecessors, (295), 56 states have call successors, (56), 47 states have call predecessors, (56), 46 states have return successors, (55), 47 states have call predecessors, (55), 55 states have call successors, (55) [2023-02-18 04:17:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 406 transitions. [2023-02-18 04:17:52,180 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 406 transitions. Word has length 191 [2023-02-18 04:17:52,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:17:52,181 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 406 transitions. [2023-02-18 04:17:52,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.36) internal successors, (218), 50 states have internal predecessors, (218), 45 states have call successors, (47), 24 states have call predecessors, (47), 24 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2023-02-18 04:17:52,181 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 406 transitions. [2023-02-18 04:17:52,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2023-02-18 04:17:52,184 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:17:52,184 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 38, 38, 38, 38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:17:52,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 04:17:52,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-18 04:17:52,394 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:17:52,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:17:52,394 INFO L85 PathProgramCache]: Analyzing trace with hash 212140232, now seen corresponding path program 9 times [2023-02-18 04:17:52,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:17:52,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349577945] [2023-02-18 04:17:52,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:17:52,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:17:52,406 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 04:17:52,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [411690148] [2023-02-18 04:17:52,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:17:52,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:17:52,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:17:52,407 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:17:52,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process