./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.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 aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 09:51:41,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 09:51:41,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 09:51:41,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 09:51:41,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 09:51:41,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 09:51:41,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 09:51:41,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 09:51:41,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 09:51:41,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 09:51:41,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 09:51:41,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 09:51:41,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 09:51:41,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 09:51:41,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 09:51:41,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 09:51:41,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 09:51:41,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 09:51:41,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 09:51:41,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 09:51:41,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 09:51:41,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 09:51:41,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 09:51:41,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 09:51:41,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 09:51:41,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 09:51:41,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 09:51:41,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 09:51:41,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 09:51:41,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 09:51:41,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 09:51:41,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 09:51:41,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 09:51:41,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 09:51:41,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 09:51:41,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 09:51:41,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 09:51:41,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 09:51:41,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 09:51:41,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 09:51:41,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 09:51:41,562 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 09:51:41,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 09:51:41,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 09:51:41,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 09:51:41,584 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 09:51:41,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 09:51:41,585 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 09:51:41,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 09:51:41,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 09:51:41,586 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 09:51:41,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 09:51:41,587 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 09:51:41,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 09:51:41,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 09:51:41,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 09:51:41,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 09:51:41,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 09:51:41,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 09:51:41,588 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 09:51:41,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 09:51:41,588 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 09:51:41,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 09:51:41,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 09:51:41,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 09:51:41,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 09:51:41,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 09:51:41,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 09:51:41,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 09:51:41,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 09:51:41,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 09:51:41,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 09:51:41,590 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 09:51:41,590 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 09:51:41,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 09:51:41,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 09:51:41,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa70df64230ecddb2965be82bddd3a5869e70ae49ad8ed2ef9f27fa2ce4c5f93 [2021-12-21 09:51:41,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 09:51:41,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 09:51:41,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 09:51:41,799 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 09:51:41,799 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 09:51:41,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2021-12-21 09:51:41,874 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a01c1c7/914d8f04088041cfa51e605ce1ffd795/FLAG994e0a700 [2021-12-21 09:51:42,226 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 09:51:42,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i [2021-12-21 09:51:42,231 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a01c1c7/914d8f04088041cfa51e605ce1ffd795/FLAG994e0a700 [2021-12-21 09:51:42,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a01c1c7/914d8f04088041cfa51e605ce1ffd795 [2021-12-21 09:51:42,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 09:51:42,658 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 09:51:42,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 09:51:42,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 09:51:42,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 09:51:42,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:51:42" (1/1) ... [2021-12-21 09:51:42,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cbce54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:42, skipping insertion in model container [2021-12-21 09:51:42,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 09:51:42" (1/1) ... [2021-12-21 09:51:42,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 09:51:42,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 09:51:42,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2021-12-21 09:51:42,841 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 09:51:44,156 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 09:51:44,165 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_of_struct_single_elem_init.i[865,878] [2021-12-21 09:51:44,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 09:51:44,197 INFO L208 MainTranslator]: Completed translation [2021-12-21 09:51:44,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44 WrapperNode [2021-12-21 09:51:44,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 09:51:44,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 09:51:44,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 09:51:44,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 09:51:44,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,225 INFO L137 Inliner]: procedures = 16, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2021-12-21 09:51:44,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 09:51:44,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 09:51:44,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 09:51:44,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 09:51:44,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 09:51:44,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 09:51:44,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 09:51:44,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 09:51:44,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (1/1) ... [2021-12-21 09:51:44,267 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 09:51:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:51:44,296 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) [2021-12-21 09:51:44,316 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 [2021-12-21 09:51:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 09:51:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 09:51:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 09:51:44,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 09:51:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 09:51:44,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 09:51:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 09:51:44,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 09:51:44,374 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 09:51:44,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 09:51:44,520 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 09:51:44,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 09:51:44,534 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 09:51:44,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:51:44 BoogieIcfgContainer [2021-12-21 09:51:44,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 09:51:44,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 09:51:44,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 09:51:44,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 09:51:44,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 09:51:42" (1/3) ... [2021-12-21 09:51:44,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f8a880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:51:44, skipping insertion in model container [2021-12-21 09:51:44,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 09:51:44" (2/3) ... [2021-12-21 09:51:44,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60f8a880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 09:51:44, skipping insertion in model container [2021-12-21 09:51:44,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 09:51:44" (3/3) ... [2021-12-21 09:51:44,556 INFO L111 eAbstractionObserver]: Analyzing ICFG array_of_struct_single_elem_init.i [2021-12-21 09:51:44,559 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 09:51:44,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 09:51:44,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 09:51:44,618 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 09:51:44,618 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 09:51:44,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 09:51:44,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 09:51:44,640 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:44,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:44,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:44,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:44,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1140000322, now seen corresponding path program 1 times [2021-12-21 09:51:44,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:44,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114096013] [2021-12-21 09:51:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:44,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:44,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:44,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114096013] [2021-12-21 09:51:44,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114096013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 09:51:44,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 09:51:44,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 09:51:44,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251917704] [2021-12-21 09:51:44,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 09:51:44,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 09:51:44,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:51:44,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 09:51:44,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 09:51:44,804 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 09:51:44,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:51:44,814 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2021-12-21 09:51:44,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 09:51:44,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 09:51:44,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:51:44,821 INFO L225 Difference]: With dead ends: 32 [2021-12-21 09:51:44,822 INFO L226 Difference]: Without dead ends: 15 [2021-12-21 09:51:44,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 09:51:44,831 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 09:51:44,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 09:51:44,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-21 09:51:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-12-21 09:51:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2021-12-21 09:51:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-12-21 09:51:44,854 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 9 [2021-12-21 09:51:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:51:44,857 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-12-21 09:51:44,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 09:51:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-12-21 09:51:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-21 09:51:44,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:44,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:44,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 09:51:44,864 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:44,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:44,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1807612939, now seen corresponding path program 1 times [2021-12-21 09:51:44,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:44,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603713834] [2021-12-21 09:51:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:44,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:44,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:44,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603713834] [2021-12-21 09:51:44,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603713834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 09:51:44,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 09:51:44,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 09:51:44,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711197486] [2021-12-21 09:51:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 09:51:44,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 09:51:44,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:51:44,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 09:51:44,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 09:51:44,938 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 09:51:44,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:51:44,969 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-12-21 09:51:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 09:51:44,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-21 09:51:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:51:44,970 INFO L225 Difference]: With dead ends: 36 [2021-12-21 09:51:44,970 INFO L226 Difference]: Without dead ends: 27 [2021-12-21 09:51:44,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 09:51:44,971 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 09:51:44,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 25 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 09:51:44,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-21 09:51:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16. [2021-12-21 09:51:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 09:51:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2021-12-21 09:51:44,975 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 9 [2021-12-21 09:51:44,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:51:44,975 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2021-12-21 09:51:44,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 09:51:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2021-12-21 09:51:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-21 09:51:44,976 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:44,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:44,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 09:51:44,977 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:44,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:44,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2006795472, now seen corresponding path program 1 times [2021-12-21 09:51:44,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:44,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697904885] [2021-12-21 09:51:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:44,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:45,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:45,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:45,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697904885] [2021-12-21 09:51:45,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697904885] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 09:51:45,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902244402] [2021-12-21 09:51:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:45,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:45,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:51:45,021 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) [2021-12-21 09:51:45,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 09:51:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:45,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 09:51:45,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 09:51:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:45,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 09:51:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:45,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902244402] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 09:51:45,233 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 09:51:45,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-21 09:51:45,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920905457] [2021-12-21 09:51:45,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 09:51:45,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 09:51:45,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:51:45,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 09:51:45,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-21 09:51:45,235 INFO L87 Difference]: Start difference. First operand 16 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-12-21 09:51:45,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:51:45,277 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2021-12-21 09:51:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 09:51:45,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-21 09:51:45,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:51:45,278 INFO L225 Difference]: With dead ends: 62 [2021-12-21 09:51:45,278 INFO L226 Difference]: Without dead ends: 53 [2021-12-21 09:51:45,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-21 09:51:45,280 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 62 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 09:51:45,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 57 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 09:51:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-21 09:51:45,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28. [2021-12-21 09:51:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 09:51:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-12-21 09:51:45,284 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 13 [2021-12-21 09:51:45,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:51:45,285 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-21 09:51:45,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 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) [2021-12-21 09:51:45,285 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-12-21 09:51:45,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-21 09:51:45,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:45,286 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:45,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 09:51:45,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:45,511 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:45,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash -741908511, now seen corresponding path program 2 times [2021-12-21 09:51:45,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:45,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970759422] [2021-12-21 09:51:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:45,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:45,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:45,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970759422] [2021-12-21 09:51:45,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970759422] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 09:51:45,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332194151] [2021-12-21 09:51:45,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 09:51:45,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:45,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:51:45,675 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) [2021-12-21 09:51:45,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 09:51:45,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-21 09:51:45,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 09:51:45,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-21 09:51:45,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 09:51:45,813 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:45,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 09:51:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:45,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332194151] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 09:51:45,894 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 09:51:45,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-21 09:51:45,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961383161] [2021-12-21 09:51:45,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 09:51:45,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-21 09:51:45,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:51:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-21 09:51:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-21 09:51:45,896 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 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) [2021-12-21 09:51:45,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:51:45,980 INFO L93 Difference]: Finished difference Result 134 states and 173 transitions. [2021-12-21 09:51:45,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 09:51:45,981 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-21 09:51:45,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:51:45,982 INFO L225 Difference]: With dead ends: 134 [2021-12-21 09:51:45,982 INFO L226 Difference]: Without dead ends: 125 [2021-12-21 09:51:45,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-21 09:51:45,983 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 265 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 09:51:45,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 117 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 09:51:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-12-21 09:51:45,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 52. [2021-12-21 09:51:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 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) [2021-12-21 09:51:45,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2021-12-21 09:51:45,990 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 25 [2021-12-21 09:51:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:51:45,991 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2021-12-21 09:51:45,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 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) [2021-12-21 09:51:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2021-12-21 09:51:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-21 09:51:45,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:45,992 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:46,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 09:51:46,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-21 09:51:46,213 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:46,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:46,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1207212861, now seen corresponding path program 3 times [2021-12-21 09:51:46,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:46,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115457332] [2021-12-21 09:51:46,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:46,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:46,393 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:46,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:46,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115457332] [2021-12-21 09:51:46,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115457332] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 09:51:46,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009579032] [2021-12-21 09:51:46,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-21 09:51:46,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:46,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:51:46,395 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) [2021-12-21 09:51:46,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 09:51:53,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-21 09:51:53,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 09:51:53,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-21 09:51:53,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 09:51:53,753 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:53,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 09:51:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:53,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009579032] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 09:51:53,962 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 09:51:53,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-12-21 09:51:53,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851931017] [2021-12-21 09:51:53,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 09:51:53,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-21 09:51:53,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:51:53,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-21 09:51:53,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-21 09:51:53,965 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 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) [2021-12-21 09:51:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:51:54,137 INFO L93 Difference]: Finished difference Result 278 states and 359 transitions. [2021-12-21 09:51:54,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-21 09:51:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-21 09:51:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:51:54,139 INFO L225 Difference]: With dead ends: 278 [2021-12-21 09:51:54,140 INFO L226 Difference]: Without dead ends: 269 [2021-12-21 09:51:54,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-21 09:51:54,141 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 899 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 09:51:54,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 235 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 09:51:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2021-12-21 09:51:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 100. [2021-12-21 09:51:54,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 99 states have internal predecessors, (125), 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) [2021-12-21 09:51:54,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2021-12-21 09:51:54,151 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 49 [2021-12-21 09:51:54,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:51:54,151 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2021-12-21 09:51:54,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 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) [2021-12-21 09:51:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2021-12-21 09:51:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 09:51:54,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:51:54,153 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:51:54,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 09:51:54,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:54,375 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:51:54,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:51:54,376 INFO L85 PathProgramCache]: Analyzing trace with hash 239950983, now seen corresponding path program 4 times [2021-12-21 09:51:54,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:51:54,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070645735] [2021-12-21 09:51:54,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:51:54,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:51:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:51:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:51:54,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:51:54,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070645735] [2021-12-21 09:51:54,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070645735] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 09:51:54,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860731933] [2021-12-21 09:51:54,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-21 09:51:54,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:51:54,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:51:54,788 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) [2021-12-21 09:51:54,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 09:52:29,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-21 09:52:29,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 09:52:29,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 998 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 09:52:29,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 09:52:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:52:29,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 09:52:30,165 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:52:30,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860731933] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 09:52:30,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 09:52:30,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-12-21 09:52:30,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822801059] [2021-12-21 09:52:30,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 09:52:30,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-21 09:52:30,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 09:52:30,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-21 09:52:30,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-12-21 09:52:30,173 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 49 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 49 states have internal predecessors, (192), 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) [2021-12-21 09:52:30,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 09:52:30,699 INFO L93 Difference]: Finished difference Result 566 states and 731 transitions. [2021-12-21 09:52:30,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-21 09:52:30,699 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 49 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-21 09:52:30,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 09:52:30,704 INFO L225 Difference]: With dead ends: 566 [2021-12-21 09:52:30,705 INFO L226 Difference]: Without dead ends: 557 [2021-12-21 09:52:30,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-12-21 09:52:30,706 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 1717 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 09:52:30,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1717 Valid, 477 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 09:52:30,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2021-12-21 09:52:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 196. [2021-12-21 09:52:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.2564102564102564) internal successors, (245), 195 states have internal predecessors, (245), 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) [2021-12-21 09:52:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 245 transitions. [2021-12-21 09:52:30,719 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 245 transitions. Word has length 97 [2021-12-21 09:52:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 09:52:30,719 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 245 transitions. [2021-12-21 09:52:30,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 49 states have internal predecessors, (192), 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) [2021-12-21 09:52:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 245 transitions. [2021-12-21 09:52:30,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-21 09:52:30,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 09:52:30,724 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 09:52:30,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 09:52:30,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:52:30,933 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 09:52:30,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 09:52:30,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1120861169, now seen corresponding path program 5 times [2021-12-21 09:52:30,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 09:52:30,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759572930] [2021-12-21 09:52:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 09:52:30,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 09:52:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 09:52:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 09:52:32,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 09:52:32,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759572930] [2021-12-21 09:52:32,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759572930] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 09:52:32,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586135799] [2021-12-21 09:52:32,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-21 09:52:32,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 09:52:32,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 09:52:32,095 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) [2021-12-21 09:52:32,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process