./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/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 d9400e596554654cba171fba2677dfdba32dbe39 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:26:29,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:26:29,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:26:29,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:26:29,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:26:29,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:26:29,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:26:29,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:26:29,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:26:29,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:26:29,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:26:29,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:26:29,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:26:29,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:26:29,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:26:29,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:26:29,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:26:29,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:26:29,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:26:29,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:26:29,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:26:29,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:26:29,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:26:29,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:26:29,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:26:29,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:26:29,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:26:29,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:26:29,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:26:29,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:26:29,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:26:29,875 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:26:29,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:26:29,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:26:29,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:26:29,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:26:29,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:26:29,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:26:29,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:26:29,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:26:29,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:26:29,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:26:29,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:26:29,918 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:26:29,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:26:29,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:26:29,921 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:26:29,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:26:29,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:26:29,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:26:29,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:26:29,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:26:29,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:26:29,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:26:29,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:26:29,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:26:29,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:26:29,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:26:29,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:26:29,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:26:29,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:26:29,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:26:29,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:26:29,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:26:29,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:26:29,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:26:29,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:26:29,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:26:29,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:26:29,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:26:29,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:26:29,928 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_117f6986-f919-4e9e-b262-6f01e2e9c8a5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9400e596554654cba171fba2677dfdba32dbe39 [2020-12-01 15:26:30,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:26:30,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:26:30,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:26:30,311 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:26:30,314 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:26:30,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c [2020-12-01 15:26:30,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/data/85a1d6cce/cb6d09dac07b4100864aace76b2246a9/FLAG2419e8017 [2020-12-01 15:26:30,960 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:26:30,961 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound20.c [2020-12-01 15:26:30,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/data/85a1d6cce/cb6d09dac07b4100864aace76b2246a9/FLAG2419e8017 [2020-12-01 15:26:31,326 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/data/85a1d6cce/cb6d09dac07b4100864aace76b2246a9 [2020-12-01 15:26:31,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:26:31,333 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:26:31,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:26:31,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:26:31,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:26:31,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ac31d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31, skipping insertion in model container [2020-12-01 15:26:31,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:26:31,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:26:31,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:26:31,601 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:26:31,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:26:31,638 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:26:31,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31 WrapperNode [2020-12-01 15:26:31,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:26:31,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:26:31,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:26:31,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:26:31,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:26:31,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:26:31,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:26:31,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:26:31,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... [2020-12-01 15:26:31,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:26:31,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:26:31,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:26:31,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:26:31,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/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 [2020-12-01 15:26:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:26:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:26:31,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:26:31,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:26:32,202 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:26:32,220 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-01 15:26:32,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:26:32 BoogieIcfgContainer [2020-12-01 15:26:32,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:26:32,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:26:32,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:26:32,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:26:32,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:26:31" (1/3) ... [2020-12-01 15:26:32,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426d1cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:26:32, skipping insertion in model container [2020-12-01 15:26:32,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:26:31" (2/3) ... [2020-12-01 15:26:32,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426d1cbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:26:32, skipping insertion in model container [2020-12-01 15:26:32,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:26:32" (3/3) ... [2020-12-01 15:26:32,241 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound20.c [2020-12-01 15:26:32,271 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:26:32,281 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:26:32,302 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:26:32,365 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:26:32,371 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:26:32,372 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:26:32,372 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:26:32,372 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:26:32,372 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:26:32,373 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:26:32,373 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:26:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-01 15:26:32,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:26:32,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:26:32,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:26:32,403 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:26:32,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:26:32,411 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-12-01 15:26:32,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:26:32,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952308290] [2020-12-01 15:26:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:26:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:26:32,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:26:32,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952308290] [2020-12-01 15:26:32,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:26:32,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:26:32,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377248170] [2020-12-01 15:26:32,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:26:32,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:26:32,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:26:32,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:26:32,694 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-12-01 15:26:32,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:26:32,716 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-12-01 15:26:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:26:32,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-01 15:26:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:26:32,729 INFO L225 Difference]: With dead ends: 35 [2020-12-01 15:26:32,729 INFO L226 Difference]: Without dead ends: 15 [2020-12-01 15:26:32,745 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 [2020-12-01 15:26:32,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-01 15:26:32,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-01 15:26:32,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-01 15:26:32,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-01 15:26:32,800 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-12-01 15:26:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:26:32,801 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-01 15:26:32,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:26:32,803 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-01 15:26:32,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-01 15:26:32,804 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:26:32,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:26:32,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:26:32,805 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:26:32,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:26:32,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-12-01 15:26:32,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:26:32,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106572384] [2020-12-01 15:26:32,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:26:32,868 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:26:32,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482441936] [2020-12-01 15:26:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/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 [2020-12-01 15:26:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:26:33,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 15:26:33,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:26:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:26:33,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106572384] [2020-12-01 15:26:33,222 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:26:33,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482441936] [2020-12-01 15:26:33,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:26:33,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:26:33,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198979668] [2020-12-01 15:26:33,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:26:33,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:26:33,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:26:33,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:26:33,228 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2020-12-01 15:26:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:26:33,351 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-12-01 15:26:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:26:33,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-01 15:26:33,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:26:33,353 INFO L225 Difference]: With dead ends: 25 [2020-12-01 15:26:33,354 INFO L226 Difference]: Without dead ends: 19 [2020-12-01 15:26:33,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:26:33,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-01 15:26:33,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-12-01 15:26:33,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-01 15:26:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-01 15:26:33,362 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-12-01 15:26:33,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:26:33,362 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-01 15:26:33,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:26:33,363 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-01 15:26:33,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:26:33,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:26:33,364 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:26:33,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 15:26:33,590 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:26:33,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:26:33,591 INFO L82 PathProgramCache]: Analyzing trace with hash 637918818, now seen corresponding path program 1 times [2020-12-01 15:26:33,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:26:33,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463683059] [2020-12-01 15:26:33,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:26:33,621 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:26:33,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043204179] [2020-12-01 15:26:33,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/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 [2020-12-01 15:26:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:26:33,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:26:33,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:26:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:26:33,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463683059] [2020-12-01 15:26:33,921 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:26:33,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043204179] [2020-12-01 15:26:33,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:26:33,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 15:26:33,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694739859] [2020-12-01 15:26:33,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:26:33,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:26:33,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:26:33,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:26:33,937 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2020-12-01 15:26:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:26:34,134 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-01 15:26:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 15:26:34,136 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-01 15:26:34,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:26:34,137 INFO L225 Difference]: With dead ends: 28 [2020-12-01 15:26:34,137 INFO L226 Difference]: Without dead ends: 22 [2020-12-01 15:26:34,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-01 15:26:34,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-01 15:26:34,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-12-01 15:26:34,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-01 15:26:34,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-01 15:26:34,150 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-12-01 15:26:34,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:26:34,150 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-01 15:26:34,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:26:34,151 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-01 15:26:34,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-01 15:26:34,152 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:26:34,153 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:26:34,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:26:34,371 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:26:34,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:26:34,371 INFO L82 PathProgramCache]: Analyzing trace with hash -984884012, now seen corresponding path program 2 times [2020-12-01 15:26:34,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:26:34,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026582651] [2020-12-01 15:26:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:26:34,390 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:26:34,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7285873] [2020-12-01 15:26:34,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/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 [2020-12-01 15:26:34,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:26:34,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:26:34,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-01 15:26:34,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:26:41,145 WARN L197 SmtUtils]: Spent 6.41 s on a formula simplification. DAG size of input: 24 DAG size of output: 14 [2020-12-01 15:26:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:26:41,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026582651] [2020-12-01 15:26:41,225 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:26:41,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7285873] [2020-12-01 15:26:41,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:26:41,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 15:26:41,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200025495] [2020-12-01 15:26:41,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:26:41,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:26:41,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:26:41,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:26:41,229 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2020-12-01 15:26:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:26:42,138 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-12-01 15:26:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 15:26:42,139 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-12-01 15:26:42,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:26:42,140 INFO L225 Difference]: With dead ends: 31 [2020-12-01 15:26:42,141 INFO L226 Difference]: Without dead ends: 25 [2020-12-01 15:26:42,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:26:42,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-01 15:26:42,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-12-01 15:26:42,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-01 15:26:42,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-01 15:26:42,149 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2020-12-01 15:26:42,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:26:42,150 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-01 15:26:42,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:26:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-01 15:26:42,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:26:42,151 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:26:42,152 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:26:42,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:26:42,367 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:26:42,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:26:42,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1752108766, now seen corresponding path program 3 times [2020-12-01 15:26:42,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:26:42,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930300385] [2020-12-01 15:26:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:26:42,385 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:26:42,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725032207] [2020-12-01 15:26:42,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:26:45,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-01 15:26:45,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:26:45,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-01 15:26:45,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:26:45,517 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-12-01 15:26:46,074 WARN L197 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-12-01 15:27:02,557 WARN L197 SmtUtils]: Spent 16.41 s on a formula simplification. DAG size of input: 28 DAG size of output: 27 [2020-12-01 15:27:11,454 WARN L197 SmtUtils]: Spent 8.59 s on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2020-12-01 15:27:11,479 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:27:11,493 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:27:11,522 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:27:11,538 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 15:27:11,601 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:27:11,625 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:27:11,634 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:27:11,642 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-01 15:27:29,559 WARN L197 SmtUtils]: Spent 10.68 s on a formula simplification that was a NOOP. DAG size: 41 [2020-12-01 15:27:35,658 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse2 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (and (<= 0 ULTIMATE.start_main_~z~0) (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse1 (- 1)) ULTIMATE.start_main_~z~0) 0) (<= ULTIMATE.start_main_~z~0 20) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 .cse2) .cse1) (+ (* .cse1 ULTIMATE.start_main_~z~0) 1)) (not (= ULTIMATE.start_main_~z~0 0)) (not (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))))))) is different from false [2020-12-01 15:27:37,665 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int) (ULTIMATE.start_main_~y~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse2 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (and (<= 0 ULTIMATE.start_main_~z~0) (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (= (mod (+ .cse1 (- 1)) ULTIMATE.start_main_~z~0) 0) (<= ULTIMATE.start_main_~z~0 20) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 .cse2) .cse1) (+ (* .cse1 ULTIMATE.start_main_~z~0) 1)) (not (= ULTIMATE.start_main_~z~0 0)) (not (= (+ ULTIMATE.start_main_~x~0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))))))) is different from true [2020-12-01 15:27:37,670 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 15:27:37,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930300385] [2020-12-01 15:27:37,670 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:27:37,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725032207] [2020-12-01 15:27:37,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:27:37,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-01 15:27:37,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104511178] [2020-12-01 15:27:37,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 15:27:37,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:27:37,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 15:27:37,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=81, Unknown=3, NotChecked=18, Total=132 [2020-12-01 15:27:37,673 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 12 states. [2020-12-01 15:28:01,163 WARN L197 SmtUtils]: Spent 18.93 s on a formula simplification. DAG size of input: 36 DAG size of output: 29 [2020-12-01 15:28:19,627 WARN L197 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-12-01 15:30:30,217 WARN L197 SmtUtils]: Spent 1.94 m on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2020-12-01 15:31:14,467 WARN L197 SmtUtils]: Spent 40.03 s on a formula simplification. DAG size of input: 51 DAG size of output: 43 [2020-12-01 15:31:18,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:31:18,920 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-01 15:31:18,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:31:18,923 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-12-01 15:31:18,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:31:18,924 INFO L225 Difference]: With dead ends: 24 [2020-12-01 15:31:18,924 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:31:18,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 247.1s TimeCoverageRelationStatistics Valid=74, Invalid=189, Unknown=13, NotChecked=30, Total=306 [2020-12-01 15:31:18,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:31:18,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:31:18,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:31:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:31:18,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-01 15:31:18,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:31:18,926 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:31:18,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 15:31:18,926 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:31:18,926 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:31:19,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:31:19,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:31:34,244 WARN L197 SmtUtils]: Spent 14.98 s on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-12-01 15:32:41,990 WARN L197 SmtUtils]: Spent 1.13 m on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-12-01 15:32:41,994 INFO L258 CegarLoopResult]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~z~0 20))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) .cse1 (= ULTIMATE.start_main_~y~0 1)) (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse5 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse4 (div .cse2 ULTIMATE.start_main_~z~0))) (and .cse0 (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) .cse3 (= (mod (+ .cse4 (- 1)) ULTIMATE.start_main_~z~0) 0) .cse1 (= (mod .cse5 ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 .cse5) .cse4) (+ (* .cse4 ULTIMATE.start_main_~z~0) 1)) (not (= ULTIMATE.start_main_~z~0 0))))) (and .cse0 .cse3 .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))))) [2020-12-01 15:32:41,994 INFO L262 CegarLoopResult]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2020-12-01 15:32:41,995 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:32:41,995 INFO L262 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:32:41,996 INFO L258 CegarLoopResult]: At program point L15-1(lines 38 39) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~z~0 20))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 1)) (let ((.cse3 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse5 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) (.cse4 (div .cse3 ULTIMATE.start_main_~z~0))) (and .cse0 (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse3 ULTIMATE.start_main_~z~0) 0) .cse1 (= (mod (+ .cse4 (- 1)) ULTIMATE.start_main_~z~0) 0) .cse2 (= (mod .cse5 ULTIMATE.start_main_~z~0) 0) (= (+ (* ULTIMATE.start_main_~z~0 .cse5) .cse4) (+ (* .cse4 ULTIMATE.start_main_~z~0) 1)) (not (= ULTIMATE.start_main_~z~0 0)) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))))) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))))) [2020-12-01 15:32:41,996 INFO L262 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-12-01 15:32:41,996 INFO L265 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: true [2020-12-01 15:32:41,996 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-01 15:32:41,997 INFO L262 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-12-01 15:32:41,997 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:32:41,997 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:32:41,997 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:32:41,997 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-12-01 15:32:41,998 INFO L262 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:32:41,998 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-01 15:32:41,998 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-01 15:32:41,998 INFO L262 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-12-01 15:32:41,998 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:32:41,999 INFO L265 CegarLoopResult]: At program point L46(lines 23 47) the Hoare annotation is: true [2020-12-01 15:32:42,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:32:42 BoogieIcfgContainer [2020-12-01 15:32:42,025 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:32:42,026 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:32:42,026 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:32:42,026 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:32:42,027 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:26:32" (3/4) ... [2020-12-01 15:32:42,031 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:32:42,045 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-01 15:32:42,045 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:32:42,045 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:32:42,046 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:32:42,098 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_117f6986-f919-4e9e-b262-6f01e2e9c8a5/bin/uautomizer/witness.graphml [2020-12-01 15:32:42,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:32:42,101 INFO L168 Benchmark]: Toolchain (without parser) took 370766.79 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 59.0 MB in the beginning and 58.3 MB in the end (delta: 775.9 kB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:42,101 INFO L168 Benchmark]: CDTParser took 0.46 ms. Allocated memory is still 90.2 MB. Free memory was 49.7 MB in the beginning and 49.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:32:42,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.72 ms. Allocated memory is still 90.2 MB. Free memory was 58.7 MB in the beginning and 67.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:42,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.15 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:42,104 INFO L168 Benchmark]: Boogie Preprocessor took 26.73 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:32:42,105 INFO L168 Benchmark]: RCFGBuilder took 514.68 ms. Allocated memory is still 90.2 MB. Free memory was 64.4 MB in the beginning and 52.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:42,106 INFO L168 Benchmark]: TraceAbstraction took 369801.16 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 51.9 MB in the beginning and 60.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:42,106 INFO L168 Benchmark]: Witness Printer took 73.24 ms. Allocated memory is still 109.1 MB. Free memory was 60.4 MB in the beginning and 58.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:32:42,111 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46 ms. Allocated memory is still 90.2 MB. Free memory was 49.7 MB in the beginning and 49.6 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.72 ms. Allocated memory is still 90.2 MB. Free memory was 58.7 MB in the beginning and 67.0 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.15 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.73 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 514.68 ms. Allocated memory is still 90.2 MB. Free memory was 64.4 MB in the beginning and 52.3 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 369801.16 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 51.9 MB in the beginning and 60.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 40.4 MB. Max. memory is 16.1 GB. * Witness Printer took 73.24 ms. Allocated memory is still 109.1 MB. Free memory was 60.4 MB in the beginning and 58.3 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: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: 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: 35]: Loop Invariant Derived loop invariant: ((((0 <= z && x == 1) && z <= 20) && y == 1) || ((((((((0 <= z && y % z == 0) && (x + -1) % z == 0) && 1 == cond) && ((x + -1) / z + -1) % z == 0) && z <= 20) && y / z % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0))) || ((((0 <= z && 1 == cond) && z <= 20) && z == y) && x == z + 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((0 <= z && x == 1) && 1 == cond) && z <= 20) && y == 1) || (((((((((0 <= z && y % z == 0) && (x + -1) % z == 0) && 1 == cond) && ((x + -1) / z + -1) % z == 0) && z <= 20) && y / z % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)) && z * y + x == z * x + 1)) || ((((0 <= z && 1 == cond) && z <= 20) && z == y) && x == z + 1) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 286.7s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 222.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 82.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 77 SDslu, 116 SDs, 0 SdLazy, 174 SolverSat, 53 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 18.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 254.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 210 HoareAnnotationTreeSize, 4 FomulaSimplifications, 198 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 305 FormulaSimplificationTreeSizeReductionInter, 82.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 59.6s InterpolantComputationTime, 63 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 2 QuantifiedInterpolants, 11927 SizeOfPredicates, 39 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 110 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 6/24 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...