./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i --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_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/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 7a6eaea59c0b35225373a459ea8360d703e45820 .................................................................................................................................................................................................................................................................................................................................................................. 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 03:11:25,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:11:25,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:11:25,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:11:25,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:11:25,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:11:25,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:11:25,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:11:25,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:11:25,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:11:25,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:11:25,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:11:25,827 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:11:25,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:11:25,832 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:11:25,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:11:25,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:11:25,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:11:25,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:11:25,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:11:25,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:11:25,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:11:25,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:11:25,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:11:25,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:11:25,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:11:25,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:11:25,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:11:25,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:11:25,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:11:25,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:11:25,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:11:25,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:11:25,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:11:25,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:11:25,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:11:25,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:11:25,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:11:25,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:11:25,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:11:25,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:11:25,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:11:25,922 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:11:25,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:11:25,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:11:25,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:11:25,925 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:11:25,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:11:25,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:11:25,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:11:25,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:11:25,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:11:25,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:11:25,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:11:25,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:11:25,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:11:25,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:11:25,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:11:25,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:11:25,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:11:25,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:11:25,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:11:25,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:11:25,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:11:25,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:11:25,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:11:25,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:11:25,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:11:25,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:11:25,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:11:25,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:11:25,931 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_06639702-070b-46a0-9568-abb8d6d768e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a6eaea59c0b35225373a459ea8360d703e45820 [2020-11-28 03:11:26,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:11:26,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:11:26,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:11:26,281 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:11:26,282 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:11:26,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i [2020-11-28 03:11:26,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/data/a4b75fbaa/9fe6174dfc8c45418e15807c7b23b2b5/FLAG0a782fcd4 [2020-11-28 03:11:26,935 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:11:26,936 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/sv-benchmarks/c/loop-zilu/benchmark26_linear.i [2020-11-28 03:11:26,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/data/a4b75fbaa/9fe6174dfc8c45418e15807c7b23b2b5/FLAG0a782fcd4 [2020-11-28 03:11:27,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/data/a4b75fbaa/9fe6174dfc8c45418e15807c7b23b2b5 [2020-11-28 03:11:27,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:11:27,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:11:27,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:27,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:11:27,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:11:27,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2fc817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27, skipping insertion in model container [2020-11-28 03:11:27,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:11:27,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:11:27,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:27,553 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:11:27,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:11:27,582 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:11:27,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27 WrapperNode [2020-11-28 03:11:27,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:11:27,584 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:27,584 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:11:27,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:11:27,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:11:27,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:11:27,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:11:27,617 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:11:27,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,627 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,630 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... [2020-11-28 03:11:27,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:11:27,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:11:27,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:11:27,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:11:27,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/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 03:11:27,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:11:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:11:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:11:27,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:11:28,035 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:11:28,035 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:11:28,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:28 BoogieIcfgContainer [2020-11-28 03:11:28,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:11:28,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:11:28,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:11:28,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:11:28,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:11:27" (1/3) ... [2020-11-28 03:11:28,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b5ce7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:28, skipping insertion in model container [2020-11-28 03:11:28,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:11:27" (2/3) ... [2020-11-28 03:11:28,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27b5ce7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:11:28, skipping insertion in model container [2020-11-28 03:11:28,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:28" (3/3) ... [2020-11-28 03:11:28,049 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark26_linear.i [2020-11-28 03:11:28,060 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:11:28,065 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:11:28,077 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:11:28,112 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:11:28,112 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:11:28,112 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:11:28,112 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:11:28,112 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:11:28,112 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:11:28,112 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:11:28,113 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:11:28,124 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-28 03:11:28,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:11:28,128 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:28,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:28,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:28,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:28,133 INFO L82 PathProgramCache]: Analyzing trace with hash 185199154, now seen corresponding path program 1 times [2020-11-28 03:11:28,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:28,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799496839] [2020-11-28 03:11:28,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:28,270 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 03:11:28,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799496839] [2020-11-28 03:11:28,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:28,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:11:28,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680847153] [2020-11-28 03:11:28,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:11:28,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:28,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:11:28,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:11:28,293 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-28 03:11:28,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:28,308 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-11-28 03:11:28,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:11:28,309 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:11:28,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:28,318 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:11:28,319 INFO L226 Difference]: Without dead ends: 9 [2020-11-28 03:11:28,321 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 03:11:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-28 03:11:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-28 03:11:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-28 03:11:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-28 03:11:28,353 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-11-28 03:11:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:28,354 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-28 03:11:28,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:11:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-28 03:11:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:11:28,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:28,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:28,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:11:28,355 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:28,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:28,356 INFO L82 PathProgramCache]: Analyzing trace with hash 181505070, now seen corresponding path program 1 times [2020-11-28 03:11:28,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:28,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31849185] [2020-11-28 03:11:28,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:28,451 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 03:11:28,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31849185] [2020-11-28 03:11:28,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:11:28,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:11:28,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924370395] [2020-11-28 03:11:28,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:11:28,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:28,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:11:28,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:11:28,455 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-11-28 03:11:28,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:28,489 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-28 03:11:28,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:11:28,491 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-28 03:11:28,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:28,491 INFO L225 Difference]: With dead ends: 15 [2020-11-28 03:11:28,491 INFO L226 Difference]: Without dead ends: 10 [2020-11-28 03:11:28,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:11:28,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-28 03:11:28,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 03:11:28,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 03:11:28,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-28 03:11:28,496 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-11-28 03:11:28,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:28,496 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-28 03:11:28,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:11:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-28 03:11:28,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:11:28,497 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:11:28,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:11:28,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:11:28,497 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:11:28,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:11:28,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1383312870, now seen corresponding path program 1 times [2020-11-28 03:11:28,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:11:28,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565184062] [2020-11-28 03:11:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:11:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:28,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565184062] [2020-11-28 03:11:28,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787944608] [2020-11-28 03:11:28,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/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 03:11:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:11:28,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:11:28,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:11:28,852 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:11:28,861 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:11:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:11:28,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:11:28,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 03:11:28,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111020644] [2020-11-28 03:11:28,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:11:28,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:11:28,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:11:28,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:11:28,916 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 7 states. [2020-11-28 03:11:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:11:28,969 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2020-11-28 03:11:28,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:11:28,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-28 03:11:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:11:28,969 INFO L225 Difference]: With dead ends: 10 [2020-11-28 03:11:28,969 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:11:28,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:11:28,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:11:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:11:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:11:28,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:11:28,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-11-28 03:11:28,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:11:28,971 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:11:28,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:11:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:11:28,972 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:11:29,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:11:29,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:11:29,247 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:11:29,247 INFO L277 CegarLoopResult]: At program point L27(lines 19 28) the Hoare annotation is: true [2020-11-28 03:11:29,248 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 25) the Hoare annotation is: (< ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 1)) [2020-11-28 03:11:29,248 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 25) no Hoare annotation was computed. [2020-11-28 03:11:29,248 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 03:11:29,248 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 03:11:29,248 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-28 03:11:29,248 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:11:29,248 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:11:29,249 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:11:29,249 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-28 03:11:29,249 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-28 03:11:29,249 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-28 03:11:29,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:11:29 BoogieIcfgContainer [2020-11-28 03:11:29,275 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:11:29,276 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:11:29,276 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:11:29,276 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:11:29,277 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:11:28" (3/4) ... [2020-11-28 03:11:29,280 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:11:29,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 03:11:29,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:11:29,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:11:29,291 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:11:29,359 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_06639702-070b-46a0-9568-abb8d6d768e2/bin/uautomizer/witness.graphml [2020-11-28 03:11:29,359 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:11:29,361 INFO L168 Benchmark]: Toolchain (without parser) took 2043.22 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 75.3 MB in the beginning and 82.1 MB in the end (delta: -6.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:29,362 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:29,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.78 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 80.1 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:29,363 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.00 ms. Allocated memory is still 102.8 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:11:29,364 INFO L168 Benchmark]: Boogie Preprocessor took 20.53 ms. Allocated memory is still 102.8 MB. Free memory was 78.8 MB in the beginning and 77.9 MB in the end (delta: 969.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:29,365 INFO L168 Benchmark]: RCFGBuilder took 398.77 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 67.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:29,366 INFO L168 Benchmark]: TraceAbstraction took 1236.99 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 66.9 MB in the beginning and 84.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:29,367 INFO L168 Benchmark]: Witness Printer took 83.53 ms. Allocated memory is still 134.2 MB. Free memory was 84.3 MB in the beginning and 82.1 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:11:29,372 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 102.8 MB. Free memory is still 62.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.78 ms. Allocated memory is still 102.8 MB. Free memory was 75.3 MB in the beginning and 80.1 MB in the end (delta: -4.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.00 ms. Allocated memory is still 102.8 MB. Free memory was 80.1 MB in the beginning and 78.8 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.53 ms. Allocated memory is still 102.8 MB. Free memory was 78.8 MB in the beginning and 77.9 MB in the end (delta: 969.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 398.77 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 67.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1236.99 ms. Allocated memory was 102.8 MB in the beginning and 134.2 MB in the end (delta: 31.5 MB). Free memory was 66.9 MB in the beginning and 84.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 16.5 MB. Max. memory is 16.1 GB. * Witness Printer took 83.53 ms. Allocated memory is still 134.2 MB. Free memory was 84.3 MB in the beginning and 82.1 MB in the end (delta: 2.2 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: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x < y + 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 3 SDslu, 9 SDs, 0 SdLazy, 17 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 6 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 550 SizeOfPredicates, 4 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 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...