./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.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 68d290aa6e6a124b20d02df1a641bd7e739f143db7416cdcc7b7048aed53c326 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:46:11,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:46:11,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:46:11,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:46:11,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:46:11,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:46:11,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:46:11,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:46:11,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:46:11,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:46:11,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:46:11,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:46:11,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:46:11,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:46:11,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:46:11,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:46:11,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:46:11,355 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:46:11,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:46:11,360 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:46:11,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:46:11,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:46:11,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:46:11,363 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:46:11,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:46:11,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:46:11,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:46:11,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:46:11,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:46:11,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:46:11,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:46:11,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:46:11,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:46:11,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:46:11,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:46:11,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:46:11,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:46:11,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:46:11,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:46:11,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:46:11,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:46:11,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:46:11,399 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:46:11,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:46:11,400 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:46:11,400 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:46:11,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:46:11,401 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:46:11,401 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:46:11,401 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:46:11,401 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:46:11,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:46:11,402 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:46:11,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:46:11,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:46:11,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:46:11,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:46:11,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:46:11,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:46:11,403 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:46:11,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:46:11,403 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:46:11,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:46:11,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:46:11,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:46:11,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:46:11,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:46:11,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:46:11,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:46:11,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:46:11,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:46:11,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:46:11,405 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:46:11,405 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:46:11,405 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:46:11,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:46:11,406 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:46:11,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68d290aa6e6a124b20d02df1a641bd7e739f143db7416cdcc7b7048aed53c326 [2023-02-16 02:46:11,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:46:11,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:46:11,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:46:11,623 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:46:11,623 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:46:11,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2023-02-16 02:46:12,624 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:46:12,770 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:46:12,770 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound2.c [2023-02-16 02:46:12,774 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/305bdbac8/7a063bde59484299bbfcc11651ae3fa0/FLAG11dd303b9 [2023-02-16 02:46:12,796 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/305bdbac8/7a063bde59484299bbfcc11651ae3fa0 [2023-02-16 02:46:12,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:46:12,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:46:12,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:46:12,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:46:12,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:46:12,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:12,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6fc936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12, skipping insertion in model container [2023-02-16 02:46:12,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:12,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:46:12,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:46:12,930 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/ps4-ll_valuebound2.c[458,471] [2023-02-16 02:46:12,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:46:12,951 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:46:12,961 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/ps4-ll_valuebound2.c[458,471] [2023-02-16 02:46:12,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:46:12,982 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:46:12,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12 WrapperNode [2023-02-16 02:46:12,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:46:12,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:46:12,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:46:12,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:46:12,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:12,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,004 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2023-02-16 02:46:13,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:46:13,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:46:13,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:46:13,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:46:13,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,031 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:46:13,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:46:13,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:46:13,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:46:13,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (1/1) ... [2023-02-16 02:46:13,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:46:13,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:46:13,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 02:46:13,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 02:46:13,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:46:13,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:46:13,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:46:13,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:46:13,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:46:13,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:46:13,147 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:46:13,149 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:46:13,240 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:46:13,244 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:46:13,244 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 02:46:13,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:46:13 BoogieIcfgContainer [2023-02-16 02:46:13,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:46:13,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:46:13,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:46:13,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:46:13,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:46:12" (1/3) ... [2023-02-16 02:46:13,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7637b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:46:13, skipping insertion in model container [2023-02-16 02:46:13,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:46:12" (2/3) ... [2023-02-16 02:46:13,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7637b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:46:13, skipping insertion in model container [2023-02-16 02:46:13,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:46:13" (3/3) ... [2023-02-16 02:46:13,252 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound2.c [2023-02-16 02:46:13,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:46:13,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:46:13,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:46:13,300 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;@54964166, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:46:13,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:46:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:46:13,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 02:46:13,307 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:46:13,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:46:13,308 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:46:13,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:46:13,311 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2023-02-16 02:46:13,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:46:13,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407256670] [2023-02-16 02:46:13,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:46:13,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:46:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:46:13,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:46:13,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407256670] [2023-02-16 02:46:13,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 02:46:13,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178626630] [2023-02-16 02:46:13,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:46:13,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:46:13,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:46:13,402 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:46:13,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 02:46:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:46:13,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 02:46:13,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:46:13,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:46:13,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:46:13,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178626630] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:46:13,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:46:13,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:46:13,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241812261] [2023-02-16 02:46:13,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:46:13,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:46:13,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:46:13,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:46:13,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:46:13,602 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:46:13,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:46:13,624 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2023-02-16 02:46:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:46:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 02:46:13,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:46:13,631 INFO L225 Difference]: With dead ends: 35 [2023-02-16 02:46:13,635 INFO L226 Difference]: Without dead ends: 15 [2023-02-16 02:46:13,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:46:13,648 INFO L413 NwaCegarLoop]: 21 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, 21 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:46:13,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:46:13,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-16 02:46:13,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-16 02:46:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:46:13,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-16 02:46:13,674 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2023-02-16 02:46:13,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:46:13,675 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-16 02:46:13,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:46:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-16 02:46:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-16 02:46:13,676 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:46:13,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:46:13,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 02:46:13,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-16 02:46:13,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:46:13,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:46:13,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2023-02-16 02:46:13,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:46:13,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990374949] [2023-02-16 02:46:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:46:13,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:46:13,894 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:46:13,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [58575282] [2023-02-16 02:46:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:46:13,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:46:13,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:46:13,896 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:46:13,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 02:46:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:46:13,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 02:46:13,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:46:14,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:46:14,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:46:14,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:46:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990374949] [2023-02-16 02:46:14,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:46:14,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58575282] [2023-02-16 02:46:14,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58575282] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:46:14,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:46:14,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 02:46:14,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261885171] [2023-02-16 02:46:14,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:46:14,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:46:14,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:46:14,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:46:14,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:46:14,076 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:46:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:46:14,166 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-02-16 02:46:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:46:14,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-16 02:46:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:46:14,168 INFO L225 Difference]: With dead ends: 26 [2023-02-16 02:46:14,169 INFO L226 Difference]: Without dead ends: 22 [2023-02-16 02:46:14,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:46:14,171 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:46:14,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 45 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:46:14,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-16 02:46:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-16 02:46:14,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:46:14,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-16 02:46:14,183 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2023-02-16 02:46:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:46:14,184 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-16 02:46:14,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:46:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-16 02:46:14,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-16 02:46:14,186 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:46:14,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:46:14,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 02:46:14,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-16 02:46:14,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:46:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:46:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2023-02-16 02:46:14,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:46:14,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389032396] [2023-02-16 02:46:14,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:46:14,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:46:14,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:46:14,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101200571] [2023-02-16 02:46:14,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:46:14,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:46:14,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:46:14,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:46:14,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 02:46:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:46:14,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 02:46:14,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:46:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:46:14,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:46:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 02:46:14,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:46:14,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389032396] [2023-02-16 02:46:14,901 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:46:14,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101200571] [2023-02-16 02:46:14,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101200571] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:46:14,901 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:46:14,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-02-16 02:46:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373112053] [2023-02-16 02:46:14,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:46:14,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 02:46:14,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:46:14,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 02:46:14,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-16 02:46:14,904 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:46:14,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:46:14,998 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-02-16 02:46:14,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 02:46:14,999 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 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 16 [2023-02-16 02:46:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:46:15,000 INFO L225 Difference]: With dead ends: 33 [2023-02-16 02:46:15,000 INFO L226 Difference]: Without dead ends: 27 [2023-02-16 02:46:15,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-02-16 02:46:15,001 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:46:15,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 58 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:46:15,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-16 02:46:15,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-02-16 02:46:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:46:15,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2023-02-16 02:46:15,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2023-02-16 02:46:15,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:46:15,013 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2023-02-16 02:46:15,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:46:15,014 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2023-02-16 02:46:15,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 02:46:15,014 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:46:15,015 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:46:15,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:46:15,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:46:15,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:46:15,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:46:15,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2023-02-16 02:46:15,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:46:15,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263678834] [2023-02-16 02:46:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:46:15,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:46:15,229 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:46:15,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522301418] [2023-02-16 02:46:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:46:15,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:46:15,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:46:15,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:46:15,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 02:46:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:46:15,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-16 02:46:15,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:46:15,509 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:46:15,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:46:19,727 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) .cse0 1) (+ |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)))) (not (let ((.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (<= (div (+ (- (* |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) .cse1) (* (- 13) .cse0)) (- 4)) (+ .cse1 (* 3 .cse0) |c_ULTIMATE.start_main_~x~0#1|)))) (not (= (mod (+ (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |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|)) 4) 0)))) is different from false [2023-02-16 02:46:21,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:46:21,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263678834] [2023-02-16 02:46:21,756 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:46:21,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522301418] [2023-02-16 02:46:21,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522301418] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:46:21,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:46:21,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-02-16 02:46:21,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380767093] [2023-02-16 02:46:21,757 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 02:46:21,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 02:46:21,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:46:21,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 02:46:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=165, Unknown=1, NotChecked=26, Total=240 [2023-02-16 02:46:21,758 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:46:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:46:21,862 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-02-16 02:46:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 02:46:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 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 22 [2023-02-16 02:46:21,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:46:21,863 INFO L225 Difference]: With dead ends: 31 [2023-02-16 02:46:21,863 INFO L226 Difference]: Without dead ends: 26 [2023-02-16 02:46:21,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=71, Invalid=238, Unknown=1, NotChecked=32, Total=342 [2023-02-16 02:46:21,864 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:46:21,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 66 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:46:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-16 02:46:21,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-16 02:46:21,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-16 02:46:21,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-02-16 02:46:21,869 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2023-02-16 02:46:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:46:21,870 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-02-16 02:46:21,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:46:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-02-16 02:46:21,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 02:46:21,870 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:46:21,871 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:46:21,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 02:46:22,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:46:22,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:46:22,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:46:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1075497887, now seen corresponding path program 2 times [2023-02-16 02:46:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:46:22,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363054241] [2023-02-16 02:46:22,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:46:22,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:46:22,084 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:46:22,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [965269557] [2023-02-16 02:46:22,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:46:22,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:46:22,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:46:22,086 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:46:22,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 02:46:22,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:46:22,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:46:22,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-16 02:46:22,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:46:22,275 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-16 02:46:22,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:46:28,364 WARN L837 $PredicateComparison]: unable to prove that (or (= (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 1) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1|) |c_ULTIMATE.start_main_~k~0#1|)) (not (= (mod (+ (* 3 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 2 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 3 |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|)) 4) 0)) (not (< |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~k~0#1|))) is different from false [2023-02-16 02:46:50,416 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9| Int)) (or (= (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|) 1) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9|) |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|)) 4) 0)))) is different from true [2023-02-16 02:47:08,461 WARN L859 $PredicateComparison]: unable to prove that (or (= 0 c___VERIFIER_assert_~cond) (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9| Int)) (or (= (+ (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|) (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|) 1) (+ (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9|) |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_9|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_14|)) 4) 0)))) is different from true [2023-02-16 02:47:31,260 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 5 refuted. 3 times theorem prover too weak. 6 trivial. 5 not checked. [2023-02-16 02:47:31,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:47:31,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363054241] [2023-02-16 02:47:31,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:47:31,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965269557] [2023-02-16 02:47:31,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965269557] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:47:31,260 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:47:31,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2023-02-16 02:47:31,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557371886] [2023-02-16 02:47:31,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:47:31,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 02:47:31,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:47:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 02:47:31,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=222, Unknown=5, NotChecked=96, Total=380 [2023-02-16 02:47:31,262 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 20 states, 20 states have (on average 1.65) internal successors, (33), 18 states have internal predecessors, (33), 6 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:47:35,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:47:35,477 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2023-02-16 02:47:35,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 02:47:35,478 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 18 states have internal predecessors, (33), 6 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2023-02-16 02:47:35,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:47:35,478 INFO L225 Difference]: With dead ends: 36 [2023-02-16 02:47:35,478 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 02:47:35,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=107, Invalid=406, Unknown=5, NotChecked=132, Total=650 [2023-02-16 02:47:35,479 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:47:35,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 60 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 53 Unchecked, 0.1s Time] [2023-02-16 02:47:35,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 02:47:35,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 02:47:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 02:47:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 02:47:35,480 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2023-02-16 02:47:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:47:35,480 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 02:47:35,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.65) internal successors, (33), 18 states have internal predecessors, (33), 6 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:47:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 02:47:35,480 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 02:47:35,483 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:47:35,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 02:47:35,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:47:35,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 02:47:35,947 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 02:47:35,947 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (* 4 |ULTIMATE.start_main_~x~0#1|))) (.cse0 (<= |ULTIMATE.start_main_~k~0#1| 2)) (.cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse0 .cse1 .cse2 (< 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|)) (and (<= 2 |ULTIMATE.start_main_~k~0#1|) .cse0 .cse1 .cse2 (not (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= |ULTIMATE.start_main_~y~0#1| 2)) (and (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~y~0#1| 0) .cse2 (= |ULTIMATE.start_main_~c~0#1| 0)))) [2023-02-16 02:47:35,947 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (let ((.cse0 (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) .cse2)) (.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 2 .cse3)) (* 4 |ULTIMATE.start_main_~x~0#1|)))) (or (and .cse0 (<= 2 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 2) .cse1 .cse2 (not (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= |ULTIMATE.start_main_~y~0#1| 2)) (and (= |ULTIMATE.start_main_~x~0#1| 0) .cse0 (= |ULTIMATE.start_main_~y~0#1| 0)) (and (<= |ULTIMATE.start_main_~c~0#1| 1) (<= |ULTIMATE.start_main_~x~0#1| .cse3) .cse0 (<= |ULTIMATE.start_main_~k~0#1| 1) .cse1 (< 0 |ULTIMATE.start_main_~k~0#1|))))) [2023-02-16 02:47:35,947 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 02:47:35,947 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 17 40) the Hoare annotation is: true [2023-02-16 02:47:35,947 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-02-16 02:47:35,947 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-02-16 02:47:35,947 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 02:47:35,948 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 02:47:35,948 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse1 (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (* 4 |ULTIMATE.start_main_~x~0#1|))) (.cse0 (<= |ULTIMATE.start_main_~k~0#1| 2)) (.cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1))) (or (and (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) .cse0 .cse1 .cse2 (< 0 |ULTIMATE.start_main_~k~0#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|)) (and (<= 2 |ULTIMATE.start_main_~k~0#1|) .cse0 .cse1 .cse2 (not (< |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (= |ULTIMATE.start_main_~y~0#1| 2)) (and (= |ULTIMATE.start_main_~x~0#1| 0) (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~y~0#1| 0) .cse2 (= |ULTIMATE.start_main_~c~0#1| 0)))) [2023-02-16 02:47:35,948 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2023-02-16 02:47:35,948 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-02-16 02:47:35,948 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (and (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (* 4 |ULTIMATE.start_main_~x~0#1|))) [2023-02-16 02:47:35,948 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-02-16 02:47:35,948 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-02-16 02:47:35,948 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-02-16 02:47:35,948 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-02-16 02:47:35,948 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-02-16 02:47:35,948 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-02-16 02:47:35,951 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-02-16 02:47:35,952 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:47:35,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:47:35 BoogieIcfgContainer [2023-02-16 02:47:35,963 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:47:35,963 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:47:35,964 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:47:35,964 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:47:35,964 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:46:13" (3/4) ... [2023-02-16 02:47:35,966 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 02:47:35,971 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-16 02:47:35,973 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-16 02:47:35,973 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-16 02:47:35,973 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 02:47:35,974 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 02:47:35,995 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 02:47:35,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:47:35,996 INFO L158 Benchmark]: Toolchain (without parser) took 83197.52ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 95.0MB in the beginning and 159.0MB in the end (delta: -63.9MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2023-02-16 02:47:35,996 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:47:35,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.19ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 84.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:47:35,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.40ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 82.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:47:35,997 INFO L158 Benchmark]: Boogie Preprocessor took 30.02ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 81.6MB in the end (delta: 811.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:47:35,997 INFO L158 Benchmark]: RCFGBuilder took 210.75ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 71.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:47:35,998 INFO L158 Benchmark]: TraceAbstraction took 82715.46ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 70.5MB in the beginning and 161.1MB in the end (delta: -90.6MB). Peak memory consumption was 84.3MB. Max. memory is 16.1GB. [2023-02-16 02:47:35,998 INFO L158 Benchmark]: Witness Printer took 32.07ms. Allocated memory is still 209.7MB. Free memory was 161.1MB in the beginning and 159.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:47:35,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.19ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 84.0MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.40ms. Allocated memory is still 142.6MB. Free memory was 84.0MB in the beginning and 82.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.02ms. Allocated memory is still 142.6MB. Free memory was 82.4MB in the beginning and 81.6MB in the end (delta: 811.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 210.75ms. Allocated memory is still 142.6MB. Free memory was 81.3MB in the beginning and 71.2MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 82715.46ms. Allocated memory was 142.6MB in the beginning and 209.7MB in the end (delta: 67.1MB). Free memory was 70.5MB in the beginning and 161.1MB in the end (delta: -90.6MB). Peak memory consumption was 84.3MB. Max. memory is 16.1GB. * Witness Printer took 32.07ms. Allocated memory is still 209.7MB. Free memory was 161.1MB in the beginning and 159.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 82.7s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 250 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53 IncrementalHoareTripleChecker+Unchecked, 179 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 330 IncrementalHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 71 mSDtfsCounter, 330 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 89 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 25.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 19 PreInvPairs, 32 NumberOfFragments, 317 HoareAnnotationTreeSize, 19 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 221 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 76.1s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 123 ConstructedInterpolants, 3 QuantifiedInterpolants, 896 SizeOfPredicates, 20 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 39/73 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((((((c <= 1 && y == 1) && k <= 2) && y * y + y * y * y * y + 2 * (y * y * y) == 4 * x) && cond == 1) && 0 < k) && 1 <= c) || (((((2 <= k && k <= 2) && y * y + y * y * y * y + 2 * (y * y * y) == 4 * x) && cond == 1) && !(c < k)) && y == 2)) || (((((x == 0 && 0 <= k) && k <= 2) && y == 0) && cond == 1) && c == 0) RESULT: Ultimate proved your program to be correct! [2023-02-16 02:47:36,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE