./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX --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 0ad27fb086e75bf8f5b08286d8e766d07abfe44ff39234568924cf55ade7a6d5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:38:22,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:38:22,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:38:22,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:38:22,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:38:22,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:38:22,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:38:22,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:38:22,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:38:22,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:38:22,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:38:22,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:38:22,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:38:22,318 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:38:22,320 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:38:22,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:38:22,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:38:22,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:38:22,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:38:22,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:38:22,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:38:22,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:38:22,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:38:22,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:38:22,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:38:22,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:38:22,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:38:22,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:38:22,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:38:22,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:38:22,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:38:22,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:38:22,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:38:22,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:38:22,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:38:22,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:38:22,350 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:38:22,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:38:22,351 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:38:22,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:38:22,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:38:22,354 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:38:22,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:38:22,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:38:22,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:38:22,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:38:22,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:38:22,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:38:22,384 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:38:22,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:38:22,385 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:38:22,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:38:22,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:38:22,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:38:22,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:38:22,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:38:22,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:38:22,387 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:38:22,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:38:22,388 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:38:22,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:38:22,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:38:22,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:38:22,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:38:22,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:38:22,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:38:22,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:38:22,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:38:22,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:38:22,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:38:22,390 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:38:22,390 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:38:22,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:38:22,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:38:22,391 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ad27fb086e75bf8f5b08286d8e766d07abfe44ff39234568924cf55ade7a6d5 [2021-11-09 10:38:22,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:38:22,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:38:22,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:38:22,652 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:38:22,652 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:38:22,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2021-11-09 10:38:22,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/data/b62e0177d/8729ef408dc149a591444f86588f93f7/FLAGd8fbe2d9c [2021-11-09 10:38:23,141 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:38:23,142 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i [2021-11-09 10:38:23,148 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/data/b62e0177d/8729ef408dc149a591444f86588f93f7/FLAGd8fbe2d9c [2021-11-09 10:38:23,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/data/b62e0177d/8729ef408dc149a591444f86588f93f7 [2021-11-09 10:38:23,536 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:38:23,537 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:38:23,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:38:23,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:38:23,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:38:23,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c23af6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23, skipping insertion in model container [2021-11-09 10:38:23,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:38:23,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:38:23,731 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i[893,906] [2021-11-09 10:38:23,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:38:23,795 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:38:23,819 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i[893,906] [2021-11-09 10:38:23,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:38:23,865 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:38:23,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23 WrapperNode [2021-11-09 10:38:23,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:38:23,868 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:38:23,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:38:23,869 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:38:23,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,891 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,926 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:38:23,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:38:23,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:38:23,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:38:23,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:38:23,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:38:23,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:38:23,972 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:38:23,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (1/1) ... [2021-11-09 10:38:23,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:38:24,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:38:24,018 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:38:24,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:38:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:38:24,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:38:24,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:38:24,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:38:24,333 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:38:24,333 INFO L299 CfgBuilder]: Removed 38 assume(true) statements. [2021-11-09 10:38:24,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:38:24 BoogieIcfgContainer [2021-11-09 10:38:24,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:38:24,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:38:24,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:38:24,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:38:24,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:38:23" (1/3) ... [2021-11-09 10:38:24,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e80d858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:38:24, skipping insertion in model container [2021-11-09 10:38:24,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:38:23" (2/3) ... [2021-11-09 10:38:24,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e80d858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:38:24, skipping insertion in model container [2021-11-09 10:38:24,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:38:24" (3/3) ... [2021-11-09 10:38:24,343 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i [2021-11-09 10:38:24,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:38:24,349 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-09 10:38:24,392 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:38:24,398 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 [2021-11-09 10:38:24,399 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-09 10:38:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 75 states have internal predecessors, (98), 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) [2021-11-09 10:38:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-09 10:38:24,420 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:38:24,421 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:38:24,421 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 10:38:24,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:38:24,427 INFO L85 PathProgramCache]: Analyzing trace with hash 182520880, now seen corresponding path program 1 times [2021-11-09 10:38:24,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:38:24,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109435588] [2021-11-09 10:38:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:38:24,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:38:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:38:24,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:38:24,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:38:24,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109435588] [2021-11-09 10:38:24,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109435588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:38:24,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:38:24,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:38:24,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851449516] [2021-11-09 10:38:24,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:38:24,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:38:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:38:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:38:24,740 INFO L87 Difference]: Start difference. First operand has 76 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 75 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-09 10:38:24,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:38:24,871 INFO L93 Difference]: Finished difference Result 155 states and 202 transitions. [2021-11-09 10:38:24,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:38:24,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-09 10:38:24,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:38:24,881 INFO L225 Difference]: With dead ends: 155 [2021-11-09 10:38:24,882 INFO L226 Difference]: Without dead ends: 74 [2021-11-09 10:38:24,884 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:38:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-09 10:38:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2021-11-09 10:38:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.3272727272727274) internal successors, (73), 69 states have internal predecessors, (73), 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) [2021-11-09 10:38:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2021-11-09 10:38:24,921 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 8 [2021-11-09 10:38:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:38:24,922 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2021-11-09 10:38:24,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-11-09 10:38:24,922 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2021-11-09 10:38:24,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 10:38:24,923 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:38:24,923 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:38:24,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:38:24,924 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 10:38:24,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:38:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1367458032, now seen corresponding path program 1 times [2021-11-09 10:38:24,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:38:24,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654184530] [2021-11-09 10:38:24,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:38:24,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:38:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:38:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:38:25,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:38:25,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654184530] [2021-11-09 10:38:25,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654184530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:38:25,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:38:25,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:38:25,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247194523] [2021-11-09 10:38:25,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:38:25,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:38:25,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:38:25,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:38:25,009 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-09 10:38:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:38:25,179 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2021-11-09 10:38:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:38:25,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2021-11-09 10:38:25,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:38:25,182 INFO L225 Difference]: With dead ends: 77 [2021-11-09 10:38:25,182 INFO L226 Difference]: Without dead ends: 73 [2021-11-09 10:38:25,183 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:38:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-09 10:38:25,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2021-11-09 10:38:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 53 states have (on average 1.3018867924528301) internal successors, (69), 65 states have internal predecessors, (69), 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) [2021-11-09 10:38:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-11-09 10:38:25,199 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 9 [2021-11-09 10:38:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:38:25,201 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-11-09 10:38:25,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-09 10:38:25,201 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-11-09 10:38:25,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-09 10:38:25,204 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:38:25,204 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:38:25,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:38:25,205 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 10:38:25,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:38:25,209 INFO L85 PathProgramCache]: Analyzing trace with hash -690937453, now seen corresponding path program 1 times [2021-11-09 10:38:25,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:38:25,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259671267] [2021-11-09 10:38:25,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:38:25,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:38:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:38:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:38:25,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:38:25,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259671267] [2021-11-09 10:38:25,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259671267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:38:25,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:38:25,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:38:25,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575873754] [2021-11-09 10:38:25,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:38:25,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:38:25,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:38:25,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:38:25,330 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:38:25,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:38:25,427 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2021-11-09 10:38:25,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:38:25,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-09 10:38:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:38:25,432 INFO L225 Difference]: With dead ends: 70 [2021-11-09 10:38:25,432 INFO L226 Difference]: Without dead ends: 62 [2021-11-09 10:38:25,432 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:38:25,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-09 10:38:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-11-09 10:38:25,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 57 states have internal predecessors, (61), 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) [2021-11-09 10:38:25,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2021-11-09 10:38:25,452 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 10 [2021-11-09 10:38:25,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:38:25,453 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2021-11-09 10:38:25,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:38:25,453 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2021-11-09 10:38:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 10:38:25,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:38:25,454 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:38:25,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:38:25,454 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 10:38:25,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:38:25,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1359739798, now seen corresponding path program 1 times [2021-11-09 10:38:25,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:38:25,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201978555] [2021-11-09 10:38:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:38:25,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:38:25,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:38:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:38:25,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:38:25,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201978555] [2021-11-09 10:38:25,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201978555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:38:25,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:38:25,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:38:25,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318072783] [2021-11-09 10:38:25,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:38:25,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:38:25,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:38:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:38:25,545 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:38:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:38:25,691 INFO L93 Difference]: Finished difference Result 62 states and 67 transitions. [2021-11-09 10:38:25,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:38:25,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-09 10:38:25,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:38:25,695 INFO L225 Difference]: With dead ends: 62 [2021-11-09 10:38:25,696 INFO L226 Difference]: Without dead ends: 58 [2021-11-09 10:38:25,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:38:25,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-09 10:38:25,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2021-11-09 10:38:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 53 states have internal predecessors, (57), 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) [2021-11-09 10:38:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-11-09 10:38:25,711 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 13 [2021-11-09 10:38:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:38:25,712 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-11-09 10:38:25,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:38:25,712 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-11-09 10:38:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 10:38:25,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:38:25,714 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:38:25,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:38:25,715 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 10:38:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:38:25,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1040049113, now seen corresponding path program 1 times [2021-11-09 10:38:25,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:38:25,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634313588] [2021-11-09 10:38:25,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:38:25,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:38:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:38:25,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:38:25,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:38:25,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634313588] [2021-11-09 10:38:25,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634313588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:38:25,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:38:25,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:38:25,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641459227] [2021-11-09 10:38:25,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:38:25,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:38:25,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:38:25,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:38:25,795 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:38:25,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:38:25,871 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-11-09 10:38:25,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:38:25,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-09 10:38:25,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:38:25,873 INFO L225 Difference]: With dead ends: 59 [2021-11-09 10:38:25,873 INFO L226 Difference]: Without dead ends: 51 [2021-11-09 10:38:25,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:38:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-09 10:38:25,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2021-11-09 10:38:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 45 states have internal predecessors, (49), 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) [2021-11-09 10:38:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 49 transitions. [2021-11-09 10:38:25,881 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 49 transitions. Word has length 15 [2021-11-09 10:38:25,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:38:25,882 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 49 transitions. [2021-11-09 10:38:25,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:38:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 49 transitions. [2021-11-09 10:38:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-09 10:38:25,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:38:25,883 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:38:25,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:38:25,884 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 10:38:25,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:38:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash -136168689, now seen corresponding path program 1 times [2021-11-09 10:38:25,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:38:25,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333625382] [2021-11-09 10:38:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:38:25,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:38:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:38:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:38:25,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:38:25,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333625382] [2021-11-09 10:38:25,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333625382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:38:25,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:38:25,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:38:25,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697505513] [2021-11-09 10:38:25,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:38:25,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:38:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:38:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:38:25,938 INFO L87 Difference]: Start difference. First operand 46 states and 49 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2021-11-09 10:38:26,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:38:26,024 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2021-11-09 10:38:26,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:38:26,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 [2021-11-09 10:38:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:38:26,036 INFO L225 Difference]: With dead ends: 59 [2021-11-09 10:38:26,036 INFO L226 Difference]: Without dead ends: 57 [2021-11-09 10:38:26,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:38:26,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-09 10:38:26,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2021-11-09 10:38:26,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.119047619047619) internal successors, (47), 43 states have internal predecessors, (47), 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) [2021-11-09 10:38:26,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2021-11-09 10:38:26,048 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 21 [2021-11-09 10:38:26,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:38:26,048 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2021-11-09 10:38:26,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2021-11-09 10:38:26,049 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2021-11-09 10:38:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-09 10:38:26,050 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:38:26,050 INFO L513 BasicCegarLoop]: 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] [2021-11-09 10:38:26,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 10:38:26,050 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 10:38:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:38:26,053 INFO L85 PathProgramCache]: Analyzing trace with hash -2144113483, now seen corresponding path program 1 times [2021-11-09 10:38:26,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:38:26,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556631813] [2021-11-09 10:38:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:38:26,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:38:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:38:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:38:26,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:38:26,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556631813] [2021-11-09 10:38:26,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556631813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:38:26,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:38:26,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:38:26,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770198081] [2021-11-09 10:38:26,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:38:26,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:38:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:38:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:38:26,170 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:38:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:38:26,287 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2021-11-09 10:38:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:38:26,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-09 10:38:26,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:38:26,288 INFO L225 Difference]: With dead ends: 50 [2021-11-09 10:38:26,288 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 10:38:26,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-09 10:38:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 10:38:26,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 10:38:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:38:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 10:38:26,290 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-11-09 10:38:26,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:38:26,290 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 10:38:26,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:38:26,291 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 10:38:26,291 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 10:38:26,293 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,294 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,294 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,294 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,295 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,295 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,295 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,295 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,296 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,296 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,296 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,296 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,296 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,297 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,297 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,297 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:38:26,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:38:26,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 10:38:26,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-09 10:38:26,702 INFO L853 garLoopResultBuilder]: At program point L18-17(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,702 INFO L853 garLoopResultBuilder]: At program point L35-2(lines 35 64) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= 0 ULTIMATE.start_main_~j~0) (or (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) [2021-11-09 10:38:26,702 INFO L857 garLoopResultBuilder]: For program point L18-18(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,703 INFO L853 garLoopResultBuilder]: At program point L18-20(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,703 INFO L857 garLoopResultBuilder]: For program point L18-21(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,703 INFO L853 garLoopResultBuilder]: At program point L18-23(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,703 INFO L857 garLoopResultBuilder]: For program point L18-24(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,703 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,704 INFO L853 garLoopResultBuilder]: At program point L18-26(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,704 INFO L857 garLoopResultBuilder]: For program point L18-27(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,704 INFO L853 garLoopResultBuilder]: At program point L18-29(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 4) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,704 INFO L857 garLoopResultBuilder]: For program point L18-30(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,704 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,705 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,705 INFO L853 garLoopResultBuilder]: At program point L18-32(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,705 INFO L857 garLoopResultBuilder]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,705 INFO L857 garLoopResultBuilder]: For program point L18-33(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,705 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,705 INFO L857 garLoopResultBuilder]: For program point L19-4(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,705 INFO L853 garLoopResultBuilder]: At program point L18-35(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,706 INFO L857 garLoopResultBuilder]: For program point L19-5(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,706 INFO L857 garLoopResultBuilder]: For program point L18-36(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,706 INFO L857 garLoopResultBuilder]: For program point L19-6(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,706 INFO L857 garLoopResultBuilder]: For program point L19-7(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,706 INFO L853 garLoopResultBuilder]: At program point L18-38(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,706 INFO L857 garLoopResultBuilder]: For program point L19-8(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,706 INFO L857 garLoopResultBuilder]: For program point L18-39(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,707 INFO L857 garLoopResultBuilder]: For program point L19-9(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,712 INFO L857 garLoopResultBuilder]: For program point L19-10(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,712 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,715 INFO L853 garLoopResultBuilder]: At program point L18-41(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,716 INFO L857 garLoopResultBuilder]: For program point L19-11(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,717 INFO L857 garLoopResultBuilder]: For program point L18-42(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,717 INFO L857 garLoopResultBuilder]: For program point L19-12(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,717 INFO L857 garLoopResultBuilder]: For program point L19-13(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,718 INFO L853 garLoopResultBuilder]: At program point L18-44(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,718 INFO L857 garLoopResultBuilder]: For program point L19-14(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,718 INFO L857 garLoopResultBuilder]: For program point L18-45(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,718 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 63) no Hoare annotation was computed. [2021-11-09 10:38:26,721 INFO L857 garLoopResultBuilder]: For program point L19-15(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,721 INFO L853 garLoopResultBuilder]: At program point L18-47(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,721 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 10:38:26,721 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,722 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,722 INFO L857 garLoopResultBuilder]: For program point L39(line 39) no Hoare annotation was computed. [2021-11-09 10:38:26,722 INFO L853 garLoopResultBuilder]: At program point L56(lines 36 63) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (< ULTIMATE.start_main_~i~0 ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,722 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,722 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 10:38:26,722 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,723 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,723 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,723 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,723 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,723 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 10:38:26,724 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,724 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,724 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,724 INFO L857 garLoopResultBuilder]: For program point L31(line 31) no Hoare annotation was computed. [2021-11-09 10:38:26,724 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,725 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 10:38:26,725 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,725 INFO L860 garLoopResultBuilder]: At program point L66(lines 24 67) the Hoare annotation is: true [2021-11-09 10:38:26,725 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 65) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= 0 ULTIMATE.start_main_~i~0)) [2021-11-09 10:38:26,726 INFO L857 garLoopResultBuilder]: For program point L34-3(lines 34 65) no Hoare annotation was computed. [2021-11-09 10:38:26,726 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-09 10:38:26,726 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,726 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,726 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,727 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,727 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,727 INFO L853 garLoopResultBuilder]: At program point L18-8(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,728 INFO L857 garLoopResultBuilder]: For program point L18-9(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,728 INFO L853 garLoopResultBuilder]: At program point L18-11(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,728 INFO L857 garLoopResultBuilder]: For program point L18-12(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,728 INFO L853 garLoopResultBuilder]: At program point L18-14(lines 17 22) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~limit~0 4) ULTIMATE.start_main_~bufsize~0) (<= (+ ULTIMATE.start_main_~i~0 2) ULTIMATE.start_main_~len~0) (<= 0 ULTIMATE.start_main_~i~0) (<= (+ ULTIMATE.start_main_~j~0 5) ULTIMATE.start_main_~bufsize~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 0 ULTIMATE.start_main_~j~0)) [2021-11-09 10:38:26,729 INFO L857 garLoopResultBuilder]: For program point L18-15(lines 18 20) no Hoare annotation was computed. [2021-11-09 10:38:26,732 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:38:26,734 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:38:26,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:38:26 BoogieIcfgContainer [2021-11-09 10:38:26,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:38:26,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:38:26,774 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:38:26,774 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:38:26,774 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:38:24" (3/4) ... [2021-11-09 10:38:26,777 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 10:38:26,790 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-09 10:38:26,790 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-09 10:38:26,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:38:26,791 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:38:26,870 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 10:38:26,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:38:26,871 INFO L168 Benchmark]: Toolchain (without parser) took 3333.61 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 77.1 MB in the beginning and 42.7 MB in the end (delta: 34.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:26,872 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:38:26,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.22 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 81.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:26,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.95 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 79.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:26,873 INFO L168 Benchmark]: Boogie Preprocessor took 44.05 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:26,874 INFO L168 Benchmark]: RCFGBuilder took 363.86 ms. Allocated memory is still 107.0 MB. Free memory was 78.4 MB in the beginning and 65.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:26,874 INFO L168 Benchmark]: TraceAbstraction took 2436.15 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 65.0 MB in the beginning and 46.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:26,874 INFO L168 Benchmark]: Witness Printer took 96.19 ms. Allocated memory is still 130.0 MB. Free memory was 46.9 MB in the beginning and 42.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 10:38:26,876 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 107.0 MB. Free memory is still 60.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 316.22 ms. Allocated memory is still 107.0 MB. Free memory was 77.1 MB in the beginning and 81.6 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.95 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 79.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.05 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 78.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 363.86 ms. Allocated memory is still 107.0 MB. Free memory was 78.4 MB in the beginning and 65.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2436.15 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 65.0 MB in the beginning and 46.9 MB in the end (delta: 18.1 MB). Peak memory consumption was 42.8 MB. Max. memory is 16.1 GB. * Witness Printer took 96.19 ms. Allocated memory is still 130.0 MB. Free memory was 46.9 MB in the beginning and 42.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 352 SDtfs, 318 SDslu, 163 SDs, 0 SdLazy, 329 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, InterpolantAutomatonStates: 35, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 37 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 20 PreInvPairs, 46 NumberOfFragments, 418 HoareAnnotationTreeSize, 20 FomulaSimplifications, 3642 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 101 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 313 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && 0 <= i) && j + 5 <= bufsize) && i < len) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && i + 2 <= len) && 0 <= i) && j + 5 <= bufsize) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((limit + 4 <= bufsize && 0 <= i) && j + 5 <= bufsize) && i < len) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && 0 <= i) && j + 5 <= bufsize) && i < len) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((limit + 4 <= bufsize && 0 <= i) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && 0 <= i) && j + 5 <= bufsize) && i < len) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && i + 2 <= len) && 0 <= i) && j + 5 <= bufsize) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && i + 2 <= len) && 0 <= i) && j + 5 <= bufsize) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((limit + 4 <= bufsize && 0 <= i) && j + 4 <= bufsize) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: limit + 4 <= bufsize && 0 <= i - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((limit + 4 <= bufsize && 0 <= i) && j + 4 <= bufsize) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((limit + 4 <= bufsize && 0 <= i) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && 0 <= i) && j + 5 <= bufsize) && i < len) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && i + 2 <= len) && 0 <= i) && j + 5 <= bufsize) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && i + 2 <= len) && 0 <= i) && j + 5 <= bufsize) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((limit + 4 <= bufsize && i + 2 <= len) && 0 <= i) && j + 5 <= bufsize) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((limit + 4 <= bufsize && 0 <= i) && j + 4 <= bufsize) && !(0 == cond)) && 0 <= j - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((limit + 4 <= bufsize && 0 <= i) && 0 <= j) && (i < len || !(0 == cond)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((limit + 4 <= bufsize && 0 <= i) && j + 4 <= bufsize) && !(0 == cond)) && 0 <= j RESULT: Ultimate proved your program to be correct! [2021-11-09 10:38:26,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b428147-8a49-4039-bbb6-367479f8a16f/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE