./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/nested5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt --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 88d908807c562516d59e3074a7f6cea9889fd89a .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:15:03,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:15:03,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:15:03,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:15:03,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:15:03,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:15:03,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:15:03,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:15:03,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:15:03,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:15:03,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:15:03,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:15:03,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:15:03,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:15:03,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:15:03,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:15:03,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:15:03,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:15:03,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:15:03,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:15:03,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:15:03,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:15:03,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:15:03,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:15:03,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:15:03,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:15:03,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:15:03,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:15:03,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:15:03,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:15:03,659 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:15:03,660 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:15:03,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:15:03,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:15:03,667 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:15:03,667 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:15:03,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:15:03,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:15:03,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:15:03,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:15:03,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:15:03,673 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:15:03,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:15:03,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:15:03,728 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:15:03,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:15:03,731 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:15:03,731 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:15:03,732 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:15:03,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:15:03,733 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:15:03,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:15:03,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:15:03,735 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:15:03,735 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:15:03,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:15:03,736 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:15:03,736 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:15:03,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:15:03,737 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:15:03,737 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:15:03,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:15:03,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:15:03,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:15:03,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:15:03,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:15:03,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:15:03,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:15:03,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:15:03,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:15:03,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:15:03,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:15:03,744 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_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 88d908807c562516d59e3074a7f6cea9889fd89a [2021-10-13 00:15:04,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:15:04,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:15:04,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:15:04,142 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:15:04,143 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:15:04,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-10-13 00:15:04,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/data/385e2bb98/61614c7f6e544bf086725ca331449655/FLAGd48b946ec [2021-10-13 00:15:04,729 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:15:04,730 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/sv-benchmarks/c/loops-crafted-1/nested5-1.c [2021-10-13 00:15:04,737 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/data/385e2bb98/61614c7f6e544bf086725ca331449655/FLAGd48b946ec [2021-10-13 00:15:05,107 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/data/385e2bb98/61614c7f6e544bf086725ca331449655 [2021-10-13 00:15:05,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:15:05,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:15:05,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:15:05,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:15:05,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:15:05,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e3fcdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05, skipping insertion in model container [2021-10-13 00:15:05,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:15:05,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:15:05,355 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_f506d3d2-b84d-4734-b7da-5eb835a6af4f/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2021-10-13 00:15:05,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:15:05,389 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:15:05,403 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_f506d3d2-b84d-4734-b7da-5eb835a6af4f/sv-benchmarks/c/loops-crafted-1/nested5-1.c[321,334] [2021-10-13 00:15:05,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:15:05,424 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:15:05,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05 WrapperNode [2021-10-13 00:15:05,425 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:15:05,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:15:05,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:15:05,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:15:05,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:15:05,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:15:05,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:15:05,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:15:05,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,494 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,496 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:15:05,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:15:05,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:15:05,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:15:05,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (1/1) ... [2021-10-13 00:15:05,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:15:05,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:05,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:15:05,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:15:05,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:15:05,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:15:05,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:15:05,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:15:05,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:15:05,943 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-13 00:15:05,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:15:05 BoogieIcfgContainer [2021-10-13 00:15:05,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:15:05,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:15:05,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:15:05,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:15:05,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:15:05" (1/3) ... [2021-10-13 00:15:05,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f656b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:15:05, skipping insertion in model container [2021-10-13 00:15:05,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:15:05" (2/3) ... [2021-10-13 00:15:05,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f656b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:15:05, skipping insertion in model container [2021-10-13 00:15:05,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:15:05" (3/3) ... [2021-10-13 00:15:05,957 INFO L111 eAbstractionObserver]: Analyzing ICFG nested5-1.c [2021-10-13 00:15:05,963 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:15:05,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 00:15:06,021 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:15:06,029 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=FINITE_AUTOMATA, 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 [2021-10-13 00:15:06,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 00:15:06,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 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) [2021-10-13 00:15:06,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:15:06,073 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:06,074 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:06,082 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:15:06,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:06,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1296464707, now seen corresponding path program 1 times [2021-10-13 00:15:06,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:06,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342410836] [2021-10-13 00:15:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:06,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:06,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:06,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342410836] [2021-10-13 00:15:06,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342410836] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:15:06,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:15:06,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 00:15:06,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946251446] [2021-10-13 00:15:06,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 00:15:06,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:06,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:15:06,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:15:06,445 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:06,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:06,485 INFO L93 Difference]: Finished difference Result 51 states and 80 transitions. [2021-10-13 00:15:06,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:15:06,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-13 00:15:06,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:06,497 INFO L225 Difference]: With dead ends: 51 [2021-10-13 00:15:06,498 INFO L226 Difference]: Without dead ends: 25 [2021-10-13 00:15:06,501 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:15:06,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-13 00:15:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 17. [2021-10-13 00:15:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2021-10-13 00:15:06,539 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2021-10-13 00:15:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:06,540 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2021-10-13 00:15:06,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2021-10-13 00:15:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 00:15:06,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:06,541 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:06,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:15:06,542 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:15:06,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:06,543 INFO L82 PathProgramCache]: Analyzing trace with hash -308834241, now seen corresponding path program 1 times [2021-10-13 00:15:06,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:06,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852536439] [2021-10-13 00:15:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:06,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:06,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:06,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:06,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852536439] [2021-10-13 00:15:06,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852536439] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:06,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621654770] [2021-10-13 00:15:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:06,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:06,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:06,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:06,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:15:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:06,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:15:06,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:06,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621654770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:06,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:15:06,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-10-13 00:15:06,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537234358] [2021-10-13 00:15:06,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:15:06,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:06,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:15:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:15:06,896 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-13 00:15:06,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:06,942 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2021-10-13 00:15:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:15:06,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) Word has length 12 [2021-10-13 00:15:06,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:06,946 INFO L225 Difference]: With dead ends: 42 [2021-10-13 00:15:06,946 INFO L226 Difference]: Without dead ends: 27 [2021-10-13 00:15:06,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:15:06,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-13 00:15:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2021-10-13 00:15:06,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2021-10-13 00:15:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-10-13 00:15:06,952 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2021-10-13 00:15:06,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:06,952 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-10-13 00:15:06,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2021-10-13 00:15:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-10-13 00:15:06,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 00:15:06,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:06,954 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:06,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:07,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:07,175 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:15:07,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:07,175 INFO L82 PathProgramCache]: Analyzing trace with hash -383728831, now seen corresponding path program 2 times [2021-10-13 00:15:07,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:07,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514931028] [2021-10-13 00:15:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:07,176 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:07,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:07,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514931028] [2021-10-13 00:15:07,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514931028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:07,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965315219] [2021-10-13 00:15:07,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:15:07,301 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:07,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:07,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:07,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:15:07,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:15:07,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:07,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:15:07,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:07,542 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:07,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965315219] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:07,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:15:07,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-13 00:15:07,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678360187] [2021-10-13 00:15:07,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:15:07,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:07,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:15:07,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:15:07,546 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-13 00:15:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:07,578 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2021-10-13 00:15:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:15:07,579 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 14 [2021-10-13 00:15:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:07,580 INFO L225 Difference]: With dead ends: 46 [2021-10-13 00:15:07,580 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 00:15:07,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:15:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 00:15:07,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 21. [2021-10-13 00:15:07,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:15:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-10-13 00:15:07,585 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2021-10-13 00:15:07,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:07,586 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-10-13 00:15:07,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-13 00:15:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-10-13 00:15:07,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-13 00:15:07,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:15:07,587 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:15:07,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:07,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:07,801 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 00:15:07,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:15:07,802 INFO L82 PathProgramCache]: Analyzing trace with hash 657014211, now seen corresponding path program 3 times [2021-10-13 00:15:07,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:15:07,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536397103] [2021-10-13 00:15:07,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:15:07,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:15:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:15:07,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:15:07,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:15:07,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536397103] [2021-10-13 00:15:07,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536397103] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:15:07,962 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105841246] [2021-10-13 00:15:07,962 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:15:07,962 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:07,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:15:07,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:15:08,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:15:08,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:15:08,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:15:08,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:15:08,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:15:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-13 00:15:08,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105841246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:15:08,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:15:08,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-10-13 00:15:08,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706114517] [2021-10-13 00:15:08,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:15:08,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:15:08,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:15:08,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:15:08,532 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-10-13 00:15:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:15:09,210 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2021-10-13 00:15:09,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:15:09,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) Word has length 16 [2021-10-13 00:15:09,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:15:09,211 INFO L225 Difference]: With dead ends: 36 [2021-10-13 00:15:09,212 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:15:09,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 641.2ms TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:15:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:15:09,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:15:09,213 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) [2021-10-13 00:15:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:15:09,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-10-13 00:15:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:15:09,214 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:15:09,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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) [2021-10-13 00:15:09,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:15:09,215 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:15:09,217 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:15:09,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:15:09,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:15:09,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:15:09,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:15:09,446 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:15:09,450 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:15:09,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:15:09,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:15:09,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:15:09,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:15:10,109 INFO L857 garLoopResultBuilder]: For program point L23-2(line 23) no Hoare annotation was computed. [2021-10-13 00:15:10,110 INFO L853 garLoopResultBuilder]: At program point L23-3(line 23) the Hoare annotation is: (or (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (= ULTIMATE.start_main_~v~0 0)) [2021-10-13 00:15:10,110 INFO L857 garLoopResultBuilder]: For program point L23-4(line 23) no Hoare annotation was computed. [2021-10-13 00:15:10,110 INFO L857 garLoopResultBuilder]: For program point L19-2(lines 19 25) no Hoare annotation was computed. [2021-10-13 00:15:10,111 INFO L853 garLoopResultBuilder]: At program point L19-3(lines 19 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-13 00:15:10,111 INFO L857 garLoopResultBuilder]: For program point L19-4(lines 19 25) no Hoare annotation was computed. [2021-10-13 00:15:10,112 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-13 00:15:10,112 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:15:10,112 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:15:10,112 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:15:10,113 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-10-13 00:15:10,113 INFO L857 garLoopResultBuilder]: For program point L20-2(lines 20 25) no Hoare annotation was computed. [2021-10-13 00:15:10,113 INFO L853 garLoopResultBuilder]: At program point L20-3(lines 20 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-13 00:15:10,114 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:15:10,114 INFO L857 garLoopResultBuilder]: For program point L21-2(lines 21 25) no Hoare annotation was computed. [2021-10-13 00:15:10,114 INFO L853 garLoopResultBuilder]: At program point L21-3(lines 21 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-13 00:15:10,115 INFO L860 garLoopResultBuilder]: At program point L26(lines 12 27) the Hoare annotation is: true [2021-10-13 00:15:10,115 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 25) the Hoare annotation is: (or (< (mod ULTIMATE.start_main_~v~0 4294967296) 10) (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-13 00:15:10,115 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-13 00:15:10,116 INFO L853 garLoopResultBuilder]: At program point L6-2(lines 1 27) the Hoare annotation is: (and (< ULTIMATE.start___VERIFIER_assert_~cond 4) (<= 10 (mod ULTIMATE.start_main_~v~0 4294967296)) (< (mod (+ ULTIMATE.start_main_~v~0 4294967295) 4294967296) 10) (let ((.cse0 (* ULTIMATE.start___VERIFIER_assert_~cond (- 1)))) (< (div (+ (div (+ .cse0 10) 4) (* (div (+ (- 4294967306) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) (- 1073741824)) (+ (div (+ (div (+ .cse0 8589934591) 4) (* (div (+ (- 1) ULTIMATE.start___VERIFIER_assert_~cond) (- 4)) (- 1))) 1073741824) 1))) (<= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-13 00:15:10,121 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:15:10,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:15:10 BoogieIcfgContainer [2021-10-13 00:15:10,147 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:15:10,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:15:10,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:15:10,148 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:15:10,149 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:15:05" (3/4) ... [2021-10-13 00:15:10,153 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:15:10,165 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 00:15:10,165 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:15:10,166 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:15:10,166 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:15:10,214 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:15:10,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:15:10,217 INFO L168 Benchmark]: Toolchain (without parser) took 5103.97 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 47.2 MB in the beginning and 68.3 MB in the end (delta: -21.1 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:15:10,218 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:15:10,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.11 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 47.0 MB in the beginning and 83.8 MB in the end (delta: -36.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:15:10,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.43 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:15:10,220 INFO L168 Benchmark]: Boogie Preprocessor took 27.48 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 81.2 MB in the end (delta: 935.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:15:10,221 INFO L168 Benchmark]: RCFGBuilder took 448.30 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 71.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:15:10,221 INFO L168 Benchmark]: TraceAbstraction took 4199.84 ms. Allocated memory is still 109.1 MB. Free memory was 70.8 MB in the beginning and 71.6 MB in the end (delta: -807.8 kB). Peak memory consumption was 725.8 kB. Max. memory is 16.1 GB. [2021-10-13 00:15:10,222 INFO L168 Benchmark]: Witness Printer took 67.03 ms. Allocated memory is still 109.1 MB. Free memory was 71.0 MB in the beginning and 68.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:15:10,226 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 83.9 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.11 ms. Allocated memory was 83.9 MB in the beginning and 109.1 MB in the end (delta: 25.2 MB). Free memory was 47.0 MB in the beginning and 83.8 MB in the end (delta: -36.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.43 ms. Allocated memory is still 109.1 MB. Free memory was 83.8 MB in the beginning and 82.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.48 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 81.2 MB in the end (delta: 935.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 448.30 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 71.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4199.84 ms. Allocated memory is still 109.1 MB. Free memory was 70.8 MB in the beginning and 71.6 MB in the end (delta: -807.8 kB). Peak memory consumption was 725.8 kB. Max. memory is 16.1 GB. * Witness Printer took 67.03 ms. Allocated memory is still 109.1 MB. Free memory was 71.0 MB in the beginning and 68.3 MB in the end (delta: 2.7 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: 7]: 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, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4102.8ms, OverallIterations: 4, TraceHistogramMax: 3, EmptinessCheckTime: 17.7ms, AutomataDifference: 845.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 683.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 81 SDtfs, 95 SDslu, 116 SDs, 0 SdLazy, 86 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 204.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 715.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.3ms AutomataMinimizationTime, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 26 NumberOfFragments, 296 HoareAnnotationTreeSize, 7 FomulaSimplifications, 251 FormulaSimplificationTreeSizeReduction, 45.3ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 628.8ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 47.2ms SsaConstructionTime, 301.9ms SatisfiabilityAnalysisTime, 1092.9ms InterpolantComputationTime, 94 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 260 SizeOfPredicates, 5 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 9/28 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: 21]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((cond < 4 && 10 <= v % 4294967296) && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (v + 4294967295) % 4294967296 < 10 || v == 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: v % 4294967296 < 10 || (((cond < 4 && (v + 4294967295) % 4294967296 < 10) && ((cond * -1 + 10) / 4 + (-4294967306 + cond) / -4 * -1) / -1073741824 < ((cond * -1 + 8589934591) / 4 + (-1 + cond) / -4 * -1) / 1073741824 + 1) && 0 <= cond) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:15:10,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f506d3d2-b84d-4734-b7da-5eb835a6af4f/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...