./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/rule60_list2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/rule60_list2.i -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 ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 00:52:52,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 00:52:52,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 00:52:52,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 00:52:52,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 00:52:52,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 00:52:52,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 00:52:52,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 00:52:52,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 00:52:52,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 00:52:52,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 00:52:52,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 00:52:52,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 00:52:52,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 00:52:52,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 00:52:52,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 00:52:52,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 00:52:52,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 00:52:52,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 00:52:52,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 00:52:52,220 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 00:52:52,221 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 00:52:52,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 00:52:52,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 00:52:52,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 00:52:52,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 00:52:52,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 00:52:52,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 00:52:52,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 00:52:52,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 00:52:52,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 00:52:52,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 00:52:52,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 00:52:52,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 00:52:52,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 00:52:52,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 00:52:52,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 00:52:52,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 00:52:52,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 00:52:52,234 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 00:52:52,235 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 00:52:52,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 00:52:52,270 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 00:52:52,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 00:52:52,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 00:52:52,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 00:52:52,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 00:52:52,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 00:52:52,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 00:52:52,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 00:52:52,273 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 00:52:52,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 00:52:52,274 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 00:52:52,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 00:52:52,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 00:52:52,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 00:52:52,274 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 00:52:52,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 00:52:52,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 00:52:52,275 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 00:52:52,275 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 00:52:52,275 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 00:52:52,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 00:52:52,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 00:52:52,276 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 00:52:52,276 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 00:52:52,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:52:52,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 00:52:52,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 00:52:52,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 00:52:52,277 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 00:52:52,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 00:52:52,277 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 00:52:52,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 00:52:52,277 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 00:52:52,278 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 00:52:52,278 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 00:52:52,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec34d681fc532ab8881c0bb28aeb7b8d0ef0df29d4602290c71f943db752a206 [2023-02-16 00:52:52,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 00:52:52,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 00:52:52,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 00:52:52,476 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 00:52:52,476 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 00:52:52,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/rule60_list2.i [2023-02-16 00:52:53,380 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 00:52:53,667 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 00:52:53,667 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/rule60_list2.i [2023-02-16 00:52:53,674 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a653317a/7c464871b1ed4b61b642ac0a4738e1e1/FLAGd38c4965a [2023-02-16 00:52:53,683 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a653317a/7c464871b1ed4b61b642ac0a4738e1e1 [2023-02-16 00:52:53,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 00:52:53,686 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 00:52:53,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 00:52:53,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 00:52:53,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 00:52:53,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:53,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d010e38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53, skipping insertion in model container [2023-02-16 00:52:53,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:53,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 00:52:53,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 00:52:53,825 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/ldv-regression/rule60_list2.i[292,305] [2023-02-16 00:52:53,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:52:53,942 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 00:52:53,950 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/ldv-regression/rule60_list2.i[292,305] [2023-02-16 00:52:53,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 00:52:53,997 INFO L208 MainTranslator]: Completed translation [2023-02-16 00:52:53,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53 WrapperNode [2023-02-16 00:52:53,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 00:52:53,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 00:52:53,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 00:52:53,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 00:52:54,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,034 INFO L138 Inliner]: procedures = 126, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-02-16 00:52:54,034 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 00:52:54,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 00:52:54,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 00:52:54,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 00:52:54,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,063 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 00:52:54,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 00:52:54,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 00:52:54,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 00:52:54,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (1/1) ... [2023-02-16 00:52:54,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 00:52:54,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:52:54,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 00:52:54,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 00:52:54,115 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2023-02-16 00:52:54,115 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2023-02-16 00:52:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 00:52:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-02-16 00:52:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-02-16 00:52:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 00:52:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2023-02-16 00:52:54,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2023-02-16 00:52:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 00:52:54,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 00:52:54,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 00:52:54,239 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 00:52:54,240 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 00:52:54,359 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 00:52:54,363 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 00:52:54,363 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-16 00:52:54,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:52:54 BoogieIcfgContainer [2023-02-16 00:52:54,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 00:52:54,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 00:52:54,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 00:52:54,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 00:52:54,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 12:52:53" (1/3) ... [2023-02-16 00:52:54,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6a5e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:52:54, skipping insertion in model container [2023-02-16 00:52:54,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 12:52:53" (2/3) ... [2023-02-16 00:52:54,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6a5e7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 12:52:54, skipping insertion in model container [2023-02-16 00:52:54,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:52:54" (3/3) ... [2023-02-16 00:52:54,369 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2023-02-16 00:52:54,390 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 00:52:54,390 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 00:52:54,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 00:52:54,428 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;@3f3de2b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 00:52:54,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 00:52:54,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 00:52:54,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 00:52:54,447 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:52:54,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:52:54,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:52:54,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:52:54,469 INFO L85 PathProgramCache]: Analyzing trace with hash 483918471, now seen corresponding path program 1 times [2023-02-16 00:52:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:52:54,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150004170] [2023-02-16 00:52:54,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:54,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:52:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:52:54,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:52:54,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150004170] [2023-02-16 00:52:54,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150004170] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:52:54,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:52:54,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 00:52:54,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728758464] [2023-02-16 00:52:54,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:52:54,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 00:52:54,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:52:54,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 00:52:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 00:52:54,681 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 28 states have internal predecessors, (31), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:52:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:52:54,742 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2023-02-16 00:52:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 00:52:54,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-16 00:52:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:52:54,749 INFO L225 Difference]: With dead ends: 66 [2023-02-16 00:52:54,750 INFO L226 Difference]: Without dead ends: 29 [2023-02-16 00:52:54,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 00:52:54,755 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 13 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:52:54,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 93 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:52:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-16 00:52:54,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-16 00:52:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 00:52:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2023-02-16 00:52:54,790 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 7 [2023-02-16 00:52:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:52:54,790 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2023-02-16 00:52:54,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:52:54,791 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2023-02-16 00:52:54,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 00:52:54,793 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:52:54,793 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:52:54,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 00:52:54,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:52:54,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:52:54,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1376776956, now seen corresponding path program 1 times [2023-02-16 00:52:54,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:52:54,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180678219] [2023-02-16 00:52:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:54,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:52:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:54,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:52:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:55,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 00:52:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:52:55,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:52:55,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180678219] [2023-02-16 00:52:55,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180678219] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:52:55,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943276570] [2023-02-16 00:52:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:55,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:52:55,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:52:55,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:52:55,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 00:52:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:55,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 00:52:55,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:52:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:52:55,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:52:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:52:55,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943276570] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:52:55,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:52:55,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2023-02-16 00:52:55,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733839813] [2023-02-16 00:52:55,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:52:55,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 00:52:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:52:55,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 00:52:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 00:52:55,342 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 00:52:55,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:52:55,433 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2023-02-16 00:52:55,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 00:52:55,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-02-16 00:52:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:52:55,440 INFO L225 Difference]: With dead ends: 51 [2023-02-16 00:52:55,440 INFO L226 Difference]: Without dead ends: 32 [2023-02-16 00:52:55,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-16 00:52:55,442 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:52:55,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 108 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:52:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-16 00:52:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-16 00:52:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-16 00:52:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2023-02-16 00:52:55,453 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 26 [2023-02-16 00:52:55,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:52:55,453 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2023-02-16 00:52:55,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 5 states have internal predecessors, (18), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 00:52:55,453 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2023-02-16 00:52:55,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 00:52:55,454 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:52:55,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:52:55,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 00:52:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:52:55,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:52:55,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:52:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2100541890, now seen corresponding path program 1 times [2023-02-16 00:52:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:52:55,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009528971] [2023-02-16 00:52:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:52:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:55,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:52:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 00:52:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:52:55,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:52:55,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009528971] [2023-02-16 00:52:55,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009528971] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:52:55,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 00:52:55,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 00:52:55,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395900634] [2023-02-16 00:52:55,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:52:55,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 00:52:55,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:52:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 00:52:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 00:52:55,857 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:52:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:52:55,930 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2023-02-16 00:52:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 00:52:55,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-02-16 00:52:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:52:55,932 INFO L225 Difference]: With dead ends: 49 [2023-02-16 00:52:55,932 INFO L226 Difference]: Without dead ends: 29 [2023-02-16 00:52:55,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-16 00:52:55,934 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 00:52:55,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 00:52:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-16 00:52:55,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-16 00:52:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 00:52:55,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2023-02-16 00:52:55,949 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 26 [2023-02-16 00:52:55,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:52:55,949 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2023-02-16 00:52:55,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-16 00:52:55,949 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2023-02-16 00:52:55,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 00:52:55,951 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:52:55,951 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:52:55,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 00:52:55,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:52:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:52:55,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1493360828, now seen corresponding path program 1 times [2023-02-16 00:52:55,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:52:55,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012848265] [2023-02-16 00:52:55,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:55,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:52:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:52:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 00:52:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:56,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:52:56,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:52:56,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012848265] [2023-02-16 00:52:56,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012848265] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:52:56,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878549897] [2023-02-16 00:52:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:56,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:52:56,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:52:56,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:52:56,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 00:52:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:56,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 00:52:56,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:52:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 00:52:56,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 00:52:56,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878549897] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 00:52:56,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 00:52:56,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 22 [2023-02-16 00:52:56,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503200681] [2023-02-16 00:52:56,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 00:52:56,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 00:52:56,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:52:56,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 00:52:56,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2023-02-16 00:52:56,472 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 00:52:56,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:52:56,668 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2023-02-16 00:52:56,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 00:52:56,668 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-02-16 00:52:56,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:52:56,670 INFO L225 Difference]: With dead ends: 55 [2023-02-16 00:52:56,670 INFO L226 Difference]: Without dead ends: 46 [2023-02-16 00:52:56,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=857, Unknown=0, NotChecked=0, Total=992 [2023-02-16 00:52:56,677 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 52 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 00:52:56,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 114 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 00:52:56,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-16 00:52:56,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2023-02-16 00:52:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2023-02-16 00:52:56,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2023-02-16 00:52:56,690 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 26 [2023-02-16 00:52:56,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:52:56,690 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2023-02-16 00:52:56,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 9 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 00:52:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2023-02-16 00:52:56,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 00:52:56,699 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:52:56,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:52:56,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 00:52:56,900 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,SelfDestructingSolverStorable3 [2023-02-16 00:52:56,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:52:56,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:52:56,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1025994815, now seen corresponding path program 1 times [2023-02-16 00:52:56,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:52:56,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631570534] [2023-02-16 00:52:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:56,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:52:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:52:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 00:52:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:57,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-16 00:52:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 00:52:57,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:52:57,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631570534] [2023-02-16 00:52:57,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631570534] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:52:57,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159377525] [2023-02-16 00:52:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:57,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:52:57,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:52:57,137 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:52:57,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 00:52:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:57,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 00:52:57,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:52:57,336 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:52:57,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:52:57,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:52:57,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159377525] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:52:57,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:52:57,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 25 [2023-02-16 00:52:57,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038597372] [2023-02-16 00:52:57,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:52:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 00:52:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:52:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 00:52:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2023-02-16 00:52:57,557 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 00:52:57,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:52:57,976 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2023-02-16 00:52:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 00:52:57,976 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 33 [2023-02-16 00:52:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:52:57,977 INFO L225 Difference]: With dead ends: 55 [2023-02-16 00:52:57,977 INFO L226 Difference]: Without dead ends: 48 [2023-02-16 00:52:57,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2023-02-16 00:52:57,978 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 67 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:52:57,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 78 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:52:57,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-16 00:52:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-02-16 00:52:57,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-16 00:52:57,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-02-16 00:52:57,983 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 33 [2023-02-16 00:52:57,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:52:57,983 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-02-16 00:52:57,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.6956521739130435) internal successors, (39), 19 states have internal predecessors, (39), 5 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-16 00:52:57,983 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-02-16 00:52:57,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 00:52:57,984 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:52:57,984 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:52:58,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-16 00:52:58,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:52:58,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:52:58,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:52:58,192 INFO L85 PathProgramCache]: Analyzing trace with hash 216648189, now seen corresponding path program 1 times [2023-02-16 00:52:58,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:52:58,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144030579] [2023-02-16 00:52:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:58,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:52:58,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:58,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:52:58,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:58,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 00:52:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:58,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-16 00:52:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:58,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 00:52:58,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:52:58,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144030579] [2023-02-16 00:52:58,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144030579] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:52:58,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4550583] [2023-02-16 00:52:58,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:58,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:52:58,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:52:58,409 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:52:58,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 00:52:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:58,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 00:52:58,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:52:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:52:58,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:52:58,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 00:52:58,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4550583] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:52:58,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:52:58,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2023-02-16 00:52:58,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923860179] [2023-02-16 00:52:58,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:52:58,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-16 00:52:58,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:52:58,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-16 00:52:58,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=997, Unknown=0, NotChecked=0, Total=1122 [2023-02-16 00:52:58,940 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 26 states have internal predecessors, (63), 7 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-16 00:52:59,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:52:59,398 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2023-02-16 00:52:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 00:52:59,399 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 26 states have internal predecessors, (63), 7 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 33 [2023-02-16 00:52:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:52:59,399 INFO L225 Difference]: With dead ends: 57 [2023-02-16 00:52:59,399 INFO L226 Difference]: Without dead ends: 54 [2023-02-16 00:52:59,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=285, Invalid=1695, Unknown=0, NotChecked=0, Total=1980 [2023-02-16 00:52:59,401 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 118 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:52:59,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 81 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:52:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-16 00:52:59,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2023-02-16 00:52:59,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-16 00:52:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-02-16 00:52:59,406 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 33 [2023-02-16 00:52:59,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:52:59,420 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-02-16 00:52:59,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.8529411764705883) internal successors, (63), 26 states have internal predecessors, (63), 7 states have call successors, (13), 11 states have call predecessors, (13), 7 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-16 00:52:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-02-16 00:52:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-16 00:52:59,423 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:52:59,423 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:52:59,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-16 00:52:59,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:52:59,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:52:59,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:52:59,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1230299368, now seen corresponding path program 1 times [2023-02-16 00:52:59,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:52:59,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006448776] [2023-02-16 00:52:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:59,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:52:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:59,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:52:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:59,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 00:52:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:59,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-16 00:52:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:59,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-16 00:52:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-16 00:52:59,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:52:59,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006448776] [2023-02-16 00:52:59,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006448776] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:52:59,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408640950] [2023-02-16 00:52:59,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:52:59,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:52:59,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:52:59,817 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:52:59,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 00:52:59,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:52:59,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 00:52:59,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:53:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 00:53:00,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:53:00,375 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 00:53:00,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408640950] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:53:00,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:53:00,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 28 [2023-02-16 00:53:00,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436332615] [2023-02-16 00:53:00,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:53:00,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 00:53:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:53:00,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 00:53:00,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=690, Unknown=0, NotChecked=0, Total=756 [2023-02-16 00:53:00,377 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 21 states have internal predecessors, (53), 8 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-16 00:53:01,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:53:01,009 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2023-02-16 00:53:01,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 00:53:01,010 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 21 states have internal predecessors, (53), 8 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 43 [2023-02-16 00:53:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:53:01,010 INFO L225 Difference]: With dead ends: 64 [2023-02-16 00:53:01,010 INFO L226 Difference]: Without dead ends: 53 [2023-02-16 00:53:01,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 67 SyntacticMatches, 14 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=1840, Unknown=0, NotChecked=0, Total=2070 [2023-02-16 00:53:01,012 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 92 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 00:53:01,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 117 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 00:53:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-16 00:53:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2023-02-16 00:53:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-02-16 00:53:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2023-02-16 00:53:01,016 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 43 [2023-02-16 00:53:01,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:53:01,016 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2023-02-16 00:53:01,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.962962962962963) internal successors, (53), 21 states have internal predecessors, (53), 8 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-16 00:53:01,016 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2023-02-16 00:53:01,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-16 00:53:01,022 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:53:01,022 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:53:01,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-16 00:53:01,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:53:01,226 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:53:01,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:53:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1289660566, now seen corresponding path program 1 times [2023-02-16 00:53:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:53:01,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832923402] [2023-02-16 00:53:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:53:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:53:01,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:53:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 00:53:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:01,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-16 00:53:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:01,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-16 00:53:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 00:53:01,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:53:01,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832923402] [2023-02-16 00:53:01,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832923402] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:53:01,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387172790] [2023-02-16 00:53:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:53:01,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:53:01,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:53:01,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:53:01,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 00:53:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:01,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 00:53:01,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:53:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 00:53:01,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:53:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 00:53:01,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387172790] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:53:01,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:53:01,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 25 [2023-02-16 00:53:01,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080051182] [2023-02-16 00:53:01,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:53:01,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-16 00:53:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:53:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-16 00:53:01,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2023-02-16 00:53:01,859 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 25 states, 24 states have (on average 2.0) internal successors, (48), 20 states have internal predecessors, (48), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 00:53:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:53:02,223 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2023-02-16 00:53:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 00:53:02,223 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.0) internal successors, (48), 20 states have internal predecessors, (48), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2023-02-16 00:53:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:53:02,224 INFO L225 Difference]: With dead ends: 53 [2023-02-16 00:53:02,224 INFO L226 Difference]: Without dead ends: 37 [2023-02-16 00:53:02,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 71 SyntacticMatches, 15 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2023-02-16 00:53:02,225 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:53:02,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 107 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:53:02,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-16 00:53:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-16 00:53:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 00:53:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2023-02-16 00:53:02,228 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 43 [2023-02-16 00:53:02,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:53:02,228 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2023-02-16 00:53:02,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.0) internal successors, (48), 20 states have internal predecessors, (48), 5 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 00:53:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2023-02-16 00:53:02,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-16 00:53:02,229 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 00:53:02,229 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:53:02,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 00:53:02,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:53:02,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 00:53:02,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 00:53:02,434 INFO L85 PathProgramCache]: Analyzing trace with hash -588595988, now seen corresponding path program 1 times [2023-02-16 00:53:02,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 00:53:02,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379937182] [2023-02-16 00:53:02,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:53:02,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 00:53:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:02,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-16 00:53:02,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:02,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-02-16 00:53:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:02,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-16 00:53:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:02,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-02-16 00:53:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-16 00:53:02,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 00:53:02,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379937182] [2023-02-16 00:53:02,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379937182] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 00:53:02,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500103457] [2023-02-16 00:53:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 00:53:02,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:53:02,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 00:53:02,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 00:53:02,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 00:53:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 00:53:02,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-16 00:53:02,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 00:53:02,913 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-16 00:53:02,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 00:53:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-16 00:53:03,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500103457] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 00:53:03,004 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 00:53:03,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7, 7] total 24 [2023-02-16 00:53:03,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355000983] [2023-02-16 00:53:03,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 00:53:03,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 00:53:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 00:53:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 00:53:03,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2023-02-16 00:53:03,010 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 19 states have internal predecessors, (56), 8 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-16 00:53:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 00:53:03,396 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2023-02-16 00:53:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 00:53:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 19 states have internal predecessors, (56), 8 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) Word has length 43 [2023-02-16 00:53:03,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 00:53:03,397 INFO L225 Difference]: With dead ends: 44 [2023-02-16 00:53:03,397 INFO L226 Difference]: Without dead ends: 0 [2023-02-16 00:53:03,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2023-02-16 00:53:03,401 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 46 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 00:53:03,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 68 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 00:53:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-16 00:53:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-16 00:53:03,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 00:53:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-16 00:53:03,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2023-02-16 00:53:03,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 00:53:03,402 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-16 00:53:03,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 19 states have internal predecessors, (56), 8 states have call successors, (11), 5 states have call predecessors, (11), 7 states have return successors, (8), 5 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-16 00:53:03,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-16 00:53:03,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-16 00:53:03,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 00:53:03,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-16 00:53:03,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 00:53:03,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-16 00:53:04,030 INFO L899 garLoopResultBuilder]: For program point my_mallocFINAL(lines 528 530) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L895 garLoopResultBuilder]: At program point __getMemory_returnLabel#1(lines 520 527) the Hoare annotation is: (let ((.cse0 (not (= |my_malloc_#in~size#1| 8)))) (and (or (= |my_malloc___getMemory_~size#1| 8) .cse0) (or (and (<= |my_malloc___getMemory_#res#1.base| 0) (<= 0 |my_malloc___getMemory_#res#1.offset|) (<= |my_malloc___getMemory_#res#1.offset| 0) (<= 0 |my_malloc___getMemory_#res#1.base|)) (not (<= 0 |old(~guard_malloc_counter~0.offset)|)) (not (<= |old(~guard_malloc_counter~0.offset)| 1)) (not (<= ~elem~0.offset 0)) .cse0 (let ((.cse1 (+ |old(~guard_malloc_counter~0.offset)| 1))) (and (<= .cse1 ~guard_malloc_counter~0.offset) (<= |my_malloc___getMemory_#res#1.offset| .cse1) (<= ~guard_malloc_counter~0.offset |my_malloc___getMemory_#res#1.offset|)))))) [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point L524(lines 524 525) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point L522(line 522) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 528 530) the Hoare annotation is: (or (and (= ~guard_malloc_counter~0.base |old(~guard_malloc_counter~0.base)|) (= ~guard_malloc_counter~0.offset |old(~guard_malloc_counter~0.offset)|)) (not (= |my_malloc_#in~size#1| 8))) [2023-02-16 00:53:04,031 INFO L895 garLoopResultBuilder]: At program point L522-2(line 522) the Hoare annotation is: (not (= |my_malloc_#in~size#1| 8)) [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point L522-3(line 522) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point my_mallocEXIT(lines 528 530) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point L537(lines 537 538) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point L536(line 536) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point L537-2(lines 535 539) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L895 garLoopResultBuilder]: At program point L536-2(line 536) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~guard_malloc_counter~0.offset)))) (and (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|))) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse0))) [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point L536-3(line 536) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 535 539) the Hoare annotation is: (let ((.cse0 (not (<= 1 ~guard_malloc_counter~0.offset))) (.cse1 (and (= ~elem~0.base |old(~elem~0.base)|) (= ~elem~0.offset |old(~elem~0.offset)|)))) (and (or .cse0 (not (<= (+ |list_add_#in~new.offset| 1) |old(~elem~0.offset)|)) .cse1) (or (not (<= (+ |old(~elem~0.offset)| 1) |list_add_#in~new.offset|)) .cse0 .cse1))) [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point list_addEXIT(lines 535 539) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L902 garLoopResultBuilder]: At program point ERROR(lines 4 7) the Hoare annotation is: true [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2023-02-16 00:53:04,031 INFO L899 garLoopResultBuilder]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point L541(lines 541 542) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 545 556) the Hoare annotation is: true [2023-02-16 00:53:04,032 INFO L895 garLoopResultBuilder]: At program point L550(line 550) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) (<= |ULTIMATE.start_main_~dev2~0#1.offset| 2) (<= (+ |ULTIMATE.start_main_~dev1~0#1.offset| 1) |ULTIMATE.start_main_~dev2~0#1.offset|) (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset) (= ~elem~0.offset 0)) [2023-02-16 00:53:04,032 INFO L895 garLoopResultBuilder]: At program point L550-1(line 550) the Hoare annotation is: (let ((.cse0 (<= (+ |ULTIMATE.start_main_~dev1~0#1.offset| 1) |ULTIMATE.start_main_~dev2~0#1.offset|))) (or (and (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) .cse0 (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset) (= ~elem~0.offset 0)) (and (<= 1 ~guard_malloc_counter~0.offset) (= ~elem~0.offset |ULTIMATE.start_main_~dev2~0#1.offset|) (<= |ULTIMATE.start_main_~dev2~0#1.offset| 2) .cse0 (<= 2 |ULTIMATE.start_main_~dev2~0#1.offset|) (= |ULTIMATE.start_main_~dev2~0#1.base| ~elem~0.base)))) [2023-02-16 00:53:04,032 INFO L895 garLoopResultBuilder]: At program point L548(line 548) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~dev1~0#1.base| 0) (= |ULTIMATE.start_main_~dev1~0#1.offset| 0)) (and (<= ~guard_malloc_counter~0.offset 1) (<= 1 |ULTIMATE.start_main_~dev1~0#1.offset|) (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset) (= ~elem~0.offset 0))) [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point L548-1(line 548) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point L540(lines 540 543) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L895 garLoopResultBuilder]: At program point L553(line 553) the Hoare annotation is: (let ((.cse0 (<= 1 ~guard_malloc_counter~0.offset)) (.cse1 (<= 2 |ULTIMATE.start_main_~dev2~0#1.offset|))) (or (and .cse0 (<= (+ ~elem~0.offset 1) |ULTIMATE.start_main_~dev2~0#1.offset|) (<= (+ |ULTIMATE.start_main_~dev1~0#1.offset| 1) |ULTIMATE.start_main_~dev2~0#1.offset|) .cse1 (<= |ULTIMATE.start_main_~dev1~0#1.offset| ~guard_malloc_counter~0.offset)) (and (<= ~elem~0.offset 0) .cse0 .cse1))) [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point L551(line 551) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point L549(lines 549 554) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point L549-1(lines 549 554) no Hoare annotation was computed. [2023-02-16 00:53:04,032 INFO L895 garLoopResultBuilder]: At program point L547(line 547) the Hoare annotation is: (and (= ~guard_malloc_counter~0.offset 0) (= ~elem~0.offset 0)) [2023-02-16 00:53:04,032 INFO L899 garLoopResultBuilder]: For program point L547-1(line 547) no Hoare annotation was computed. [2023-02-16 00:53:04,035 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 00:53:04,036 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 00:53:04,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 12:53:04 BoogieIcfgContainer [2023-02-16 00:53:04,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 00:53:04,061 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 00:53:04,061 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 00:53:04,061 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 00:53:04,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 12:52:54" (3/4) ... [2023-02-16 00:53:04,063 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-16 00:53:04,067 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_malloc [2023-02-16 00:53:04,067 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure list_add [2023-02-16 00:53:04,068 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __blast_assert [2023-02-16 00:53:04,071 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-02-16 00:53:04,071 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-02-16 00:53:04,071 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-16 00:53:04,071 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-16 00:53:04,093 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (size == 8 || !(\old(size) == 8)) && ((((((((\result <= 0 && 0 <= \result) && \result <= 0) && 0 <= \result) || !(0 <= \old(guard_malloc_counter))) || !(\old(guard_malloc_counter) <= 1)) || !(elem <= 0)) || !(\old(size) == 8)) || ((\old(guard_malloc_counter) + 1 <= guard_malloc_counter && \result <= \old(guard_malloc_counter) + 1) && guard_malloc_counter <= \result)) [2023-02-16 00:53:04,103 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 00:53:04,104 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 00:53:04,104 INFO L158 Benchmark]: Toolchain (without parser) took 10418.25ms. Allocated memory was 107.0MB in the beginning and 172.0MB in the end (delta: 65.0MB). Free memory was 72.5MB in the beginning and 62.1MB in the end (delta: 10.4MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. [2023-02-16 00:53:04,104 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 00:53:04,104 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.48ms. Allocated memory is still 107.0MB. Free memory was 72.2MB in the beginning and 55.7MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-02-16 00:53:04,105 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.86ms. Allocated memory is still 107.0MB. Free memory was 55.7MB in the beginning and 53.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 00:53:04,105 INFO L158 Benchmark]: Boogie Preprocessor took 30.33ms. Allocated memory is still 107.0MB. Free memory was 53.7MB in the beginning and 52.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 00:53:04,105 INFO L158 Benchmark]: RCFGBuilder took 298.45ms. Allocated memory is still 107.0MB. Free memory was 52.4MB in the beginning and 75.3MB in the end (delta: -22.9MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2023-02-16 00:53:04,105 INFO L158 Benchmark]: TraceAbstraction took 9695.39ms. Allocated memory was 107.0MB in the beginning and 172.0MB in the end (delta: 65.0MB). Free memory was 74.6MB in the beginning and 65.3MB in the end (delta: 9.3MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2023-02-16 00:53:04,106 INFO L158 Benchmark]: Witness Printer took 42.48ms. Allocated memory is still 172.0MB. Free memory was 65.3MB in the beginning and 62.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-16 00:53:04,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.48ms. Allocated memory is still 107.0MB. Free memory was 72.2MB in the beginning and 55.7MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.86ms. Allocated memory is still 107.0MB. Free memory was 55.7MB in the beginning and 53.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.33ms. Allocated memory is still 107.0MB. Free memory was 53.7MB in the beginning and 52.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 298.45ms. Allocated memory is still 107.0MB. Free memory was 52.4MB in the beginning and 75.3MB in the end (delta: -22.9MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9695.39ms. Allocated memory was 107.0MB in the beginning and 172.0MB in the end (delta: 65.0MB). Free memory was 74.6MB in the beginning and 65.3MB in the end (delta: 9.3MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. * Witness Printer took 42.48ms. Allocated memory is still 172.0MB. Free memory was 65.3MB in the beginning and 62.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 458 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 458 mSDsluCounter, 869 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 712 mSDsCounter, 156 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3316 IncrementalHoareTripleChecker+Invalid, 3472 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 156 mSolverCounterUnsat, 157 mSDtfsCounter, 3316 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 685 GetRequests, 398 SyntacticMatches, 50 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1301 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, InterpolantAutomatonStates: 119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 29 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 62 PreInvPairs, 77 NumberOfFragments, 245 HoareAnnotationTreeSize, 62 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 2161 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 527 NumberOfCodeBlocks, 527 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 726 ConstructedInterpolants, 0 QuantifiedInterpolants, 2753 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1467 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 22 InterpolantComputations, 3 PerfectInterpolantSequences, 151/249 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 545]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 520]: Loop Invariant Derived loop invariant: (size == 8 || !(\old(size) == 8)) && ((((((((\result <= 0 && 0 <= \result) && \result <= 0) && 0 <= \result) || !(0 <= \old(guard_malloc_counter))) || !(\old(guard_malloc_counter) <= 1)) || !(elem <= 0)) || !(\old(size) == 8)) || ((\old(guard_malloc_counter) + 1 <= guard_malloc_counter && \result <= \old(guard_malloc_counter) + 1) && guard_malloc_counter <= \result)) RESULT: Ultimate proved your program to be correct! [2023-02-16 00:53:04,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE