./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.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_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/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 8ebb4762c1ec628ec4a8477bc1d35427dd36abdd ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:19:19,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:19:19,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:19:19,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:19:19,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:19:19,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:19:19,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:19:19,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:19:19,944 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:19:19,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:19:19,951 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:19:19,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:19:19,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:19:19,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:19:19,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:19:19,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:19:19,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:19:19,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:19:19,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:19:19,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:19:19,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:19:19,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:19:19,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:19:19,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:19:19,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:19:19,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:19:19,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:19:19,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:19:19,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:19:19,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:19:19,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:19:19,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:19:19,994 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:19:19,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:19:19,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:19:19,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:19:19,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:19:19,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:19:19,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:19:19,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:19:19,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:19:20,001 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:19:20,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:19:20,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:19:20,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:19:20,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:19:20,041 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:19:20,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:19:20,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:19:20,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:19:20,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:19:20,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:19:20,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:19:20,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:19:20,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:19:20,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:19:20,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:19:20,045 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:19:20,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:19:20,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:19:20,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:19:20,046 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:19:20,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:19:20,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:19:20,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:19:20,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:19:20,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:19:20,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:19:20,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:19:20,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:19:20,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:19:20,048 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_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ebb4762c1ec628ec4a8477bc1d35427dd36abdd [2020-11-28 03:19:20,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:19:20,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:19:20,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:19:20,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:19:20,319 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:19:20,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.c [2020-11-28 03:19:20,399 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/data/ebbaf4b87/ea2fb77dd52241e99a909d32917940fa/FLAGdc8337f8d [2020-11-28 03:19:20,964 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:19:20,965 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound1.c [2020-11-28 03:19:20,976 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/data/ebbaf4b87/ea2fb77dd52241e99a909d32917940fa/FLAGdc8337f8d [2020-11-28 03:19:21,318 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/data/ebbaf4b87/ea2fb77dd52241e99a909d32917940fa [2020-11-28 03:19:21,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:19:21,322 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:19:21,324 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:21,324 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:19:21,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:19:21,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5c4eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21, skipping insertion in model container [2020-11-28 03:19:21,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:19:21,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:19:21,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:21,585 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:19:21,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:19:21,633 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:19:21,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21 WrapperNode [2020-11-28 03:19:21,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:19:21,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:21,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:19:21,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:19:21,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:19:21,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:19:21,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:19:21,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:19:21,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,682 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... [2020-11-28 03:19:21,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:19:21,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:19:21,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:19:21,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:19:21,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/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 [2020-11-28 03:19:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:19:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:19:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:19:21,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:19:22,263 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:19:22,264 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-28 03:19:22,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:22 BoogieIcfgContainer [2020-11-28 03:19:22,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:19:22,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:19:22,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:19:22,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:19:22,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:19:21" (1/3) ... [2020-11-28 03:19:22,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75798b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:22, skipping insertion in model container [2020-11-28 03:19:22,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:19:21" (2/3) ... [2020-11-28 03:19:22,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75798b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:19:22, skipping insertion in model container [2020-11-28 03:19:22,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:22" (3/3) ... [2020-11-28 03:19:22,278 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound1.c [2020-11-28 03:19:22,289 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:19:22,294 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:19:22,306 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:19:22,345 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:19:22,346 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:19:22,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:19:22,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:19:22,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:19:22,347 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:19:22,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:19:22,348 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:19:22,366 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-28 03:19:22,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:19:22,372 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:22,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:22,374 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:22,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:22,387 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-11-28 03:19:22,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:22,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490580264] [2020-11-28 03:19:22,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:22,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490580264] [2020-11-28 03:19:22,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:22,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:19:22,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232411394] [2020-11-28 03:19:22,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:19:22,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:22,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:19:22,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:19:22,592 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-11-28 03:19:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:22,611 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-11-28 03:19:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:19:22,612 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:19:22,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:22,620 INFO L225 Difference]: With dead ends: 43 [2020-11-28 03:19:22,620 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 03:19:22,624 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 [2020-11-28 03:19:22,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 03:19:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 03:19:22,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:19:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-28 03:19:22,666 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2020-11-28 03:19:22,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:22,666 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-28 03:19:22,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:19:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-28 03:19:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:19:22,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:22,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:22,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:19:22,669 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:22,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:22,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-11-28 03:19:22,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:22,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988777976] [2020-11-28 03:19:22,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:22,716 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:22,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705511573] [2020-11-28 03:19:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/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 [2020-11-28 03:19:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:22,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:19:22,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:22,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988777976] [2020-11-28 03:19:22,917 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:22,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705511573] [2020-11-28 03:19:22,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:22,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:19:22,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87463115] [2020-11-28 03:19:22,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:19:22,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:22,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:19:22,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:19:22,920 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 4 states. [2020-11-28 03:19:23,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:23,042 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-11-28 03:19:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:23,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:19:23,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:23,044 INFO L225 Difference]: With dead ends: 32 [2020-11-28 03:19:23,044 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 03:19:23,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:19:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 03:19:23,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2020-11-28 03:19:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 03:19:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-28 03:19:23,052 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 11 [2020-11-28 03:19:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:23,053 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-28 03:19:23,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:19:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-28 03:19:23,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:19:23,055 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:23,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:23,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:19:23,274 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:23,275 INFO L82 PathProgramCache]: Analyzing trace with hash -936571807, now seen corresponding path program 1 times [2020-11-28 03:19:23,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:23,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496142155] [2020-11-28 03:19:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:23,297 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:23,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278656752] [2020-11-28 03:19:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:23,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:19:23,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:23,418 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:19:23,418 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:23,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496142155] [2020-11-28 03:19:23,444 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:23,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278656752] [2020-11-28 03:19:23,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:19:23,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:19:23,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767017689] [2020-11-28 03:19:23,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:19:23,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:23,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:19:23,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:19:23,447 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-11-28 03:19:23,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:23,557 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-11-28 03:19:23,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:19:23,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-28 03:19:23,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:23,559 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:19:23,559 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 03:19:23,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:19:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 03:19:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2020-11-28 03:19:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:19:23,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-11-28 03:19:23,564 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 14 [2020-11-28 03:19:23,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:23,565 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-11-28 03:19:23,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:19:23,565 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-11-28 03:19:23,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:19:23,565 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:19:23,566 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:19:23,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:23,778 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:19:23,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:19:23,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1947257600, now seen corresponding path program 1 times [2020-11-28 03:19:23,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:19:23,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172132433] [2020-11-28 03:19:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:19:23,793 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:19:23,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707824807] [2020-11-28 03:19:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:19:23,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-28 03:19:23,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:19:23,935 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 03:19:23,935 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:23,990 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-28 03:19:23,991 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:24,405 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:19:24,422 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:19:24,445 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:19:24,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:19:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:19:24,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172132433] [2020-11-28 03:19:24,562 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:19:24,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707824807] [2020-11-28 03:19:24,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:19:24,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-28 03:19:24,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389199586] [2020-11-28 03:19:24,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:19:24,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:19:24,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:19:24,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:19:24,564 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 12 states. [2020-11-28 03:19:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:19:24,925 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2020-11-28 03:19:24,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:19:24,925 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-11-28 03:19:24,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:19:24,926 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:19:24,926 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:19:24,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:19:24,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:19:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:19:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:19:24,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:19:24,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-11-28 03:19:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:19:24,928 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:19:24,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:19:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:19:24,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:19:25,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:19:25,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:19:25,307 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-11-28 03:19:25,471 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-11-28 03:19:25,473 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-11-28 03:19:25,473 INFO L277 CegarLoopResult]: At program point L48(lines 20 49) the Hoare annotation is: true [2020-11-28 03:19:25,473 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:19:25,473 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:19:25,473 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:19:25,474 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-11-28 03:19:25,474 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:19:25,474 INFO L274 CegarLoopResult]: For program point L13(lines 13 16) no Hoare annotation was computed. [2020-11-28 03:19:25,474 INFO L270 CegarLoopResult]: At program point L13-1(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~b~0 1)) (.cse1 (<= 0 ULTIMATE.start_main_~a~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= ULTIMATE.start_main_~a~0 1)) (.cse4 (<= 1 ULTIMATE.start_main_~b~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~z~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse4) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 2)) (= ULTIMATE.start_main_~y~0 (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 .cse4))) [2020-11-28 03:19:25,474 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 16) no Hoare annotation was computed. [2020-11-28 03:19:25,474 INFO L277 CegarLoopResult]: At program point L13-3(lines 12 18) the Hoare annotation is: true [2020-11-28 03:19:25,474 INFO L274 CegarLoopResult]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-11-28 03:19:25,474 INFO L274 CegarLoopResult]: For program point L9-1(lines 9 11) no Hoare annotation was computed. [2020-11-28 03:19:25,474 INFO L274 CegarLoopResult]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2020-11-28 03:19:25,474 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~b~0 1)) (.cse1 (<= 0 ULTIMATE.start_main_~a~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= ULTIMATE.start_main_~a~0 1)) (.cse4 (<= 1 ULTIMATE.start_main_~b~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~z~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse4) (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~z~0) .cse0 (= ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 2)) (= ULTIMATE.start_main_~y~0 (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1 .cse2 .cse3 .cse4))) [2020-11-28 03:19:25,475 INFO L274 CegarLoopResult]: For program point L34-3(lines 34 45) no Hoare annotation was computed. [2020-11-28 03:19:25,475 INFO L274 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2020-11-28 03:19:25,475 INFO L274 CegarLoopResult]: For program point L14-1(lines 14 15) no Hoare annotation was computed. [2020-11-28 03:19:25,475 INFO L274 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-11-28 03:19:25,475 INFO L274 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-11-28 03:19:25,475 INFO L274 CegarLoopResult]: For program point L39(lines 39 42) no Hoare annotation was computed. [2020-11-28 03:19:25,475 INFO L274 CegarLoopResult]: For program point L10-4(line 10) no Hoare annotation was computed. [2020-11-28 03:19:25,475 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2020-11-28 03:19:25,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:19:25 BoogieIcfgContainer [2020-11-28 03:19:25,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:19:25,493 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:19:25,493 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:19:25,493 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:19:25,494 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:19:22" (3/4) ... [2020-11-28 03:19:25,496 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:19:25,510 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-11-28 03:19:25,511 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:19:25,511 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:19:25,512 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:19:25,561 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c5e74f62-7d3a-4dc9-9b0b-0dc630fa6e7e/bin/uautomizer/witness.graphml [2020-11-28 03:19:25,561 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:19:25,562 INFO L168 Benchmark]: Toolchain (without parser) took 4239.85 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 68.3 MB in the beginning and 87.5 MB in the end (delta: -19.1 MB). Peak memory consumption was 1.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:25,563 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 36.3 MB in the beginning and 36.3 MB in the end (delta: 34.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:25,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.30 ms. Allocated memory is still 98.6 MB. Free memory was 68.1 MB in the beginning and 76.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:25,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 98.6 MB. Free memory was 76.3 MB in the beginning and 74.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:25,564 INFO L168 Benchmark]: Boogie Preprocessor took 23.00 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:19:25,565 INFO L168 Benchmark]: RCFGBuilder took 572.57 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 60.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:25,566 INFO L168 Benchmark]: TraceAbstraction took 3223.77 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 59.5 MB in the beginning and 89.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:25,566 INFO L168 Benchmark]: Witness Printer took 68.67 ms. Allocated memory is still 119.5 MB. Free memory was 89.5 MB in the beginning and 87.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:19:25,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory was 36.3 MB in the beginning and 36.3 MB in the end (delta: 34.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 310.30 ms. Allocated memory is still 98.6 MB. Free memory was 68.1 MB in the beginning and 76.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.92 ms. Allocated memory is still 98.6 MB. Free memory was 76.3 MB in the beginning and 74.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.00 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 572.57 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 60.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3223.77 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 59.5 MB in the beginning and 89.5 MB in the end (delta: -30.1 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. * Witness Printer took 68.67 ms. Allocated memory is still 119.5 MB. Free memory was 89.5 MB in the beginning and 87.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((b <= 1 && a == x) && 0 <= a) && cond == 1) && a <= 1) && z == 0) && b == y) && 1 <= b) || ((((((((a == z && b <= 1) && x == z * 2) && y == (b + -1) / 2) && 1 <= cond) && 0 <= a) && cond == 1) && a <= 1) && 1 <= b) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((((b <= 1 && a == x) && 1 == cond) && 0 <= a) && cond == 1) && a <= 1) && z == 0) && b == y) && 1 <= b) || ((((((((a == z && b <= 1) && x == z * 2) && y == (b + -1) / 2) && 1 <= cond) && 0 <= a) && cond == 1) && a <= 1) && 1 <= b) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 63 SDslu, 52 SDs, 0 SdLazy, 148 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 10 NumberOfFragments, 125 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 28 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4650 SizeOfPredicates, 24 NumberOfNonLiveVariables, 224 ConjunctsInSsa, 52 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2 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...