./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-multidimensional/transpose-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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/array-multidimensional/transpose-u.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 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 18:39:32,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 18:39:32,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 18:39:32,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 18:39:32,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 18:39:32,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 18:39:32,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 18:39:32,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 18:39:32,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 18:39:32,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 18:39:32,125 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 18:39:32,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 18:39:32,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 18:39:32,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 18:39:32,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 18:39:32,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 18:39:32,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 18:39:32,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 18:39:32,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 18:39:32,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 18:39:32,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 18:39:32,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 18:39:32,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 18:39:32,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 18:39:32,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 18:39:32,150 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 18:39:32,150 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 18:39:32,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 18:39:32,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 18:39:32,153 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 18:39:32,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 18:39:32,154 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 18:39:32,155 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 18:39:32,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 18:39:32,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 18:39:32,157 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 18:39:32,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 18:39:32,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 18:39:32,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 18:39:32,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 18:39:32,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 18:39:32,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 18:39:32,194 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 18:39:32,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 18:39:32,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 18:39:32,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 18:39:32,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 18:39:32,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 18:39:32,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 18:39:32,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 18:39:32,197 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 18:39:32,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 18:39:32,198 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 18:39:32,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 18:39:32,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 18:39:32,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 18:39:32,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 18:39:32,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 18:39:32,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 18:39:32,200 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 18:39:32,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 18:39:32,200 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 18:39:32,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 18:39:32,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 18:39:32,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 18:39:32,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 18:39:32,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:39:32,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 18:39:32,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 18:39:32,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 18:39:32,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 18:39:32,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 18:39:32,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 18:39:32,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 18:39:32,204 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 18:39:32,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 18:39:32,204 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 18:39:32,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44b06771d393671cf9550617b8bf478abc837489f84f20705c70efc1808f7508 [2023-02-15 18:39:32,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 18:39:32,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 18:39:32,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 18:39:32,465 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 18:39:32,465 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 18:39:32,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/transpose-u.c [2023-02-15 18:39:33,480 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 18:39:33,675 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 18:39:33,675 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/transpose-u.c [2023-02-15 18:39:33,681 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b7676aa/04bf93a56d5846f8acf364ce0f4be65f/FLAG39641f4a7 [2023-02-15 18:39:33,696 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6b7676aa/04bf93a56d5846f8acf364ce0f4be65f [2023-02-15 18:39:33,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 18:39:33,699 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 18:39:33,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 18:39:33,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 18:39:33,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 18:39:33,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73174835 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33, skipping insertion in model container [2023-02-15 18:39:33,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 18:39:33,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 18:39:33,861 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/array-multidimensional/transpose-u.c[315,328] [2023-02-15 18:39:33,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:39:33,887 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 18:39:33,897 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/array-multidimensional/transpose-u.c[315,328] [2023-02-15 18:39:33,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 18:39:33,912 INFO L208 MainTranslator]: Completed translation [2023-02-15 18:39:33,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33 WrapperNode [2023-02-15 18:39:33,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 18:39:33,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 18:39:33,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 18:39:33,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 18:39:33,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,953 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2023-02-15 18:39:33,953 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 18:39:33,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 18:39:33,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 18:39:33,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 18:39:33,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,977 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 18:39:33,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 18:39:33,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 18:39:33,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 18:39:33,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (1/1) ... [2023-02-15 18:39:33,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 18:39:34,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:34,018 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) [2023-02-15 18:39:34,023 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 [2023-02-15 18:39:34,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 18:39:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 18:39:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 18:39:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 18:39:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 18:39:34,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 18:39:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 18:39:34,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 18:39:34,091 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 18:39:34,093 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 18:39:34,200 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 18:39:34,206 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 18:39:34,207 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2023-02-15 18:39:34,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:39:34 BoogieIcfgContainer [2023-02-15 18:39:34,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 18:39:34,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 18:39:34,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 18:39:34,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 18:39:34,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 06:39:33" (1/3) ... [2023-02-15 18:39:34,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e834dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:39:34, skipping insertion in model container [2023-02-15 18:39:34,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 06:39:33" (2/3) ... [2023-02-15 18:39:34,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e834dd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 06:39:34, skipping insertion in model container [2023-02-15 18:39:34,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 06:39:34" (3/3) ... [2023-02-15 18:39:34,215 INFO L112 eAbstractionObserver]: Analyzing ICFG transpose-u.c [2023-02-15 18:39:34,228 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 18:39:34,229 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 18:39:34,263 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 18:39:34,267 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;@596304a5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 18:39:34,268 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 18:39:34,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 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) [2023-02-15 18:39:34,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 18:39:34,276 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:39:34,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:39:34,276 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:39:34,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:39:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash 74794164, now seen corresponding path program 1 times [2023-02-15 18:39:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:39:34,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664612253] [2023-02-15 18:39:34,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:34,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:39:34,354 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:39:34,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1530346406] [2023-02-15 18:39:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:34,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:34,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:34,358 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) [2023-02-15 18:39:34,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 18:39:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:39:34,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 18:39:34,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:39:34,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:39:34,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 18:39:34,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:39:34,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664612253] [2023-02-15 18:39:34,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:39:34,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530346406] [2023-02-15 18:39:34,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530346406] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:39:34,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:39:34,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 18:39:34,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152385409] [2023-02-15 18:39:34,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:39:34,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 18:39:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:39:34,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 18:39:34,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 18:39:34,585 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.6666666666666667) internal successors, (35), 22 states have internal predecessors, (35), 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 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-02-15 18:39:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:39:34,656 INFO L93 Difference]: Finished difference Result 48 states and 76 transitions. [2023-02-15 18:39:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 18:39:34,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2023-02-15 18:39:34,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:39:34,668 INFO L225 Difference]: With dead ends: 48 [2023-02-15 18:39:34,668 INFO L226 Difference]: Without dead ends: 23 [2023-02-15 18:39:34,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 18:39:34,678 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:39:34,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:39:34,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-15 18:39:34,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2023-02-15 18:39:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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) [2023-02-15 18:39:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2023-02-15 18:39:34,714 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 10 [2023-02-15 18:39:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:39:34,714 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2023-02-15 18:39:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-02-15 18:39:34,716 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2023-02-15 18:39:34,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-15 18:39:34,717 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:39:34,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:39:34,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 18:39:34,922 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 [2023-02-15 18:39:34,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:39:34,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:39:34,923 INFO L85 PathProgramCache]: Analyzing trace with hash 876166624, now seen corresponding path program 1 times [2023-02-15 18:39:34,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:39:34,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056867200] [2023-02-15 18:39:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:34,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:39:34,941 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:39:34,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426757370] [2023-02-15 18:39:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:34,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:34,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:34,950 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) [2023-02-15 18:39:34,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 18:39:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:39:35,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 18:39:35,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:39:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:39:35,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 18:39:35,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:39:35,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056867200] [2023-02-15 18:39:35,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:39:35,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426757370] [2023-02-15 18:39:35,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426757370] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:39:35,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:39:35,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 18:39:35,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697058057] [2023-02-15 18:39:35,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:39:35,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 18:39:35,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:39:35,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 18:39:35,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 18:39:35,050 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-15 18:39:35,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:39:35,102 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-02-15 18:39:35,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 18:39:35,103 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-02-15 18:39:35,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:39:35,104 INFO L225 Difference]: With dead ends: 49 [2023-02-15 18:39:35,105 INFO L226 Difference]: Without dead ends: 32 [2023-02-15 18:39:35,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 18:39:35,106 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 29 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:39:35,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 21 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:39:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-15 18:39:35,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2023-02-15 18:39:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 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) [2023-02-15 18:39:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2023-02-15 18:39:35,115 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13 [2023-02-15 18:39:35,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:39:35,116 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2023-02-15 18:39:35,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-02-15 18:39:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2023-02-15 18:39:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 18:39:35,118 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:39:35,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:39:35,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 18:39:35,318 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 [2023-02-15 18:39:35,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:39:35,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:39:35,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1798277150, now seen corresponding path program 1 times [2023-02-15 18:39:35,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:39:35,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145865153] [2023-02-15 18:39:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:35,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:39:35,332 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:39:35,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466545342] [2023-02-15 18:39:35,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:35,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:35,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:35,334 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) [2023-02-15 18:39:35,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 18:39:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:39:35,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 18:39:35,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:39:35,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:39:35,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:39:35,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 18:39:35,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:39:35,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145865153] [2023-02-15 18:39:35,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:39:35,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466545342] [2023-02-15 18:39:35,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466545342] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:39:35,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:39:35,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-15 18:39:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293431100] [2023-02-15 18:39:35,514 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:39:35,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 18:39:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:39:35,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 18:39:35,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-02-15 18:39:35,517 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2023-02-15 18:39:35,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:39:35,633 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2023-02-15 18:39:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 18:39:35,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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 15 [2023-02-15 18:39:35,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:39:35,636 INFO L225 Difference]: With dead ends: 73 [2023-02-15 18:39:35,637 INFO L226 Difference]: Without dead ends: 53 [2023-02-15 18:39:35,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-02-15 18:39:35,640 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 77 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:39:35,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 35 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:39:35,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-15 18:39:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2023-02-15 18:39:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 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) [2023-02-15 18:39:35,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2023-02-15 18:39:35,648 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 15 [2023-02-15 18:39:35,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:39:35,648 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2023-02-15 18:39:35,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 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) [2023-02-15 18:39:35,649 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2023-02-15 18:39:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 18:39:35,649 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:39:35,650 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:39:35,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 18:39:35,853 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 [2023-02-15 18:39:35,853 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:39:35,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:39:35,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2120756504, now seen corresponding path program 2 times [2023-02-15 18:39:35,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:39:35,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075825055] [2023-02-15 18:39:35,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:35,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:39:35,866 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:39:35,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591060698] [2023-02-15 18:39:35,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 18:39:35,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:35,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:35,868 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) [2023-02-15 18:39:35,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 18:39:35,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 18:39:35,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:39:35,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 18:39:35,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:39:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 18:39:35,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 18:39:35,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:39:35,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075825055] [2023-02-15 18:39:35,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:39:35,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591060698] [2023-02-15 18:39:35,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591060698] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 18:39:35,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 18:39:35,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 18:39:35,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791598798] [2023-02-15 18:39:35,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 18:39:35,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 18:39:35,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:39:35,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 18:39:35,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 18:39:35,978 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-02-15 18:39:36,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:39:36,023 INFO L93 Difference]: Finished difference Result 104 states and 123 transitions. [2023-02-15 18:39:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 18:39:36,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 21 [2023-02-15 18:39:36,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:39:36,026 INFO L225 Difference]: With dead ends: 104 [2023-02-15 18:39:36,026 INFO L226 Difference]: Without dead ends: 82 [2023-02-15 18:39:36,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 18:39:36,028 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 43 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:39:36,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:39:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-15 18:39:36,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 45. [2023-02-15 18:39:36,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 44 states have internal predecessors, (53), 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) [2023-02-15 18:39:36,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2023-02-15 18:39:36,037 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 21 [2023-02-15 18:39:36,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:39:36,038 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2023-02-15 18:39:36,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-02-15 18:39:36,038 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2023-02-15 18:39:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 18:39:36,039 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:39:36,039 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:39:36,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 18:39:36,245 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 [2023-02-15 18:39:36,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:39:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:39:36,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2013197213, now seen corresponding path program 1 times [2023-02-15 18:39:36,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:39:36,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661133408] [2023-02-15 18:39:36,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:36,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:39:36,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:39:36,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [439916381] [2023-02-15 18:39:36,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:36,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:36,290 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) [2023-02-15 18:39:36,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 18:39:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 18:39:36,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 18:39:36,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:39:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-15 18:39:36,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:39:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-15 18:39:36,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:39:36,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661133408] [2023-02-15 18:39:36,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:39:36,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439916381] [2023-02-15 18:39:36,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439916381] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:39:36,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:39:36,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-02-15 18:39:36,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343560208] [2023-02-15 18:39:36,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:39:36,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 18:39:36,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:39:36,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 18:39:36,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2023-02-15 18:39:36,519 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2023-02-15 18:39:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:39:36,713 INFO L93 Difference]: Finished difference Result 147 states and 178 transitions. [2023-02-15 18:39:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 18:39:36,714 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 28 [2023-02-15 18:39:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:39:36,718 INFO L225 Difference]: With dead ends: 147 [2023-02-15 18:39:36,718 INFO L226 Difference]: Without dead ends: 105 [2023-02-15 18:39:36,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2023-02-15 18:39:36,720 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 215 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 18:39:36,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 64 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 18:39:36,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-15 18:39:36,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2023-02-15 18:39:36,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.1744186046511629) internal successors, (101), 86 states have internal predecessors, (101), 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) [2023-02-15 18:39:36,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 101 transitions. [2023-02-15 18:39:36,748 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 101 transitions. Word has length 28 [2023-02-15 18:39:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:39:36,749 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 101 transitions. [2023-02-15 18:39:36,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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) [2023-02-15 18:39:36,750 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 101 transitions. [2023-02-15 18:39:36,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 18:39:36,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:39:36,752 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:39:36,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 18:39:36,961 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 [2023-02-15 18:39:36,961 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:39:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:39:36,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2105523119, now seen corresponding path program 2 times [2023-02-15 18:39:36,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:39:36,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833579687] [2023-02-15 18:39:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:39:36,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:39:36,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646842668] [2023-02-15 18:39:36,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 18:39:36,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:36,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:36,998 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 18:39:37,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 18:39:37,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 18:39:37,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:39:37,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 18:39:37,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:39:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 1 proven. 100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-15 18:39:37,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:39:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 1 proven. 100 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-02-15 18:39:37,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:39:37,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833579687] [2023-02-15 18:39:37,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:39:37,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646842668] [2023-02-15 18:39:37,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646842668] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:39:37,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:39:37,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-02-15 18:39:37,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470686020] [2023-02-15 18:39:37,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:39:37,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 18:39:37,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:39:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 18:39:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2023-02-15 18:39:37,546 INFO L87 Difference]: Start difference. First operand 87 states and 101 transitions. Second operand has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 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) [2023-02-15 18:39:37,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:39:37,982 INFO L93 Difference]: Finished difference Result 297 states and 352 transitions. [2023-02-15 18:39:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 18:39:37,983 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 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 46 [2023-02-15 18:39:37,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:39:37,984 INFO L225 Difference]: With dead ends: 297 [2023-02-15 18:39:37,984 INFO L226 Difference]: Without dead ends: 213 [2023-02-15 18:39:37,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 18:39:37,988 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 311 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 18:39:37,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 147 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 18:39:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-02-15 18:39:38,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 171. [2023-02-15 18:39:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.1588235294117648) internal successors, (197), 170 states have internal predecessors, (197), 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) [2023-02-15 18:39:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 197 transitions. [2023-02-15 18:39:38,021 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 197 transitions. Word has length 46 [2023-02-15 18:39:38,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:39:38,023 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 197 transitions. [2023-02-15 18:39:38,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3076923076923075) internal successors, (60), 26 states have internal predecessors, (60), 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) [2023-02-15 18:39:38,023 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 197 transitions. [2023-02-15 18:39:38,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-15 18:39:38,026 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:39:38,027 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:39:38,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-15 18:39:38,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:38,233 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:39:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:39:38,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1796874681, now seen corresponding path program 3 times [2023-02-15 18:39:38,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:39:38,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035920212] [2023-02-15 18:39:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:38,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:39:38,258 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:39:38,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536688204] [2023-02-15 18:39:38,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 18:39:38,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:38,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:38,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 18:39:38,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 18:39:38,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-15 18:39:38,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:39:38,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 18:39:38,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:39:38,501 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2023-02-15 18:39:38,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:39:38,580 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked. [2023-02-15 18:39:38,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:39:38,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035920212] [2023-02-15 18:39:38,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:39:38,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536688204] [2023-02-15 18:39:38,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536688204] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:39:38,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:39:38,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-02-15 18:39:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255568236] [2023-02-15 18:39:38,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:39:38,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 18:39:38,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:39:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 18:39:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-15 18:39:38,583 INFO L87 Difference]: Start difference. First operand 171 states and 197 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2023-02-15 18:39:38,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:39:38,632 INFO L93 Difference]: Finished difference Result 433 states and 489 transitions. [2023-02-15 18:39:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 18:39:38,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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 82 [2023-02-15 18:39:38,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:39:38,634 INFO L225 Difference]: With dead ends: 433 [2023-02-15 18:39:38,634 INFO L226 Difference]: Without dead ends: 312 [2023-02-15 18:39:38,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-15 18:39:38,637 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 18:39:38,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 24 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 18:39:38,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-02-15 18:39:38,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2023-02-15 18:39:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.0964630225080385) internal successors, (341), 311 states have internal predecessors, (341), 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) [2023-02-15 18:39:38,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 341 transitions. [2023-02-15 18:39:38,658 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 341 transitions. Word has length 82 [2023-02-15 18:39:38,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:39:38,660 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 341 transitions. [2023-02-15 18:39:38,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 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) [2023-02-15 18:39:38,660 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 341 transitions. [2023-02-15 18:39:38,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2023-02-15 18:39:38,665 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:39:38,665 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 22, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:39:38,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 18:39:38,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:38,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:39:38,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:39:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash -408047983, now seen corresponding path program 4 times [2023-02-15 18:39:38,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:39:38,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926781493] [2023-02-15 18:39:38,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:38,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:39:38,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:39:38,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965525966] [2023-02-15 18:39:38,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 18:39:38,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:38,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:38,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 18:39:38,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 18:39:39,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 18:39:39,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 18:39:39,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 18:39:39,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 18:39:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 8284 backedges. 231 proven. 23 refuted. 0 times theorem prover too weak. 8030 trivial. 0 not checked. [2023-02-15 18:39:39,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 18:39:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 8284 backedges. 231 proven. 23 refuted. 0 times theorem prover too weak. 8030 trivial. 0 not checked. [2023-02-15 18:39:39,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 18:39:39,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926781493] [2023-02-15 18:39:39,895 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 18:39:39,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965525966] [2023-02-15 18:39:39,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965525966] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 18:39:39,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 18:39:39,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-15 18:39:39,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640299800] [2023-02-15 18:39:39,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 18:39:39,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-15 18:39:39,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 18:39:39,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-15 18:39:39,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1100, Invalid=1552, Unknown=0, NotChecked=0, Total=2652 [2023-02-15 18:39:39,901 INFO L87 Difference]: Start difference. First operand 312 states and 341 transitions. Second operand has 52 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 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) [2023-02-15 18:39:41,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 18:39:41,631 INFO L93 Difference]: Finished difference Result 849 states and 928 transitions. [2023-02-15 18:39:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-02-15 18:39:41,632 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 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 223 [2023-02-15 18:39:41,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 18:39:41,635 INFO L225 Difference]: With dead ends: 849 [2023-02-15 18:39:41,635 INFO L226 Difference]: Without dead ends: 755 [2023-02-15 18:39:41,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 544 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4982 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=5561, Invalid=9691, Unknown=0, NotChecked=0, Total=15252 [2023-02-15 18:39:41,641 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 486 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 18:39:41,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 729 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 988 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-15 18:39:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-02-15 18:39:41,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 387. [2023-02-15 18:39:41,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 386 states have (on average 1.0854922279792747) internal successors, (419), 386 states have internal predecessors, (419), 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) [2023-02-15 18:39:41,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 419 transitions. [2023-02-15 18:39:41,666 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 419 transitions. Word has length 223 [2023-02-15 18:39:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 18:39:41,666 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 419 transitions. [2023-02-15 18:39:41,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 52 states have internal predecessors, (67), 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) [2023-02-15 18:39:41,667 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 419 transitions. [2023-02-15 18:39:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2023-02-15 18:39:41,669 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 18:39:41,669 INFO L195 NwaCegarLoop]: trace histogram [88, 88, 88, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 18:39:41,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 18:39:41,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 18:39:41,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 18:39:41,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 18:39:41,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1641886732, now seen corresponding path program 5 times [2023-02-15 18:39:41,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 18:39:41,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802409625] [2023-02-15 18:39:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 18:39:41,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 18:39:41,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 18:39:41,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254871088] [2023-02-15 18:39:41,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 18:39:41,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 18:39:41,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 18:39:41,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 18:39:41,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process