./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init8_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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-examples/standard_init8_ground-2.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 304c65cce38dcde111270a7f4e691d93e4778f0053e0e11304f731e521a0e8b2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-20 20:40:30,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 20:40:30,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 20:40:30,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 20:40:30,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 20:40:30,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 20:40:30,377 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 20:40:30,379 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 20:40:30,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 20:40:30,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 20:40:30,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 20:40:30,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 20:40:30,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 20:40:30,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 20:40:30,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 20:40:30,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 20:40:30,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 20:40:30,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 20:40:30,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 20:40:30,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 20:40:30,399 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 20:40:30,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 20:40:30,400 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 20:40:30,401 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 20:40:30,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 20:40:30,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 20:40:30,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 20:40:30,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 20:40:30,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 20:40:30,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 20:40:30,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 20:40:30,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 20:40:30,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 20:40:30,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 20:40:30,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 20:40:30,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 20:40:30,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 20:40:30,414 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 20:40:30,414 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 20:40:30,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 20:40:30,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 20:40:30,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 20:40:30,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-20 20:40:30,439 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 20:40:30,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 20:40:30,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 20:40:30,440 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 20:40:30,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 20:40:30,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 20:40:30,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 20:40:30,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 20:40:30,441 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 20:40:30,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 20:40:30,442 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-20 20:40:30,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 20:40:30,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-20 20:40:30,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 20:40:30,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 20:40:30,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 20:40:30,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 20:40:30,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-20 20:40:30,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 20:40:30,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 20:40:30,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 20:40:30,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 20:40:30,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 20:40:30,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 20:40:30,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 20:40:30,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 20:40:30,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 20:40:30,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 20:40:30,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 20:40:30,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 20:40:30,446 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 20:40:30,447 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 20:40:30,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 20:40:30,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 304c65cce38dcde111270a7f4e691d93e4778f0053e0e11304f731e521a0e8b2 [2022-07-20 20:40:30,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 20:40:30,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 20:40:30,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 20:40:30,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 20:40:30,698 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 20:40:30,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init8_ground-2.i [2022-07-20 20:40:30,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/718abb50b/92332099ab30485a926d50fe6e9d4e31/FLAG608655621 [2022-07-20 20:40:31,112 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 20:40:31,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init8_ground-2.i [2022-07-20 20:40:31,118 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/718abb50b/92332099ab30485a926d50fe6e9d4e31/FLAG608655621 [2022-07-20 20:40:31,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/718abb50b/92332099ab30485a926d50fe6e9d4e31 [2022-07-20 20:40:31,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 20:40:31,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 20:40:31,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 20:40:31,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 20:40:31,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 20:40:31,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adda18f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31, skipping insertion in model container [2022-07-20 20:40:31,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 20:40:31,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 20:40:31,279 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-examples/standard_init8_ground-2.i[816,829] [2022-07-20 20:40:31,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 20:40:31,308 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 20:40:31,317 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-examples/standard_init8_ground-2.i[816,829] [2022-07-20 20:40:31,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 20:40:31,331 INFO L208 MainTranslator]: Completed translation [2022-07-20 20:40:31,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31 WrapperNode [2022-07-20 20:40:31,340 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 20:40:31,341 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 20:40:31,341 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 20:40:31,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 20:40:31,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,390 INFO L137 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-07-20 20:40:31,390 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 20:40:31,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 20:40:31,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 20:40:31,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 20:40:31,397 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,407 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 20:40:31,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 20:40:31,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 20:40:31,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 20:40:31,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (1/1) ... [2022-07-20 20:40:31,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 20:40:31,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:31,451 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) [2022-07-20 20:40:31,453 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 [2022-07-20 20:40:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 20:40:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-20 20:40:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 20:40:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-20 20:40:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 20:40:31,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 20:40:31,488 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-20 20:40:31,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 20:40:31,536 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 20:40:31,538 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 20:40:31,662 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 20:40:31,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 20:40:31,666 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-07-20 20:40:31,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:40:31 BoogieIcfgContainer [2022-07-20 20:40:31,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 20:40:31,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 20:40:31,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 20:40:31,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 20:40:31,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 08:40:31" (1/3) ... [2022-07-20 20:40:31,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b023e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:40:31, skipping insertion in model container [2022-07-20 20:40:31,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 08:40:31" (2/3) ... [2022-07-20 20:40:31,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b023e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 08:40:31, skipping insertion in model container [2022-07-20 20:40:31,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 08:40:31" (3/3) ... [2022-07-20 20:40:31,674 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init8_ground-2.i [2022-07-20 20:40:31,683 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 20:40:31,683 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 20:40:31,716 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 20:40:31,721 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7363cb72, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f76f45c [2022-07-20 20:40:31,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 20:40:31,725 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 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) [2022-07-20 20:40:31,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-20 20:40:31,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:31,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:31,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:31,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:31,734 INFO L85 PathProgramCache]: Analyzing trace with hash 730030661, now seen corresponding path program 1 times [2022-07-20 20:40:31,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:31,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41251065] [2022-07-20 20:40:31,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:31,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 20:40:31,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:31,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41251065] [2022-07-20 20:40:31,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41251065] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 20:40:31,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 20:40:31,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 20:40:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823596568] [2022-07-20 20:40:31,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 20:40:31,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 20:40:31,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:31,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 20:40:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 20:40:31,859 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 27 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2022-07-20 20:40:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:31,919 INFO L93 Difference]: Finished difference Result 61 states and 111 transitions. [2022-07-20 20:40:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 20:40:31,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-20 20:40:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:31,927 INFO L225 Difference]: With dead ends: 61 [2022-07-20 20:40:31,927 INFO L226 Difference]: Without dead ends: 32 [2022-07-20 20:40:31,931 INFO L412 NwaCegarLoop]: 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 [2022-07-20 20:40:31,937 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:31,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 20:40:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-07-20 20:40:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-07-20 20:40:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2022-07-20 20:40:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-07-20 20:40:31,964 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 21 [2022-07-20 20:40:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:31,964 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-07-20 20:40:31,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2022-07-20 20:40:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-07-20 20:40:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-20 20:40:31,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:31,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:31,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-20 20:40:31,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:31,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:31,969 INFO L85 PathProgramCache]: Analyzing trace with hash 798141757, now seen corresponding path program 1 times [2022-07-20 20:40:31,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:31,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518671603] [2022-07-20 20:40:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:31,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:32,035 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 20:40:32,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:32,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518671603] [2022-07-20 20:40:32,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518671603] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:32,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672199458] [2022-07-20 20:40:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:32,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:32,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:32,039 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) [2022-07-20 20:40:32,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-20 20:40:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:32,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-20 20:40:32,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:40:32,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 20:40:32,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:40:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-20 20:40:32,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672199458] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:40:32,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:40:32,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-07-20 20:40:32,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178453405] [2022-07-20 20:40:32,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:40:32,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-20 20:40:32,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:32,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-20 20:40:32,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-20 20:40:32,164 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2022-07-20 20:40:32,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:32,254 INFO L93 Difference]: Finished difference Result 84 states and 123 transitions. [2022-07-20 20:40:32,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 20:40:32,254 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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 29 [2022-07-20 20:40:32,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:32,255 INFO L225 Difference]: With dead ends: 84 [2022-07-20 20:40:32,255 INFO L226 Difference]: Without dead ends: 56 [2022-07-20 20:40:32,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-07-20 20:40:32,257 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:32,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 20:40:32,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-07-20 20:40:32,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-07-20 20:40:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 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) [2022-07-20 20:40:32,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-07-20 20:40:32,265 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 29 [2022-07-20 20:40:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:32,265 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-07-20 20:40:32,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2022-07-20 20:40:32,265 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-07-20 20:40:32,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-20 20:40:32,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:32,266 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:32,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-20 20:40:32,483 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 [2022-07-20 20:40:32,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:32,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:32,485 INFO L85 PathProgramCache]: Analyzing trace with hash -33175999, now seen corresponding path program 2 times [2022-07-20 20:40:32,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:32,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687907171] [2022-07-20 20:40:32,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:32,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:32,689 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-20 20:40:32,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687907171] [2022-07-20 20:40:32,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687907171] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:32,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301241817] [2022-07-20 20:40:32,690 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 20:40:32,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:32,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:32,692 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) [2022-07-20 20:40:32,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-20 20:40:32,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-20 20:40:32,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 20:40:32,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 20:40:32,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:40:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-20 20:40:32,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:40:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-20 20:40:32,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301241817] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:40:32,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:40:32,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-07-20 20:40:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527370637] [2022-07-20 20:40:32,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:40:32,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 20:40:32,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 20:40:32,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-20 20:40:32,909 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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) [2022-07-20 20:40:33,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:33,081 INFO L93 Difference]: Finished difference Result 153 states and 216 transitions. [2022-07-20 20:40:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-20 20:40:33,081 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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 53 [2022-07-20 20:40:33,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:33,083 INFO L225 Difference]: With dead ends: 153 [2022-07-20 20:40:33,083 INFO L226 Difference]: Without dead ends: 104 [2022-07-20 20:40:33,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-07-20 20:40:33,084 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:33,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 20:40:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-07-20 20:40:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-07-20 20:40:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.087378640776699) internal successors, (112), 103 states have internal predecessors, (112), 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) [2022-07-20 20:40:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2022-07-20 20:40:33,101 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 53 [2022-07-20 20:40:33,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:33,102 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2022-07-20 20:40:33,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 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) [2022-07-20 20:40:33,102 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2022-07-20 20:40:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-20 20:40:33,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:33,104 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:33,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-20 20:40:33,306 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,SelfDestructingSolverStorable2 [2022-07-20 20:40:33,307 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:33,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1782471873, now seen corresponding path program 3 times [2022-07-20 20:40:33,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:33,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265108673] [2022-07-20 20:40:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:33,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:33,605 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-07-20 20:40:33,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:33,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265108673] [2022-07-20 20:40:33,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265108673] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:33,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945313802] [2022-07-20 20:40:33,608 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-20 20:40:33,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:33,614 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) [2022-07-20 20:40:33,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-20 20:40:41,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-20 20:40:41,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 20:40:41,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-20 20:40:41,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:40:41,090 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-07-20 20:40:41,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:40:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked. [2022-07-20 20:40:41,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945313802] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:40:41,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:40:41,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-07-20 20:40:41,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685618345] [2022-07-20 20:40:41,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:40:41,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-20 20:40:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:41,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-20 20:40:41,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-20 20:40:41,244 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 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) [2022-07-20 20:40:41,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:41,581 INFO L93 Difference]: Finished difference Result 291 states and 402 transitions. [2022-07-20 20:40:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-20 20:40:41,582 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 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 101 [2022-07-20 20:40:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:41,586 INFO L225 Difference]: With dead ends: 291 [2022-07-20 20:40:41,586 INFO L226 Difference]: Without dead ends: 200 [2022-07-20 20:40:41,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-07-20 20:40:41,591 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:41,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 20:40:41,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-20 20:40:41,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2022-07-20 20:40:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.0452261306532664) internal successors, (208), 199 states have internal predecessors, (208), 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) [2022-07-20 20:40:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 208 transitions. [2022-07-20 20:40:41,615 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 208 transitions. Word has length 101 [2022-07-20 20:40:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:41,615 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 208 transitions. [2022-07-20 20:40:41,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.08) internal successors, (77), 25 states have internal predecessors, (77), 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) [2022-07-20 20:40:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 208 transitions. [2022-07-20 20:40:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-20 20:40:41,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:41,620 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:41,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-20 20:40:41,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:41,844 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:41,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -931812927, now seen corresponding path program 4 times [2022-07-20 20:40:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:41,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999858651] [2022-07-20 20:40:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-07-20 20:40:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:42,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999858651] [2022-07-20 20:40:42,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999858651] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:42,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386071656] [2022-07-20 20:40:42,290 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-20 20:40:42,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:42,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:42,298 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) [2022-07-20 20:40:42,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-20 20:40:42,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-20 20:40:42,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 20:40:42,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1301 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-20 20:40:42,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 20:40:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-07-20 20:40:42,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 20:40:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2024 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2022-07-20 20:40:42,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386071656] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 20:40:42,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-20 20:40:42,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-07-20 20:40:42,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555644091] [2022-07-20 20:40:42,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-20 20:40:42,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-20 20:40:42,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-20 20:40:42,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-20 20:40:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-20 20:40:42,982 INFO L87 Difference]: Start difference. First operand 200 states and 208 transitions. Second operand has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 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) [2022-07-20 20:40:43,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 20:40:43,735 INFO L93 Difference]: Finished difference Result 567 states and 774 transitions. [2022-07-20 20:40:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-20 20:40:43,737 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 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 197 [2022-07-20 20:40:43,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 20:40:43,740 INFO L225 Difference]: With dead ends: 567 [2022-07-20 20:40:43,740 INFO L226 Difference]: Without dead ends: 392 [2022-07-20 20:40:43,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-07-20 20:40:43,745 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 1215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 1647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1215 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-20 20:40:43,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 1647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1215 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-20 20:40:43,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-07-20 20:40:43,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2022-07-20 20:40:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.0230179028132993) internal successors, (400), 391 states have internal predecessors, (400), 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) [2022-07-20 20:40:43,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 400 transitions. [2022-07-20 20:40:43,779 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 400 transitions. Word has length 197 [2022-07-20 20:40:43,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 20:40:43,780 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 400 transitions. [2022-07-20 20:40:43,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 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) [2022-07-20 20:40:43,780 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 400 transitions. [2022-07-20 20:40:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-20 20:40:43,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 20:40:43,784 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 20:40:43,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-20 20:40:43,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:43,999 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 20:40:44,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 20:40:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1753431103, now seen corresponding path program 5 times [2022-07-20 20:40:44,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-20 20:40:44,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887599563] [2022-07-20 20:40:44,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 20:40:44,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-20 20:40:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 20:40:45,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8648 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 7567 trivial. 0 not checked. [2022-07-20 20:40:45,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-20 20:40:45,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887599563] [2022-07-20 20:40:45,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887599563] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-20 20:40:45,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115222073] [2022-07-20 20:40:45,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-20 20:40:45,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-20 20:40:45,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 20:40:45,140 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) [2022-07-20 20:40:45,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process