./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3 --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 66fc40811a6b64eeba1619d2b2b45575ff6b207a ................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 20:19:29,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 20:19:29,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 20:19:29,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 20:19:29,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 20:19:29,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 20:19:29,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 20:19:30,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 20:19:30,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 20:19:30,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 20:19:30,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 20:19:30,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 20:19:30,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 20:19:30,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 20:19:30,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 20:19:30,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 20:19:30,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 20:19:30,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 20:19:30,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 20:19:30,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 20:19:30,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 20:19:30,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 20:19:30,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 20:19:30,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 20:19:30,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 20:19:30,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 20:19:30,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 20:19:30,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 20:19:30,075 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 20:19:30,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 20:19:30,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 20:19:30,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 20:19:30,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 20:19:30,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 20:19:30,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 20:19:30,085 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 20:19:30,086 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 20:19:30,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 20:19:30,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 20:19:30,088 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 20:19:30,089 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 20:19:30,090 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 20:19:30,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 20:19:30,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 20:19:30,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 20:19:30,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 20:19:30,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 20:19:30,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 20:19:30,155 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 20:19:30,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 20:19:30,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 20:19:30,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 20:19:30,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 20:19:30,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 20:19:30,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 20:19:30,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 20:19:30,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 20:19:30,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 20:19:30,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 20:19:30,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 20:19:30,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 20:19:30,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 20:19:30,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 20:19:30,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 20:19:30,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:19:30,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 20:19:30,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 20:19:30,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 20:19:30,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 20:19:30,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 20:19:30,163 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 20:19:30,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 20:19:30,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 20:19:30,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 20:19:30,167 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_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fc40811a6b64eeba1619d2b2b45575ff6b207a [2021-10-15 20:19:30,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 20:19:30,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 20:19:30,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 20:19:30,655 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 20:19:30,656 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 20:19:30,657 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2021-10-15 20:19:30,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/data/452236dd6/c819006015d84d8bb38e5de452146203/FLAGc2c773fec [2021-10-15 20:19:31,529 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 20:19:31,529 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/sv-benchmarks/c/loop-crafted/simple_vardep_1.c [2021-10-15 20:19:31,546 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/data/452236dd6/c819006015d84d8bb38e5de452146203/FLAGc2c773fec [2021-10-15 20:19:31,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/data/452236dd6/c819006015d84d8bb38e5de452146203 [2021-10-15 20:19:31,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 20:19:31,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 20:19:31,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 20:19:31,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 20:19:31,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 20:19:31,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:19:31" (1/1) ... [2021-10-15 20:19:31,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ad5940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:31, skipping insertion in model container [2021-10-15 20:19:31,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 08:19:31" (1/1) ... [2021-10-15 20:19:31,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 20:19:31,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 20:19:32,194 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_e4d0dbc3-fe51-4732-8446-1f780fdc33db/sv-benchmarks/c/loop-crafted/simple_vardep_1.c[584,597] [2021-10-15 20:19:32,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:19:32,236 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 20:19:32,256 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_e4d0dbc3-fe51-4732-8446-1f780fdc33db/sv-benchmarks/c/loop-crafted/simple_vardep_1.c[584,597] [2021-10-15 20:19:32,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 20:19:32,282 INFO L208 MainTranslator]: Completed translation [2021-10-15 20:19:32,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32 WrapperNode [2021-10-15 20:19:32,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 20:19:32,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 20:19:32,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 20:19:32,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 20:19:32,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,313 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 20:19:32,348 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 20:19:32,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 20:19:32,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 20:19:32,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 20:19:32,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 20:19:32,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 20:19:32,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 20:19:32,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (1/1) ... [2021-10-15 20:19:32,409 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 20:19:32,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:19:32,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 20:19:32,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 20:19:32,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 20:19:32,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 20:19:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 20:19:32,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 20:19:32,857 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 20:19:32,857 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-15 20:19:32,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:19:32 BoogieIcfgContainer [2021-10-15 20:19:32,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 20:19:32,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 20:19:32,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 20:19:32,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 20:19:32,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 08:19:31" (1/3) ... [2021-10-15 20:19:32,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ce05a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:19:32, skipping insertion in model container [2021-10-15 20:19:32,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 08:19:32" (2/3) ... [2021-10-15 20:19:32,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32ce05a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 08:19:32, skipping insertion in model container [2021-10-15 20:19:32,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:19:32" (3/3) ... [2021-10-15 20:19:32,880 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2021-10-15 20:19:32,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 20:19:32,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 20:19:32,974 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 20:19:32,990 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, mConcurrency=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 [2021-10-15 20:19:32,990 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 20:19:33,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 11 transitions, 22 flow [2021-10-15 20:19:33,033 INFO L129 PetriNetUnfolder]: 3/11 cut-off events. [2021-10-15 20:19:33,034 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:19:33,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12 conditions, 11 events. 3/11 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:19:33,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 11 transitions, 22 flow [2021-10-15 20:19:33,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 7 transitions, 14 flow [2021-10-15 20:19:33,052 INFO L129 PetriNetUnfolder]: 2/6 cut-off events. [2021-10-15 20:19:33,053 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:19:33,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:19:33,054 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-10-15 20:19:33,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:19:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:19:33,069 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2021-10-15 20:19:33,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:19:33,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828529962] [2021-10-15 20:19:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:19:33,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:19:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:19:33,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:19:33,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:19:33,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828529962] [2021-10-15 20:19:33,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828529962] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 20:19:33,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 20:19:33,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 20:19:33,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103040507] [2021-10-15 20:19:33,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 20:19:33,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:19:33,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 20:19:33,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 20:19:33,632 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 11 [2021-10-15 20:19:33,636 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6 places, 7 transitions, 14 flow. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:19:33,636 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:19:33,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 11 [2021-10-15 20:19:33,638 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:19:33,672 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-10-15 20:19:33,672 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 20:19:33,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 8 events. 1/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:19:33,674 INFO L132 encePairwiseOnDemand]: 6/11 looper letters, 2 selfloop transitions, 4 changer transitions 0/8 dead transitions. [2021-10-15 20:19:33,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 9 places, 8 transitions, 28 flow [2021-10-15 20:19:33,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 20:19:33,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 20:19:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2021-10-15 20:19:33,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2021-10-15 20:19:33,691 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 24 transitions. [2021-10-15 20:19:33,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 24 transitions. [2021-10-15 20:19:33,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:19:33,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 24 transitions. [2021-10-15 20:19:33,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:19:33,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2021-10-15 20:19:33,702 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2021-10-15 20:19:33,705 INFO L186 Difference]: Start difference. First operand has 6 places, 7 transitions, 14 flow. Second operand 4 states and 24 transitions. [2021-10-15 20:19:33,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 9 places, 8 transitions, 28 flow [2021-10-15 20:19:33,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 8 transitions, 28 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 20:19:33,711 INFO L242 Difference]: Finished difference. Result has 11 places, 8 transitions, 34 flow [2021-10-15 20:19:33,713 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=11, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=34, PETRI_PLACES=11, PETRI_TRANSITIONS=8} [2021-10-15 20:19:33,714 INFO L334 CegarLoopForPetriNet]: 6 programPoint places, 5 predicate places. [2021-10-15 20:19:33,715 INFO L470 AbstractCegarLoop]: Abstraction has has 11 places, 8 transitions, 34 flow [2021-10-15 20:19:33,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 20:19:33,715 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 20:19:33,716 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-15 20:19:33,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 20:19:33,716 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 20:19:33,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 20:19:33,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1810804418, now seen corresponding path program 1 times [2021-10-15 20:19:33,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 20:19:33,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047067664] [2021-10-15 20:19:33,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:19:33,718 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 20:19:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:19:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:19:33,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 20:19:33,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047067664] [2021-10-15 20:19:33,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047067664] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:19:33,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544925171] [2021-10-15 20:19:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 20:19:33,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:19:33,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 20:19:33,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 20:19:33,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 20:19:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 20:19:34,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-15 20:19:34,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 20:19:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 20:19:34,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544925171] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 20:19:34,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 20:19:34,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2021-10-15 20:19:34,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156932600] [2021-10-15 20:19:34,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 20:19:34,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 20:19:34,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 20:19:34,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-10-15 20:19:34,532 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 11 [2021-10-15 20:19:34,533 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 34 flow. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2021-10-15 20:19:34,533 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 20:19:34,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 11 [2021-10-15 20:19:34,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 20:19:34,638 INFO L129 PetriNetUnfolder]: 1/7 cut-off events. [2021-10-15 20:19:34,638 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 20:19:34,639 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 7 events. 1/7 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/8 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2021-10-15 20:19:34,639 INFO L132 encePairwiseOnDemand]: 8/11 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2021-10-15 20:19:34,639 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 7 transitions, 46 flow [2021-10-15 20:19:34,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 20:19:34,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 20:19:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2021-10-15 20:19:34,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4909090909090909 [2021-10-15 20:19:34,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 27 transitions. [2021-10-15 20:19:34,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 27 transitions. [2021-10-15 20:19:34,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 20:19:34,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 27 transitions. [2021-10-15 20:19:34,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2021-10-15 20:19:34,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2021-10-15 20:19:34,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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) [2021-10-15 20:19:34,645 INFO L186 Difference]: Start difference. First operand has 11 places, 8 transitions, 34 flow. Second operand 5 states and 27 transitions. [2021-10-15 20:19:34,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 7 transitions, 46 flow [2021-10-15 20:19:34,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 7 transitions, 42 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 20:19:34,648 INFO L242 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2021-10-15 20:19:34,648 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=11, PETRI_DIFFERENCE_MINUEND_FLOW=25, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2021-10-15 20:19:34,649 INFO L334 CegarLoopForPetriNet]: 6 programPoint places, 6 predicate places. [2021-10-15 20:19:34,649 INFO L470 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2021-10-15 20:19:34,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 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) [2021-10-15 20:19:34,652 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 20:19:34,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 20:19:34,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 20:19:34,886 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 20:19:34,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:19:34 BoogieIcfgContainer [2021-10-15 20:19:34,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 20:19:34,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 20:19:34,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 20:19:34,899 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 20:19:34,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 08:19:32" (3/4) ... [2021-10-15 20:19:34,904 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 20:19:34,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 20:19:34,932 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 20:19:34,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:19:34,933 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 20:19:34,974 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 20:19:34,974 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 20:19:34,977 INFO L168 Benchmark]: Toolchain (without parser) took 3101.53 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 62.4 MB in the beginning and 87.3 MB in the end (delta: -24.9 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2021-10-15 20:19:34,977 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 92.3 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:19:34,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.04 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 62.2 MB in the beginning and 102.8 MB in the end (delta: -40.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:19:34,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.01 ms. Allocated memory is still 125.8 MB. Free memory was 102.8 MB in the beginning and 101.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:19:34,980 INFO L168 Benchmark]: Boogie Preprocessor took 44.73 ms. Allocated memory is still 125.8 MB. Free memory was 101.2 MB in the beginning and 100.2 MB in the end (delta: 991.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 20:19:34,981 INFO L168 Benchmark]: RCFGBuilder took 466.35 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 91.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:19:34,982 INFO L168 Benchmark]: TraceAbstraction took 2034.88 ms. Allocated memory is still 125.8 MB. Free memory was 91.3 MB in the beginning and 89.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2021-10-15 20:19:34,982 INFO L168 Benchmark]: Witness Printer took 75.97 ms. Allocated memory is still 125.8 MB. Free memory was 89.8 MB in the beginning and 87.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 20:19:34,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 92.3 MB. Free memory is still 45.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 392.04 ms. Allocated memory was 92.3 MB in the beginning and 125.8 MB in the end (delta: 33.6 MB). Free memory was 62.2 MB in the beginning and 102.8 MB in the end (delta: -40.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.01 ms. Allocated memory is still 125.8 MB. Free memory was 102.8 MB in the beginning and 101.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.73 ms. Allocated memory is still 125.8 MB. Free memory was 101.2 MB in the beginning and 100.2 MB in the end (delta: 991.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 466.35 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 91.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2034.88 ms. Allocated memory is still 125.8 MB. Free memory was 91.3 MB in the beginning and 89.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. * Witness Printer took 75.97 ms. Allocated memory is still 125.8 MB. Free memory was 89.8 MB in the beginning and 87.3 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 10]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 6.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1917.1ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 207.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 56.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4 SDtfs, 3 SDslu, 4 SDs, 0 SdLazy, 19 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 155.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=1, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.4ms SsaConstructionTime, 228.9ms SatisfiabilityAnalysisTime, 859.6ms InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 6 NumberOfNonLiveVariables, 63 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/4 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 RESULT: Ultimate proved your program to be correct! [2021-10-15 20:19:35,062 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4d0dbc3-fe51-4732-8446-1f780fdc33db/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...