./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/sum02-1.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/bitvector/sum02-1.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 59d79cb7d07f30328554c1c1dfb3c3c4d9d249fe2beb0f1abdeaf89c4a9e9025 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:22:12,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:22:12,894 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:22:12,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:22:12,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:22:12,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:22:12,937 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:22:12,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:22:12,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:22:12,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:22:12,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:22:12,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:22:12,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:22:12,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:22:12,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:22:12,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:22:12,954 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:22:12,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:22:12,956 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:22:12,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:22:12,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:22:12,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:22:12,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:22:12,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:22:12,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:22:12,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:22:12,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:22:12,975 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:22:12,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:22:12,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:22:12,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:22:12,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:22:12,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:22:12,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:22:12,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:22:12,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:22:12,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:22:12,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:22:12,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:22:12,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:22:12,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:22:12,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:22:13,013 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:22:13,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:22:13,014 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:22:13,015 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:22:13,015 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:22:13,016 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:22:13,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:22:13,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:22:13,017 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:22:13,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:22:13,018 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:22:13,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:22:13,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:22:13,018 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:22:13,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:22:13,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:22:13,019 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:22:13,019 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:22:13,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:22:13,020 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:22:13,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:22:13,020 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:22:13,020 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:22:13,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:22:13,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:22:13,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:22:13,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:22:13,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:22:13,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:22:13,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:22:13,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:22:13,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:22:13,023 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:22:13,023 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:22:13,024 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:22:13,024 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d79cb7d07f30328554c1c1dfb3c3c4d9d249fe2beb0f1abdeaf89c4a9e9025 [2023-02-17 00:22:13,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:22:13,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:22:13,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:22:13,248 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:22:13,248 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:22:13,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/sum02-1.c [2023-02-17 00:22:14,312 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:22:14,476 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:22:14,476 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/sum02-1.c [2023-02-17 00:22:14,482 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/617aad673/5809d95f7ef3400c936ce7abfb395ce8/FLAG30fa19d04 [2023-02-17 00:22:14,492 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/617aad673/5809d95f7ef3400c936ce7abfb395ce8 [2023-02-17 00:22:14,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:22:14,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:22:14,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:22:14,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:22:14,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:22:14,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,500 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fd50740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14, skipping insertion in model container [2023-02-17 00:22:14,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:22:14,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:22:14,631 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/bitvector/sum02-1.c[624,637] [2023-02-17 00:22:14,642 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:22:14,649 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:22:14,658 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/bitvector/sum02-1.c[624,637] [2023-02-17 00:22:14,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:22:14,670 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:22:14,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14 WrapperNode [2023-02-17 00:22:14,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:22:14,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:22:14,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:22:14,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:22:14,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,698 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2023-02-17 00:22:14,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:22:14,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:22:14,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:22:14,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:22:14,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,710 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,710 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:22:14,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:22:14,713 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:22:14,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:22:14,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (1/1) ... [2023-02-17 00:22:14,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:22:14,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:22:14,746 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) [2023-02-17 00:22:14,760 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 [2023-02-17 00:22:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:22:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:22:14,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:22:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:22:14,832 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:22:14,835 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:22:14,984 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:22:14,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:22:15,004 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 00:22:15,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:22:15 BoogieIcfgContainer [2023-02-17 00:22:15,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:22:15,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:22:15,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:22:15,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:22:15,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:22:14" (1/3) ... [2023-02-17 00:22:15,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a28546e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:22:15, skipping insertion in model container [2023-02-17 00:22:15,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:22:14" (2/3) ... [2023-02-17 00:22:15,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a28546e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:22:15, skipping insertion in model container [2023-02-17 00:22:15,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:22:15" (3/3) ... [2023-02-17 00:22:15,015 INFO L112 eAbstractionObserver]: Analyzing ICFG sum02-1.c [2023-02-17 00:22:15,031 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:22:15,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:22:15,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:22:15,074 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;@7419e27c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:22:15,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:22:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2023-02-17 00:22:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 00:22:15,108 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:22:15,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 00:22:15,110 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:22:15,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:22:15,114 INFO L85 PathProgramCache]: Analyzing trace with hash 889605037, now seen corresponding path program 1 times [2023-02-17 00:22:15,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:22:15,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826568639] [2023-02-17 00:22:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:22:15,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:22:15,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 00:22:15,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975629919] [2023-02-17 00:22:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:22:15,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:22:15,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:22:15,201 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) [2023-02-17 00:22:15,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 00:22:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:22:15,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 00:22:15,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:22:15,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:22:15,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 00:22:15,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:22:15,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826568639] [2023-02-17 00:22:15,344 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 00:22:15,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975629919] [2023-02-17 00:22:15,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975629919] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:22:15,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:22:15,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:22:15,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746481894] [2023-02-17 00:22:15,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:22:15,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:22:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:22:15,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:22:15,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:22:15,389 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 00:22:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:22:15,415 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2023-02-17 00:22:15,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:22:15,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2023-02-17 00:22:15,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:22:15,426 INFO L225 Difference]: With dead ends: 22 [2023-02-17 00:22:15,426 INFO L226 Difference]: Without dead ends: 10 [2023-02-17 00:22:15,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:22:15,432 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:22:15,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:22:15,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-17 00:22:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-02-17 00:22:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2023-02-17 00:22:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2023-02-17 00:22:15,469 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2023-02-17 00:22:15,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:22:15,469 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2023-02-17 00:22:15,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 00:22:15,470 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2023-02-17 00:22:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 00:22:15,471 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:22:15,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:22:15,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 00:22:15,679 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 [2023-02-17 00:22:15,679 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:22:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:22:15,680 INFO L85 PathProgramCache]: Analyzing trace with hash 265180975, now seen corresponding path program 1 times [2023-02-17 00:22:15,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:22:15,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702278208] [2023-02-17 00:22:15,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:22:15,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:22:15,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 00:22:15,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252610973] [2023-02-17 00:22:15,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:22:15,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:22:15,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:22:15,704 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) [2023-02-17 00:22:15,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 00:22:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:22:15,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 00:22:15,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:22:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:22:15,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:22:18,162 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_ULTIMATE.start_main_~sn~0#1| 4294967296))) (let ((.cse0 (= .cse2 0))) (let ((.cse11 (not .cse0))) (and (or .cse0 (and (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (let ((.cse1 (mod (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 4294967296))) (let ((.cse3 (div .cse1 2))) (or (< .cse1 0) (not (= .cse2 (mod (+ .cse3 1) 4294967296))) (= .cse2 (mod .cse3 4294967296)))))) (or .cse0 (and (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (let ((.cse6 (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse4 (mod .cse6 4294967296))) (let ((.cse5 (div .cse4 2))) (or (not (< .cse4 0)) (= .cse2 (mod (+ .cse5 1) 4294967296)) (= .cse2 (mod .cse5 4294967296)) (= (mod .cse6 2) 0)))))) (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (let ((.cse8 (mod (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 4294967296))) (let ((.cse7 (div .cse8 2))) (or (= .cse2 (mod (+ .cse7 1) 4294967296)) (< .cse8 0) (= .cse2 (mod .cse7 4294967296)))))) (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (let ((.cse10 (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse9 (div (mod .cse10 4294967296) 2))) (or (= .cse2 (mod (+ .cse9 1) 4294967296)) (= .cse2 (mod .cse9 4294967296)) (not (= (mod .cse10 2) 0)))))))) (or .cse11 (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (let ((.cse12 (mod (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) 4294967296))) (or (< .cse12 0) (= .cse2 (mod (div .cse12 2) 4294967296)))))) (or (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (let ((.cse13 (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (or (= .cse2 (mod (div (mod .cse13 4294967296) 2) 4294967296)) (not (= (mod .cse13 2) 0))))) .cse11) (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (let ((.cse15 (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse14 (div (mod .cse15 4294967296) 2))) (or (not (= .cse2 (mod (+ .cse14 1) 4294967296))) (= .cse2 (mod .cse14 4294967296)) (not (= (mod .cse15 2) 0)))))))) (or .cse0 (and (or (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (let ((.cse17 (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse16 (mod .cse17 4294967296))) (or (not (< .cse16 0)) (= .cse2 (mod (+ (div .cse16 2) 1) 4294967296)) (= (mod .cse17 2) 0))))) .cse11) (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (let ((.cse20 (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)))) (let ((.cse18 (mod .cse20 4294967296))) (let ((.cse19 (div .cse18 2))) (or (not (< .cse18 0)) (= .cse2 (mod (+ .cse19 1) 4294967296)) (= (mod .cse20 2) 0) (not (= .cse2 (mod .cse19 4294967296)))))))))))))) is different from false [2023-02-17 00:22:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-02-17 00:22:26,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:22:26,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702278208] [2023-02-17 00:22:26,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-17 00:22:26,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252610973] [2023-02-17 00:22:26,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252610973] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:22:26,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:22:26,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-17 00:22:26,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823185461] [2023-02-17 00:22:26,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:22:26,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 00:22:26,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:22:26,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 00:22:26,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=27, Unknown=3, NotChecked=10, Total=56 [2023-02-17 00:22:26,162 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2023-02-17 00:22:28,240 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 [1] [2023-02-17 00:22:28,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:22:28,628 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2023-02-17 00:22:28,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 00:22:28,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) Word has length 8 [2023-02-17 00:22:28,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:22:28,629 INFO L225 Difference]: With dead ends: 15 [2023-02-17 00:22:28,629 INFO L226 Difference]: Without dead ends: 11 [2023-02-17 00:22:28,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=21, Invalid=36, Unknown=3, NotChecked=12, Total=72 [2023-02-17 00:22:28,630 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-17 00:22:28,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 22 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 1 Unknown, 3 Unchecked, 2.2s Time] [2023-02-17 00:22:28,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-02-17 00:22:28,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-17 00:22:28,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2023-02-17 00:22:28,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-02-17 00:22:28,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2023-02-17 00:22:28,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:22:28,634 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-02-17 00:22:28,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 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) [2023-02-17 00:22:28,634 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-02-17 00:22:28,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 00:22:28,634 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:22:28,635 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 00:22:28,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 00:22:28,840 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 [2023-02-17 00:22:28,841 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:22:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:22:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1489078833, now seen corresponding path program 2 times [2023-02-17 00:22:28,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:22:28,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22345997] [2023-02-17 00:22:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:22:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:22:28,854 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-17 00:22:28,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061374763] [2023-02-17 00:22:28,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 00:22:28,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:22:28,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:22:28,861 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) [2023-02-17 00:22:28,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process