./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.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_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/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 5691355e15b410e2407124fd7e64eda88df84f74 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:25:28,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:25:28,590 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:25:28,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:25:28,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:25:28,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:25:28,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:25:28,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:25:28,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:25:28,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:25:28,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:25:28,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:25:28,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:25:28,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:25:28,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:25:28,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:25:28,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:25:28,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:25:28,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:25:28,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:25:28,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:25:28,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:25:28,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:25:28,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:25:28,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:25:28,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:25:28,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:25:28,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:25:28,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:25:28,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:25:28,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:25:28,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:25:28,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:25:28,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:25:28,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:25:28,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:25:28,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:25:28,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:25:28,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:25:28,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:25:28,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:25:28,778 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:25:28,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:25:28,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:25:28,836 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:25:28,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:25:28,836 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:25:28,837 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:25:28,837 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:25:28,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:25:28,838 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:25:28,838 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:25:28,839 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:25:28,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:25:28,840 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:25:28,840 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:25:28,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:25:28,841 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:25:28,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:25:28,842 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:25:28,842 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:25:28,842 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:25:28,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:25:28,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:25:28,843 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:25:28,843 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:25:28,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:25:28,844 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:25:28,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:25:28,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:25:28,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:25:28,845 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_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5691355e15b410e2407124fd7e64eda88df84f74 [2020-12-01 15:25:29,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:25:29,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:25:29,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:25:29,256 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:25:29,258 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:25:29,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2020-12-01 15:25:29,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/data/32fb70463/8dde9ba686f1400cb46dbdb2e95054c2/FLAG1e25123ba [2020-12-01 15:25:29,922 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:25:29,923 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound5.c [2020-12-01 15:25:29,931 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/data/32fb70463/8dde9ba686f1400cb46dbdb2e95054c2/FLAG1e25123ba [2020-12-01 15:25:30,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/data/32fb70463/8dde9ba686f1400cb46dbdb2e95054c2 [2020-12-01 15:25:30,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:25:30,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:25:30,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:25:30,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:25:30,304 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:25:30,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30946557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30, skipping insertion in model container [2020-12-01 15:25:30,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:25:30,339 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:25:30,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:25:30,592 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:25:30,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:25:30,630 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:25:30,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30 WrapperNode [2020-12-01 15:25:30,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:25:30,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:25:30,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:25:30,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:25:30,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:25:30,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:25:30,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:25:30,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:25:30,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,683 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... [2020-12-01 15:25:30,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:25:30,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:25:30,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:25:30,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:25:30,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/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 15:25:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:25:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:25:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:25:30,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:25:31,168 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:25:31,168 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-01 15:25:31,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:25:31 BoogieIcfgContainer [2020-12-01 15:25:31,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:25:31,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:25:31,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:25:31,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:25:31,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:25:30" (1/3) ... [2020-12-01 15:25:31,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dad3432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:25:31, skipping insertion in model container [2020-12-01 15:25:31,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:25:30" (2/3) ... [2020-12-01 15:25:31,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dad3432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:25:31, skipping insertion in model container [2020-12-01 15:25:31,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:25:31" (3/3) ... [2020-12-01 15:25:31,180 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound5.c [2020-12-01 15:25:31,200 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:25:31,216 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:25:31,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:25:31,295 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:25:31,295 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:25:31,295 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:25:31,296 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:25:31,296 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:25:31,296 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:25:31,296 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:25:31,296 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:25:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-12-01 15:25:31,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:25:31,326 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:31,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:31,327 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:31,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:31,334 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-12-01 15:25:31,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:31,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866879652] [2020-12-01 15:25:31,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:31,506 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 15:25:31,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866879652] [2020-12-01 15:25:31,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:31,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:25:31,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668932967] [2020-12-01 15:25:31,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:25:31,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:31,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:25:31,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:25:31,534 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2020-12-01 15:25:31,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:31,554 INFO L93 Difference]: Finished difference Result 43 states and 58 transitions. [2020-12-01 15:25:31,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:25:31,556 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-01 15:25:31,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:31,566 INFO L225 Difference]: With dead ends: 43 [2020-12-01 15:25:31,566 INFO L226 Difference]: Without dead ends: 19 [2020-12-01 15:25:31,570 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 15:25:31,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-01 15:25:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-12-01 15:25:31,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-01 15:25:31,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-12-01 15:25:31,608 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 13 [2020-12-01 15:25:31,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:31,609 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-12-01 15:25:31,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:25:31,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-12-01 15:25:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:25:31,610 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:31,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:31,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:25:31,611 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:31,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:31,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-12-01 15:25:31,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:31,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337753339] [2020-12-01 15:25:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:31,644 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:25:31,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270045343] [2020-12-01 15:25:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/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 15:25:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:31,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 15:25:31,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:25:32,106 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 15:25:32,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337753339] [2020-12-01 15:25:32,107 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:25:32,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270045343] [2020-12-01 15:25:32,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:25:32,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 15:25:32,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322893772] [2020-12-01 15:25:32,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:25:32,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:32,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:25:32,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:25:32,112 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-12-01 15:25:32,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:32,264 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-12-01 15:25:32,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:25:32,265 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-01 15:25:32,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:32,266 INFO L225 Difference]: With dead ends: 29 [2020-12-01 15:25:32,266 INFO L226 Difference]: Without dead ends: 23 [2020-12-01 15:25:32,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:25:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-01 15:25:32,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-12-01 15:25:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-01 15:25:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-12-01 15:25:32,274 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-12-01 15:25:32,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:32,274 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-12-01 15:25:32,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:25:32,274 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-12-01 15:25:32,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:25:32,275 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:32,276 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:32,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 15:25:32,486 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:32,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:32,487 INFO L82 PathProgramCache]: Analyzing trace with hash 2132918982, now seen corresponding path program 1 times [2020-12-01 15:25:32,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:32,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857531848] [2020-12-01 15:25:32,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:32,517 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:25:32,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750975859] [2020-12-01 15:25:32,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/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 15:25:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:32,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-01 15:25:32,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:25:32,792 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 15:25:32,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857531848] [2020-12-01 15:25:32,793 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:25:32,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750975859] [2020-12-01 15:25:32,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:25:32,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:25:32,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379640079] [2020-12-01 15:25:32,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:25:32,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:32,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:25:32,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:25:32,796 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2020-12-01 15:25:35,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:35,144 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-12-01 15:25:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:25:35,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-12-01 15:25:35,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:35,146 INFO L225 Difference]: With dead ends: 29 [2020-12-01 15:25:35,146 INFO L226 Difference]: Without dead ends: 27 [2020-12-01 15:25:35,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:25:35,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-01 15:25:35,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-12-01 15:25:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-01 15:25:35,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-01 15:25:35,152 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2020-12-01 15:25:35,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:35,152 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-01 15:25:35,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:25:35,153 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-01 15:25:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:25:35,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:35,154 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:35,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:35,382 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:35,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:35,382 INFO L82 PathProgramCache]: Analyzing trace with hash 2049083668, now seen corresponding path program 1 times [2020-12-01 15:25:35,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:35,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174004693] [2020-12-01 15:25:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:35,414 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:25:35,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528615180] [2020-12-01 15:25:35,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/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 15:25:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:25:35,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-01 15:25:35,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:25:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:25:35,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174004693] [2020-12-01 15:25:35,730 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:25:35,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528615180] [2020-12-01 15:25:35,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:25:35,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 15:25:35,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845529895] [2020-12-01 15:25:35,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:25:35,731 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:35,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:25:35,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:25:35,733 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 8 states. [2020-12-01 15:25:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:25:40,114 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-01 15:25:40,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 15:25:40,115 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-01 15:25:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:25:40,117 INFO L225 Difference]: With dead ends: 24 [2020-12-01 15:25:40,117 INFO L226 Difference]: Without dead ends: 20 [2020-12-01 15:25:40,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:25:40,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-01 15:25:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-12-01 15:25:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-01 15:25:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-01 15:25:40,130 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 19 [2020-12-01 15:25:40,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:25:40,131 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-01 15:25:40,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:25:40,131 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-01 15:25:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:25:40,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:25:40,133 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:25:40,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:25:40,351 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:25:40,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:25:40,352 INFO L82 PathProgramCache]: Analyzing trace with hash 2049123390, now seen corresponding path program 2 times [2020-12-01 15:25:40,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:25:40,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664476096] [2020-12-01 15:25:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:25:40,397 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:25:40,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1749480851] [2020-12-01 15:25:40,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/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 15:25:40,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 15:25:40,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:25:40,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-01 15:25:40,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:25:42,759 WARN L838 $PredicateComparison]: unable to prove that (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) (<= 1 c_ULTIMATE.start_main_~k~0) (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1))) is different from false [2020-12-01 15:25:48,891 WARN L197 SmtUtils]: Spent 4.08 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-01 15:25:49,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-12-01 15:25:49,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664476096] [2020-12-01 15:25:49,017 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:25:49,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749480851] [2020-12-01 15:25:49,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:25:49,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 15:25:49,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071235553] [2020-12-01 15:25:49,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 15:25:49,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:25:49,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 15:25:49,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=53, Unknown=2, NotChecked=14, Total=90 [2020-12-01 15:25:49,020 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 10 states. [2020-12-01 15:26:05,534 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (<= 1 c_ULTIMATE.start_main_~k~0))) (and (<= 2 c_ULTIMATE.start_main_~c~0) (let ((.cse0 (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse0))) .cse1 (= (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) c_ULTIMATE.start_main_~y~0) (or (and .cse1 (= c_ULTIMATE.start_assume_abort_if_not_~cond 1)) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond 0) (< c_ULTIMATE.start_main_~k~0 1))) (= c_ULTIMATE.start_main_~x~0 (+ c_ULTIMATE.start_main_~z~0 1)))) is different from false [2020-12-01 15:26:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:26:16,618 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-12-01 15:26:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 15:26:16,620 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-12-01 15:26:16,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:26:16,621 INFO L225 Difference]: With dead ends: 27 [2020-12-01 15:26:16,623 INFO L226 Difference]: Without dead ends: 25 [2020-12-01 15:26:16,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=56, Invalid=155, Unknown=7, NotChecked=54, Total=272 [2020-12-01 15:26:16,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-01 15:26:16,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-12-01 15:26:16,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-01 15:26:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-12-01 15:26:16,631 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2020-12-01 15:26:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:26:16,632 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-12-01 15:26:16,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 15:26:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-12-01 15:26:16,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 15:26:16,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:26:16,633 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:26:16,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:26:16,850 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:26:16,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:26:16,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1070641094, now seen corresponding path program 3 times [2020-12-01 15:26:16,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:26:16,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787028697] [2020-12-01 15:26:16,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:26:16,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:26:16,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790305981] [2020-12-01 15:26:16,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 15:26:16,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-01 15:26:16,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 15:26:16,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-01 15:26:16,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:26:17,797 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-12-01 15:26:17,826 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-01 15:26:17,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 15:26:17,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787028697] [2020-12-01 15:26:17,866 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:26:17,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790305981] [2020-12-01 15:26:17,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 15:26:17,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 15:26:17,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895307119] [2020-12-01 15:26:17,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:26:17,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:26:17,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:26:17,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:26:17,869 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-12-01 15:26:32,663 WARN L197 SmtUtils]: Spent 4.38 s on a formula simplification that was a NOOP. DAG size: 36 [2020-12-01 15:27:05,430 WARN L197 SmtUtils]: Spent 26.25 s on a formula simplification that was a NOOP. DAG size: 43 [2020-12-01 15:27:35,959 WARN L197 SmtUtils]: Spent 26.46 s on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2020-12-01 15:27:44,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:27:44,358 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-12-01 15:27:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:27:44,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-01 15:27:44,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:27:44,384 INFO L225 Difference]: With dead ends: 23 [2020-12-01 15:27:44,384 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:27:44,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 72.5s TimeCoverageRelationStatistics Valid=42, Invalid=62, Unknown=6, NotChecked=0, Total=110 [2020-12-01 15:27:44,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:27:44,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:27:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:27:44,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:27:44,385 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-12-01 15:27:44,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:27:44,385 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:27:44,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:27:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:27:44,386 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:27:44,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-01 15:27:44,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:27:47,005 WARN L197 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-12-01 15:27:48,772 WARN L197 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-12-01 15:27:48,776 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-12-01 15:27:48,776 INFO L258 CegarLoopResult]: At program point L36-2(lines 36 46) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (<= 1 ULTIMATE.start_main_~k~0)) (.cse2 (<= 1 ULTIMATE.start_main_~c~0)) (.cse3 (<= ULTIMATE.start_main_~z~0 5)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) .cse2 .cse3 .cse4) (let ((.cse6 (+ ULTIMATE.start_main_~x~0 (- 1)))) (let ((.cse5 (div .cse6 ULTIMATE.start_main_~z~0))) (and .cse0 (= (+ (* .cse5 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse5 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0))) (= (mod .cse6 ULTIMATE.start_main_~z~0) 0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse5) (* .cse5 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) .cse1 (not (= ULTIMATE.start_main_~z~0 0)) .cse2 .cse3 .cse4))))) [2020-12-01 15:27:48,777 INFO L262 CegarLoopResult]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2020-12-01 15:27:48,777 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:27:48,777 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:27:48,777 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:27:48,777 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-12-01 15:27:48,778 INFO L262 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-12-01 15:27:48,778 INFO L258 CegarLoopResult]: At program point L16-1(lines 39 40) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~k~0)) (.cse4 (<= 1 ULTIMATE.start_main_~c~0)) (.cse5 (<= ULTIMATE.start_main_~z~0 5)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) .cse4 .cse5 .cse6) (let ((.cse7 (div (+ ULTIMATE.start_main_~x~0 (- 1)) ULTIMATE.start_main_~z~0))) (and .cse0 (= (+ (* .cse7 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~z~0 (* .cse7 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0))) .cse1 .cse2 .cse3 (= (mod (+ (* ULTIMATE.start_main_~z~0 .cse7) (* .cse7 (- 1)) 1) ULTIMATE.start_main_~z~0) 0) .cse4 .cse5 .cse6)))) [2020-12-01 15:27:48,778 INFO L262 CegarLoopResult]: For program point L16-2(lines 16 19) no Hoare annotation was computed. [2020-12-01 15:27:48,779 INFO L265 CegarLoopResult]: At program point L16-3(lines 15 21) the Hoare annotation is: true [2020-12-01 15:27:48,779 INFO L262 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-12-01 15:27:48,779 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-12-01 15:27:48,779 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2020-12-01 15:27:48,779 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2020-12-01 15:27:48,779 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:27:48,780 INFO L262 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-12-01 15:27:48,780 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-12-01 15:27:48,780 INFO L262 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-12-01 15:27:48,780 INFO L262 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-12-01 15:27:48,780 INFO L262 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-12-01 15:27:48,780 INFO L262 CegarLoopResult]: For program point L13-6(line 13) no Hoare annotation was computed. [2020-12-01 15:27:48,781 INFO L265 CegarLoopResult]: At program point L51(lines 22 52) the Hoare annotation is: true [2020-12-01 15:27:48,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:27:48 BoogieIcfgContainer [2020-12-01 15:27:48,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:27:48,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:27:48,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:27:48,813 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:27:48,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:25:31" (3/4) ... [2020-12-01 15:27:48,817 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:27:48,827 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-01 15:27:48,828 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-01 15:27:48,828 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:27:48,829 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:27:48,864 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0c9c2fd7-424c-4b95-b58a-6b7b34bef6e3/bin/uautomizer/witness.graphml [2020-12-01 15:27:48,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:27:48,866 INFO L168 Benchmark]: Toolchain (without parser) took 138568.29 ms. Allocated memory was 98.6 MB in the beginning and 146.8 MB in the end (delta: 48.2 MB). Free memory was 68.1 MB in the beginning and 64.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 50.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:27:48,866 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 60.4 MB in the beginning and 60.4 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:27:48,867 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.53 ms. Allocated memory is still 98.6 MB. Free memory was 67.8 MB in the beginning and 75.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:27:48,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 73.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:27:48,868 INFO L168 Benchmark]: Boogie Preprocessor took 24.61 ms. Allocated memory is still 98.6 MB. Free memory was 73.7 MB in the beginning and 72.7 MB in the end (delta: 953.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:27:48,874 INFO L168 Benchmark]: RCFGBuilder took 474.25 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 59.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:27:48,875 INFO L168 Benchmark]: TraceAbstraction took 137640.56 ms. Allocated memory was 98.6 MB in the beginning and 146.8 MB in the end (delta: 48.2 MB). Free memory was 59.0 MB in the beginning and 67.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:27:48,875 INFO L168 Benchmark]: Witness Printer took 51.73 ms. Allocated memory is still 146.8 MB. Free memory was 67.9 MB in the beginning and 64.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:27:48,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 98.6 MB. Free memory was 60.4 MB in the beginning and 60.4 MB in the end (delta: 38.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.53 ms. Allocated memory is still 98.6 MB. Free memory was 67.8 MB in the beginning and 75.3 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.52 ms. Allocated memory is still 98.6 MB. Free memory was 75.3 MB in the beginning and 73.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.61 ms. Allocated memory is still 98.6 MB. Free memory was 73.7 MB in the beginning and 72.7 MB in the end (delta: 953.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 474.25 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 59.6 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 137640.56 ms. Allocated memory was 98.6 MB in the beginning and 146.8 MB in the end (delta: 48.2 MB). Free memory was 59.0 MB in the beginning and 67.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. * Witness Printer took 51.73 ms. Allocated memory is still 146.8 MB. Free memory was 67.9 MB in the beginning and 64.8 MB in the end (delta: 3.1 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: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: 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: 39]: Loop Invariant Derived loop invariant: (((((((0 <= z && z * x + 1 == x + y) && 1 == cond) && 1 <= k) && z == y) && 1 <= c) && z <= 5) && cond == 1) || ((((((((0 <= z && (x + -1) / z * z + y == z + (x + -1) / z * z * z) && z * x + 1 == x + y) && 1 == cond) && 1 <= k) && (z * ((x + -1) / z) + (x + -1) / z * -1 + 1) % z == 0) && 1 <= c) && z <= 5) && cond == 1) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((0 <= z && x == 1) && 1 <= k) && z == y) && 1 <= c) && z <= 5) && cond == 1) || (((((((((0 <= z && (x + -1) / z * z + y == z + (x + -1) / z * z * z) && (x + -1) % z == 0) && 1 == cond) && (z * ((x + -1) / z) + (x + -1) / z * -1 + 1) % z == 0) && 1 <= k) && !(z == 0)) && 1 <= c) && z <= 5) && cond == 1) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 133.3s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 121.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 94 SDslu, 178 SDs, 0 SdLazy, 196 SolverSat, 36 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 37.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 111 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 92.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=3, 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, 6 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 195 HoareAnnotationTreeSize, 4 FomulaSimplifications, 260 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 434 FormulaSimplificationTreeSizeReductionInter, 4.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 102 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 10710 SizeOfPredicates, 43 NumberOfNonLiveVariables, 440 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 13/27 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...