./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/jm2006.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/jm2006.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0 --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 2e98ae6b3b72bb87faac9dbfcafb29586eefa5010eced7af70cdba4815bccd7f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:53:09,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:53:09,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:53:09,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:53:09,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:53:09,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:53:09,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:53:09,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:53:09,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:53:09,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:53:09,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:53:09,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:53:09,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:53:09,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:53:09,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:53:09,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:53:09,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:53:09,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:53:09,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:53:09,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:53:09,275 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:53:09,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:53:09,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:53:09,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:53:09,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:53:09,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:53:09,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:53:09,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:53:09,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:53:09,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:53:09,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:53:09,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:53:09,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:53:09,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:53:09,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:53:09,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:53:09,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:53:09,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:53:09,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:53:09,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:53:09,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:53:09,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:53:09,339 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:53:09,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:53:09,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:53:09,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:53:09,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:53:09,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:53:09,341 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:53:09,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:53:09,342 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:53:09,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:53:09,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:53:09,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:53:09,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:53:09,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:53:09,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:53:09,343 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:53:09,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:53:09,344 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:53:09,344 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:53:09,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:53:09,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:53:09,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:53:09,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:53:09,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:53:09,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:53:09,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:53:09,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:53:09,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:53:09,346 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:53:09,346 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:53:09,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:53:09,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:53:09,347 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_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e98ae6b3b72bb87faac9dbfcafb29586eefa5010eced7af70cdba4815bccd7f [2021-11-22 14:53:09,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:53:09,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:53:09,682 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:53:09,683 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:53:09,684 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:53:09,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/loop-lit/jm2006.i [2021-11-22 14:53:09,761 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/data/681a84f0c/985a762422ba4ebfba1f6ff667c6050c/FLAG9a630f094 [2021-11-22 14:53:10,327 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:53:10,328 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/sv-benchmarks/c/loop-lit/jm2006.i [2021-11-22 14:53:10,340 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/data/681a84f0c/985a762422ba4ebfba1f6ff667c6050c/FLAG9a630f094 [2021-11-22 14:53:10,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/data/681a84f0c/985a762422ba4ebfba1f6ff667c6050c [2021-11-22 14:53:10,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:53:10,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:53:10,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:53:10,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:53:10,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:53:10,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:10,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147b81fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10, skipping insertion in model container [2021-11-22 14:53:10,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:10,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:53:10,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:53:10,916 WARN L230 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_b5166ac9-3948-45d6-b006-4f25506b158e/sv-benchmarks/c/loop-lit/jm2006.i[895,908] [2021-11-22 14:53:10,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:53:10,934 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:53:10,947 WARN L230 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_b5166ac9-3948-45d6-b006-4f25506b158e/sv-benchmarks/c/loop-lit/jm2006.i[895,908] [2021-11-22 14:53:10,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:53:10,964 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:53:10,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10 WrapperNode [2021-11-22 14:53:10,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:53:10,966 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:53:10,967 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:53:10,967 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:53:10,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:10,985 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:11,005 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2021-11-22 14:53:11,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:53:11,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:53:11,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:53:11,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:53:11,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:11,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:11,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:11,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:11,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:11,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:11,038 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:11,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:53:11,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:53:11,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:53:11,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:53:11,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (1/1) ... [2021-11-22 14:53:11,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:53:11,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:53:11,094 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:53:11,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:53:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:53:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:53:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:53:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:53:11,212 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:53:11,214 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:53:11,381 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:53:11,387 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:53:11,387 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:53:11,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:53:11 BoogieIcfgContainer [2021-11-22 14:53:11,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:53:11,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:53:11,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:53:11,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:53:11,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:53:10" (1/3) ... [2021-11-22 14:53:11,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fead261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:53:11, skipping insertion in model container [2021-11-22 14:53:11,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:53:10" (2/3) ... [2021-11-22 14:53:11,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fead261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:53:11, skipping insertion in model container [2021-11-22 14:53:11,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:53:11" (3/3) ... [2021-11-22 14:53:11,400 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2021-11-22 14:53:11,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:53:11,406 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 14:53:11,472 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:53:11,484 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 [2021-11-22 14:53:11,484 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 14:53:11,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 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) [2021-11-22 14:53:11,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 14:53:11,519 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:11,520 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:11,521 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:11,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1807091466, now seen corresponding path program 1 times [2021-11-22 14:53:11,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:11,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255189132] [2021-11-22 14:53:11,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:11,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:11,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:11,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:11,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:11,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255189132] [2021-11-22 14:53:11,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255189132] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:11,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:11,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:53:11,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161366521] [2021-11-22 14:53:11,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:11,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:53:11,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:53:11,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:53:11,790 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-22 14:53:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:11,819 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-11-22 14:53:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:53:11,821 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-22 14:53:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:11,828 INFO L225 Difference]: With dead ends: 22 [2021-11-22 14:53:11,828 INFO L226 Difference]: Without dead ends: 8 [2021-11-22 14:53:11,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:53:11,835 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:53:11,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-22 14:53:11,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-22 14:53:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2021-11-22 14:53:11,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-22 14:53:11,868 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-11-22 14:53:11,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:11,869 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-22 14:53:11,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-22 14:53:11,869 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-22 14:53:11,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 14:53:11,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:11,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:11,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:53:11,871 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:11,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:11,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1806972302, now seen corresponding path program 1 times [2021-11-22 14:53:11,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:11,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648832512] [2021-11-22 14:53:11,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:11,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:12,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:12,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648832512] [2021-11-22 14:53:12,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648832512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:53:12,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:53:12,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:53:12,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622243107] [2021-11-22 14:53:12,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:53:12,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:53:12,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:12,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:53:12,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:53:12,078 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-11-22 14:53:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:12,204 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-11-22 14:53:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:53:12,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2021-11-22 14:53:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:12,206 INFO L225 Difference]: With dead ends: 13 [2021-11-22 14:53:12,206 INFO L226 Difference]: Without dead ends: 9 [2021-11-22 14:53:12,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:53:12,212 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:53:12,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 16 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:12,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-22 14:53:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-22 14:53:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-11-22 14:53:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-22 14:53:12,217 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-11-22 14:53:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:12,218 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-22 14:53:12,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-11-22 14:53:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-22 14:53:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-22 14:53:12,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:53:12,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:53:12,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:53:12,219 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:53:12,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:53:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash 183172310, now seen corresponding path program 1 times [2021-11-22 14:53:12,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:53:12,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057457098] [2021-11-22 14:53:12,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:12,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:53:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:12,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:12,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:53:12,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057457098] [2021-11-22 14:53:12,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057457098] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 14:53:12,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825870129] [2021-11-22 14:53:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:53:12,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:53:12,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:53:12,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:53:12,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:53:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:53:12,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-22 14:53:12,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:53:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:12,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:53:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:53:12,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825870129] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 14:53:12,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 14:53:12,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-11-22 14:53:12,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672958353] [2021-11-22 14:53:12,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 14:53:12,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 14:53:12,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:53:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 14:53:12,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-22 14:53:12,813 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-11-22 14:53:12,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:53:12,930 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-11-22 14:53:12,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 14:53:12,931 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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 [2021-11-22 14:53:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:53:12,931 INFO L225 Difference]: With dead ends: 12 [2021-11-22 14:53:12,931 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 14:53:12,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-11-22 14:53:12,937 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:53:12,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 13 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:53:12,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 14:53:12,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 14:53:12,940 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) [2021-11-22 14:53:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 14:53:12,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-11-22 14:53:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:53:12,941 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 14:53:12,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-11-22 14:53:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 14:53:12,942 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 14:53:12,945 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-22 14:53:12,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:53:13,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:53:13,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-22 14:53:13,199 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-22 14:53:13,199 INFO L854 garLoopResultBuilder]: At program point L31-2(lines 31 34) the Hoare annotation is: (let ((.cse1 (+ |ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (+ |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-11-22 14:53:13,200 INFO L858 garLoopResultBuilder]: For program point L31-3(lines 24 39) no Hoare annotation was computed. [2021-11-22 14:53:13,200 INFO L858 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-11-22 14:53:13,200 INFO L861 garLoopResultBuilder]: At program point L38(lines 24 39) the Hoare annotation is: true [2021-11-22 14:53:13,200 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-22 14:53:13,200 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-22 14:53:13,200 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-22 14:53:13,201 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-11-22 14:53:13,201 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-11-22 14:53:13,201 INFO L858 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-11-22 14:53:13,201 INFO L861 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-11-22 14:53:13,201 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 35 37) no Hoare annotation was computed. [2021-11-22 14:53:13,205 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-22 14:53:13,207 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 14:53:13,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:53:13 BoogieIcfgContainer [2021-11-22 14:53:13,221 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 14:53:13,222 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 14:53:13,222 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 14:53:13,223 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 14:53:13,223 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:53:11" (3/4) ... [2021-11-22 14:53:13,226 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 14:53:13,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-11-22 14:53:13,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-22 14:53:13,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 14:53:13,238 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 14:53:13,270 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 14:53:13,271 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 14:53:13,271 INFO L158 Benchmark]: Toolchain (without parser) took 2594.18ms. Allocated memory was 115.3MB in the beginning and 140.5MB in the end (delta: 25.2MB). Free memory was 73.7MB in the beginning and 92.5MB in the end (delta: -18.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-11-22 14:53:13,272 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 115.3MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:53:13,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.52ms. Allocated memory is still 115.3MB. Free memory was 73.5MB in the beginning and 90.1MB in the end (delta: -16.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-22 14:53:13,273 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.94ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 88.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:53:13,273 INFO L158 Benchmark]: Boogie Preprocessor took 39.75ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 87.7MB in the end (delta: 719.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:53:13,274 INFO L158 Benchmark]: RCFGBuilder took 343.99ms. Allocated memory is still 115.3MB. Free memory was 87.7MB in the beginning and 78.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-22 14:53:13,274 INFO L158 Benchmark]: TraceAbstraction took 1829.57ms. Allocated memory was 115.3MB in the beginning and 140.5MB in the end (delta: 25.2MB). Free memory was 78.1MB in the beginning and 95.7MB in the end (delta: -17.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-22 14:53:13,275 INFO L158 Benchmark]: Witness Printer took 48.62ms. Allocated memory is still 140.5MB. Free memory was 95.7MB in the beginning and 92.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:53:13,277 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 115.3MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.52ms. Allocated memory is still 115.3MB. Free memory was 73.5MB in the beginning and 90.1MB in the end (delta: -16.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.94ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 88.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.75ms. Allocated memory is still 115.3MB. Free memory was 88.5MB in the beginning and 87.7MB in the end (delta: 719.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 343.99ms. Allocated memory is still 115.3MB. Free memory was 87.7MB in the beginning and 78.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1829.57ms. Allocated memory was 115.3MB in the beginning and 140.5MB in the end (delta: 25.2MB). Free memory was 78.1MB in the beginning and 95.7MB in the end (delta: -17.6MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Witness Printer took 48.62ms. Allocated memory is still 140.5MB. Free memory was 95.7MB in the beginning and 92.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 23 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 17 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 198 SizeOfPredicates, 7 NumberOfNonLiveVariables, 47 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: i + y <= j + x && j + x <= i + y RESULT: Ultimate proved your program to be correct! [2021-11-22 14:53:13,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5166ac9-3948-45d6-b006-4f25506b158e/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE