./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD --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 2f79720b54b4b9430b2efff386b59c4cac88edea0ef8f0ba223c5daccad25b87 .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:47:08,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:47:08,388 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:47:08,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:47:08,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:47:08,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:47:08,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:47:08,465 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:47:08,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:47:08,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:47:08,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:47:08,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:47:08,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:47:08,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:47:08,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:47:08,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:47:08,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:47:08,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:47:08,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:47:08,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:47:08,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:47:08,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:47:08,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:47:08,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:47:08,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:47:08,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:47:08,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:47:08,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:47:08,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:47:08,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:47:08,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:47:08,511 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:47:08,512 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:47:08,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:47:08,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:47:08,516 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:47:08,517 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:47:08,518 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:47:08,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:47:08,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:47:08,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:47:08,527 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:47:08,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:47:08,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:47:08,585 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:47:08,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:47:08,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:47:08,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:47:08,588 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:47:08,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:47:08,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:47:08,589 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:47:08,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:47:08,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:47:08,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:47:08,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:47:08,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:47:08,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:47:08,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:47:08,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:47:08,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:47:08,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:47:08,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:47:08,594 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:47:08,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:08,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:47:08,595 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:47:08,595 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:47:08,595 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:47:08,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:47:08,596 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:47:08,598 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:47:08,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:47:08,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:47:08,599 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_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f79720b54b4b9430b2efff386b59c4cac88edea0ef8f0ba223c5daccad25b87 [2021-10-28 23:47:08,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:47:08,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:47:08,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:47:08,940 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:47:08,941 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:47:08,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-10-28 23:47:09,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/data/40e005ea8/dbf80dea8ab3494e88e1291abef6709f/FLAGe1de0806a [2021-10-28 23:47:09,548 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:47:09,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-10-28 23:47:09,559 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/data/40e005ea8/dbf80dea8ab3494e88e1291abef6709f/FLAGe1de0806a [2021-10-28 23:47:09,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/data/40e005ea8/dbf80dea8ab3494e88e1291abef6709f [2021-10-28 23:47:09,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:47:09,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:47:09,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:09,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:47:09,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:47:09,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:09" (1/1) ... [2021-10-28 23:47:09,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f15e87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:09, skipping insertion in model container [2021-10-28 23:47:09,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:47:09" (1/1) ... [2021-10-28 23:47:09,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:47:09,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:47:10,145 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_551605fa-de4c-474a-aa81-30a9a8bc8180/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-10-28 23:47:10,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:10,160 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:47:10,179 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_551605fa-de4c-474a-aa81-30a9a8bc8180/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-10-28 23:47:10,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:47:10,195 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:47:10,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10 WrapperNode [2021-10-28 23:47:10,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:47:10,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:47:10,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:47:10,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:47:10,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:47:10,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:47:10,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:47:10,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:47:10,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:47:10,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:47:10,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:47:10,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:47:10,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (1/1) ... [2021-10-28 23:47:10,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:47:10,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:10,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:47:10,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:47:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:47:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:47:10,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:47:10,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:47:10,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:47:10,630 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 23:47:10,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:10 BoogieIcfgContainer [2021-10-28 23:47:10,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:47:10,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:47:10,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:47:10,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:47:10,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:47:09" (1/3) ... [2021-10-28 23:47:10,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9161f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:10, skipping insertion in model container [2021-10-28 23:47:10,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:47:10" (2/3) ... [2021-10-28 23:47:10,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9161f2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:47:10, skipping insertion in model container [2021-10-28 23:47:10,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:10" (3/3) ... [2021-10-28 23:47:10,664 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-10-28 23:47:10,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:47:10,672 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:47:10,723 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:47:10,731 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 [2021-10-28 23:47:10,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:47:10,746 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) [2021-10-28 23:47:10,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 23:47:10,752 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:10,752 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:10,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:10,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:10,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1269629357, now seen corresponding path program 1 times [2021-10-28 23:47:10,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:10,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975131848] [2021-10-28 23:47:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:10,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:10,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:11,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:11,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:11,049 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975131848] [2021-10-28 23:47:11,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975131848] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:11,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:11,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:47:11,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432055006] [2021-10-28 23:47:11,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:47:11,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:11,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:47:11,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:47:11,077 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 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-10-28 23:47:11,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:11,157 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-10-28 23:47:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:47:11,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 23:47:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:11,170 INFO L225 Difference]: With dead ends: 30 [2021-10-28 23:47:11,170 INFO L226 Difference]: Without dead ends: 12 [2021-10-28 23:47:11,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:47:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-28 23:47:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-28 23:47:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-28 23:47:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-28 23:47:11,209 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2021-10-28 23:47:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:11,210 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-28 23:47:11,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 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) [2021-10-28 23:47:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-28 23:47:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:47:11,212 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:11,212 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:11,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:47:11,213 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:11,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash 341011600, now seen corresponding path program 1 times [2021-10-28 23:47:11,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:11,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610673872] [2021-10-28 23:47:11,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:11,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:11,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:11,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:11,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610673872] [2021-10-28 23:47:11,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610673872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:11,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800281284] [2021-10-28 23:47:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:11,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 23:47:11,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:47:11,319 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 23:47:11,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 23:47:11,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:11,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 23:47:11,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:47:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:47:11,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800281284] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 23:47:11,745 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 23:47:11,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-10-28 23:47:11,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719163109] [2021-10-28 23:47:11,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:47:11,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:11,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:47:11,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:47:11,750 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:11,809 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-28 23:47:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:47:11,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 23:47:11,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:11,811 INFO L225 Difference]: With dead ends: 17 [2021-10-28 23:47:11,811 INFO L226 Difference]: Without dead ends: 14 [2021-10-28 23:47:11,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:47:11,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-28 23:47:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-28 23:47:11,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2021-10-28 23:47:11,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-10-28 23:47:11,816 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2021-10-28 23:47:11,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:11,817 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-10-28 23:47:11,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:47:11,818 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-10-28 23:47:11,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 23:47:11,818 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:47:11,819 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:47:11,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:47:12,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-28 23:47:12,039 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:47:12,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:47:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1292544691, now seen corresponding path program 2 times [2021-10-28 23:47:12,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:47:12,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508824702] [2021-10-28 23:47:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:47:12,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:47:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:47:12,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 23:47:12,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:47:12,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508824702] [2021-10-28 23:47:12,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508824702] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:47:12,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:47:12,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:47:12,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742179160] [2021-10-28 23:47:12,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:47:12,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:47:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:47:12,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:47:12,115 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-28 23:47:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:47:12,136 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-10-28 23:47:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:47:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 23:47:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:47:12,137 INFO L225 Difference]: With dead ends: 14 [2021-10-28 23:47:12,137 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:47:12,139 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:47:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:47:12,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:47:12,167 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) [2021-10-28 23:47:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:47:12,167 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-10-28 23:47:12,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:47:12,168 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:47:12,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-28 23:47:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:47:12,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:47:12,171 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:47:12,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:47:12,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:47:12,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:47:12,218 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:47:12,240 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:47:12,240 INFO L853 garLoopResultBuilder]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0) [2021-10-28 23:47:12,241 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 66) no Hoare annotation was computed. [2021-10-28 23:47:12,241 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 71) no Hoare annotation was computed. [2021-10-28 23:47:12,241 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:47:12,241 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:47:12,241 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:47:12,241 INFO L857 garLoopResultBuilder]: For program point L26(lines 26 72) no Hoare annotation was computed. [2021-10-28 23:47:12,242 INFO L857 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2021-10-28 23:47:12,242 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) no Hoare annotation was computed. [2021-10-28 23:47:12,242 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 64) no Hoare annotation was computed. [2021-10-28 23:47:12,242 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 73) no Hoare annotation was computed. [2021-10-28 23:47:12,243 INFO L853 garLoopResultBuilder]: At program point L70(lines 14 74) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 50) 0) (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~0 0))) [2021-10-28 23:47:12,246 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1] [2021-10-28 23:47:12,248 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:47:12,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:47:12 BoogieIcfgContainer [2021-10-28 23:47:12,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:47:12,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:47:12,281 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:47:12,281 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:47:12,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:47:10" (3/4) ... [2021-10-28 23:47:12,285 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:47:12,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 23:47:12,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:47:12,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:47:12,300 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:47:12,343 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:47:12,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:47:12,345 INFO L168 Benchmark]: Toolchain (without parser) took 2408.42 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 47.9 MB in the beginning and 93.5 MB in the end (delta: -45.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:47:12,346 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 54.5 MB in the beginning and 54.5 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:47:12,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.47 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 47.7 MB in the beginning and 98.0 MB in the end (delta: -50.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:12,347 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.04 ms. Allocated memory is still 121.6 MB. Free memory was 98.0 MB in the beginning and 96.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:12,348 INFO L168 Benchmark]: Boogie Preprocessor took 20.27 ms. Allocated memory is still 121.6 MB. Free memory was 96.5 MB in the beginning and 95.7 MB in the end (delta: 777.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:47:12,349 INFO L168 Benchmark]: RCFGBuilder took 375.46 ms. Allocated memory is still 121.6 MB. Free memory was 95.7 MB in the beginning and 86.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:12,349 INFO L168 Benchmark]: TraceAbstraction took 1646.31 ms. Allocated memory is still 121.6 MB. Free memory was 85.4 MB in the beginning and 96.1 MB in the end (delta: -10.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:47:12,350 INFO L168 Benchmark]: Witness Printer took 62.93 ms. Allocated memory is still 121.6 MB. Free memory was 96.1 MB in the beginning and 93.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:47:12,354 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 81.8 MB. Free memory was 54.5 MB in the beginning and 54.5 MB in the end (delta: 27.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 259.47 ms. Allocated memory was 81.8 MB in the beginning and 121.6 MB in the end (delta: 39.8 MB). Free memory was 47.7 MB in the beginning and 98.0 MB in the end (delta: -50.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.04 ms. Allocated memory is still 121.6 MB. Free memory was 98.0 MB in the beginning and 96.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.27 ms. Allocated memory is still 121.6 MB. Free memory was 96.5 MB in the beginning and 95.7 MB in the end (delta: 777.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 375.46 ms. Allocated memory is still 121.6 MB. Free memory was 95.7 MB in the beginning and 86.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1646.31 ms. Allocated memory is still 121.6 MB. Free memory was 85.4 MB in the beginning and 96.1 MB in the end (delta: -10.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 62.93 ms. Allocated memory is still 121.6 MB. Free memory was 96.1 MB in the beginning and 93.5 MB in the end (delta: 2.6 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, 0.0s 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: 57]: 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: 1.5s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 17 SDslu, 57 SDs, 0 SdLazy, 58 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=2, InterpolantAutomatonStates: 17, 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 8 NumberOfFragments, 15 HoareAnnotationTreeSize, 2 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 143 SizeOfPredicates, 3 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 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: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: main__x + 50 <= 0 || !(__VERIFIER_assert__cond == 0) RESULT: Ultimate proved your program to be correct! [2021-10-28 23:47:12,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_551605fa-de4c-474a-aa81-30a9a8bc8180/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...