./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer --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 d50c732daf4010be138a5b2a7e8fc6e324d115c0 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:30:55,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:30:55,950 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:30:56,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:30:56,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:30:56,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:30:56,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:30:56,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:30:56,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:30:56,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:30:56,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:30:56,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:30:56,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:30:56,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:30:56,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:30:56,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:30:56,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:30:56,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:30:56,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:30:56,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:30:56,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:30:56,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:30:56,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:30:56,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:30:56,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:30:56,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:30:56,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:30:56,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:30:56,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:30:56,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:30:56,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:30:56,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:30:56,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:30:56,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:30:56,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:30:56,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:30:56,101 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:30:56,101 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:30:56,101 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:30:56,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:30:56,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:30:56,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:30:56,148 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:30:56,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:30:56,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:30:56,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:30:56,151 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:30:56,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:30:56,151 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:30:56,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:30:56,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:30:56,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:30:56,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:30:56,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:30:56,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:30:56,153 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:30:56,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:30:56,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:30:56,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:30:56,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:30:56,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:30:56,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:30:56,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:30:56,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:30:56,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:30:56,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:30:56,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:30:56,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:30:56,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:30:56,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:30:56,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:30:56,157 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-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d50c732daf4010be138a5b2a7e8fc6e324d115c0 [2020-11-29 23:30:56,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:30:56,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:30:56,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:30:56,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:30:56,413 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:30:56,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2020-11-29 23:30:56,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/data/093d9738c/535eb44ff6434e9399c16a25fa0f66c4/FLAG9eaf6695b [2020-11-29 23:30:56,934 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:30:56,942 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2020-11-29 23:30:56,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/data/093d9738c/535eb44ff6434e9399c16a25fa0f66c4/FLAG9eaf6695b [2020-11-29 23:30:57,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/data/093d9738c/535eb44ff6434e9399c16a25fa0f66c4 [2020-11-29 23:30:57,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:30:57,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:30:57,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:30:57,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:30:57,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:30:57,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6ca5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57, skipping insertion in model container [2020-11-29 23:30:57,305 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:30:57,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:30:57,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:30:57,531 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:30:57,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:30:57,570 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:30:57,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57 WrapperNode [2020-11-29 23:30:57,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:30:57,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:30:57,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:30:57,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:30:57,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,611 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:30:57,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:30:57,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:30:57,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:30:57,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... [2020-11-29 23:30:57,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:30:57,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:30:57,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:30:57,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:30:57,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:30:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:30:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:30:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:30:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:31:08,867 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:31:08,867 INFO L298 CfgBuilder]: Removed 44 assume(true) statements. [2020-11-29 23:31:08,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:31:08 BoogieIcfgContainer [2020-11-29 23:31:08,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:31:08,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:31:08,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:31:08,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:31:08,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:30:57" (1/3) ... [2020-11-29 23:31:08,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ea132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:31:08, skipping insertion in model container [2020-11-29 23:31:08,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:30:57" (2/3) ... [2020-11-29 23:31:08,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ea132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:31:08, skipping insertion in model container [2020-11-29 23:31:08,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:31:08" (3/3) ... [2020-11-29 23:31:08,878 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound1.c [2020-11-29 23:31:08,889 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:31:08,897 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-11-29 23:31:08,909 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-11-29 23:31:08,933 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:31:08,933 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:31:08,933 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:31:08,934 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:31:08,934 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:31:08,934 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:31:08,934 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:31:08,934 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:31:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-11-29 23:31:08,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:31:08,954 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:08,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:08,955 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:08,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:08,961 INFO L82 PathProgramCache]: Analyzing trace with hash -577938953, now seen corresponding path program 1 times [2020-11-29 23:31:08,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:08,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721688556] [2020-11-29 23:31:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:09,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:09,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721688556] [2020-11-29 23:31:09,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:09,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:31:09,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038684720] [2020-11-29 23:31:09,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:31:09,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:09,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:31:09,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:31:09,109 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-11-29 23:31:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:09,157 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2020-11-29 23:31:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:31:09,158 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 23:31:09,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:09,196 INFO L225 Difference]: With dead ends: 97 [2020-11-29 23:31:09,196 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 23:31:09,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:31:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 23:31:09,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-29 23:31:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-29 23:31:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-11-29 23:31:09,263 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 9 [2020-11-29 23:31:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:09,264 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-11-29 23:31:09,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:31:09,265 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-11-29 23:31:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 23:31:09,267 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:09,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:09,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:31:09,268 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:09,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:09,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1987056657, now seen corresponding path program 1 times [2020-11-29 23:31:09,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:09,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207604808] [2020-11-29 23:31:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:09,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207604808] [2020-11-29 23:31:09,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:09,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:31:09,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157572853] [2020-11-29 23:31:09,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:31:09,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:09,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:31:09,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:31:09,385 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 4 states. [2020-11-29 23:31:09,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:09,419 INFO L93 Difference]: Finished difference Result 87 states and 94 transitions. [2020-11-29 23:31:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:31:09,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 23:31:09,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:09,423 INFO L225 Difference]: With dead ends: 87 [2020-11-29 23:31:09,423 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 23:31:09,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:31:09,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 23:31:09,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-29 23:31:09,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-29 23:31:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-11-29 23:31:09,443 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2020-11-29 23:31:09,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:09,443 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-11-29 23:31:09,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:31:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-11-29 23:31:09,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:31:09,445 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:09,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:09,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:31:09,447 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:09,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1420419469, now seen corresponding path program 1 times [2020-11-29 23:31:09,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:09,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494949674] [2020-11-29 23:31:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:09,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:09,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494949674] [2020-11-29 23:31:09,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:09,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:31:09,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292869285] [2020-11-29 23:31:09,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:31:09,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:09,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:31:09,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:31:09,522 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 5 states. [2020-11-29 23:31:09,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:09,570 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-11-29 23:31:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:31:09,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-29 23:31:09,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:09,572 INFO L225 Difference]: With dead ends: 62 [2020-11-29 23:31:09,572 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 23:31:09,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:31:09,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 23:31:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 23:31:09,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 23:31:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-29 23:31:09,576 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 11 [2020-11-29 23:31:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:09,576 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-29 23:31:09,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:31:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-29 23:31:09,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:31:09,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:31:09,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:31:09,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:31:09,578 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:31:09,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:31:09,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1083307667, now seen corresponding path program 1 times [2020-11-29 23:31:09,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:31:09,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821114138] [2020-11-29 23:31:09,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:31:09,594 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:31:09,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106642730] [2020-11-29 23:31:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:31:09,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:31:09,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:31:09,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:31:09,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821114138] [2020-11-29 23:31:09,712 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:31:09,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106642730] [2020-11-29 23:31:09,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:31:09,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:31:09,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728556528] [2020-11-29 23:31:09,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:31:09,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:31:09,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:31:09,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:31:09,715 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 4 states. [2020-11-29 23:31:09,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:31:09,775 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-11-29 23:31:09,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:31:09,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 23:31:09,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:31:09,778 INFO L225 Difference]: With dead ends: 23 [2020-11-29 23:31:09,778 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:31:09,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:31:09,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:31:09,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:31:09,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:31:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:31:09,779 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-29 23:31:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:31:09,779 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:31:09,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:31:09,779 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:31:09,780 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:31:09,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:31:09,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 23:31:10,125 INFO L277 CegarLoopResult]: At program point L60(lines 20 61) the Hoare annotation is: true [2020-11-29 23:31:10,125 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:10,126 INFO L274 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-11-29 23:31:10,126 INFO L274 CegarLoopResult]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2020-11-29 23:31:10,126 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:10,126 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 23:31:10,126 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 23:31:10,126 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:10,126 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: false [2020-11-29 23:31:10,126 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:10,126 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: false [2020-11-29 23:31:10,127 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:10,127 INFO L270 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: false [2020-11-29 23:31:10,127 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:10,127 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: false [2020-11-29 23:31:10,127 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:10,127 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: false [2020-11-29 23:31:10,127 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:10,127 INFO L270 CegarLoopResult]: At program point L12-11(lines 46 47) the Hoare annotation is: false [2020-11-29 23:31:10,128 INFO L274 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:10,128 INFO L270 CegarLoopResult]: At program point L12-13(lines 11 17) the Hoare annotation is: (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0)) [2020-11-29 23:31:10,128 INFO L274 CegarLoopResult]: For program point L12-14(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:10,128 INFO L270 CegarLoopResult]: At program point L12-15(lines 11 17) the Hoare annotation is: (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0)) [2020-11-29 23:31:10,128 INFO L274 CegarLoopResult]: For program point L12-16(lines 12 15) no Hoare annotation was computed. [2020-11-29 23:31:10,128 INFO L277 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-11-29 23:31:10,128 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:10,128 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:10,129 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:10,129 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:10,129 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:10,129 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:10,129 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:10,129 INFO L274 CegarLoopResult]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:10,129 INFO L274 CegarLoopResult]: For program point L38(lines 38 56) no Hoare annotation was computed. [2020-11-29 23:31:10,129 INFO L274 CegarLoopResult]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:10,129 INFO L274 CegarLoopResult]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2020-11-29 23:31:10,130 INFO L274 CegarLoopResult]: For program point L38-2(lines 38 56) no Hoare annotation was computed. [2020-11-29 23:31:10,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:10,130 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2020-11-29 23:31:10,130 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 35) the Hoare annotation is: (and (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 0 ~counter~0) (= ULTIMATE.start_main_~p~0 0)) [2020-11-29 23:31:10,130 INFO L274 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-11-29 23:31:10,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:10,130 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 23:31:10,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:10,130 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:10,130 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-29 23:31:10,131 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 23:31:10,131 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:10,131 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-29 23:31:10,131 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-29 23:31:10,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:31:10 BoogieIcfgContainer [2020-11-29 23:31:10,155 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:31:10,156 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:31:10,156 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:31:10,156 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:31:10,156 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:31:08" (3/4) ... [2020-11-29 23:31:10,159 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:31:10,170 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-29 23:31:10,171 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:31:10,171 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:31:10,171 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:31:10,223 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b3a61734-d732-4373-8b02-68f4c1f5dbc3/bin/uautomizer/witness.graphml [2020-11-29 23:31:10,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:31:10,225 INFO L168 Benchmark]: Toolchain (without parser) took 12927.25 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 64.4 MB in the beginning and 83.5 MB in the end (delta: -19.2 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:10,225 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 55.7 MB in the beginning and 55.7 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:31:10,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.47 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 72.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:10,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.80 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 70.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:10,227 INFO L168 Benchmark]: Boogie Preprocessor took 26.02 ms. Allocated memory is still 96.5 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:10,228 INFO L168 Benchmark]: RCFGBuilder took 11230.75 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 50.0 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:10,228 INFO L168 Benchmark]: TraceAbstraction took 1284.19 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 49.6 MB in the beginning and 87.7 MB in the end (delta: -38.1 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:10,229 INFO L168 Benchmark]: Witness Printer took 67.75 ms. Allocated memory is still 117.4 MB. Free memory was 87.7 MB in the beginning and 83.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:31:10,231 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 55.7 MB in the beginning and 55.7 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.47 ms. Allocated memory is still 96.5 MB. Free memory was 64.2 MB in the beginning and 72.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.80 ms. Allocated memory is still 96.5 MB. Free memory was 72.4 MB in the beginning and 70.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.02 ms. Allocated memory is still 96.5 MB. Free memory was 70.3 MB in the beginning and 69.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11230.75 ms. Allocated memory is still 96.5 MB. Free memory was 69.0 MB in the beginning and 50.0 MB in the end (delta: 19.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1284.19 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 49.6 MB in the beginning and 87.7 MB in the end (delta: -38.1 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. * Witness Printer took 67.75 ms. Allocated memory is still 117.4 MB. Free memory was 87.7 MB in the beginning and 83.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 <= counter && h == 0) && n == r) && 1 <= cond) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((h == 0 && n == r) && 0 <= counter) && p == 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 <= counter && h == 0) && n == r) && 1 <= cond) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 130 SDtfs, 35 SDslu, 121 SDs, 0 SdLazy, 28 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 53 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1232 SizeOfPredicates, 6 NumberOfNonLiveVariables, 66 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...