./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/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 1c7b0bcafcf64cbd4ebc44cac2f19b9f80df1308 ................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:28:21,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:28:21,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:28:21,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:28:21,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:28:21,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:28:21,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:28:21,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:28:21,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:28:21,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:28:21,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:28:21,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:28:21,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:28:21,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:28:21,702 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:28:21,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:28:21,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:28:21,709 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:28:21,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:28:21,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:28:21,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:28:21,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:28:21,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:28:21,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:28:21,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:28:21,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:28:21,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:28:21,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:28:21,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:28:21,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:28:21,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:28:21,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:28:21,747 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:28:21,748 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:28:21,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:28:21,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:28:21,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:28:21,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:28:21,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:28:21,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:28:21,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:28:21,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:28:21,782 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:28:21,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:28:21,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:28:21,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:28:21,784 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:28:21,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:28:21,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:28:21,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:28:21,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:28:21,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:28:21,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:28:21,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:28:21,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:28:21,786 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:28:21,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:28:21,786 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:28:21,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:28:21,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:28:21,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:28:21,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:28:21,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:28:21,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:28:21,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:28:21,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:28:21,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:28:21,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:28:21,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:28:21,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:28:21,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:28:21,789 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_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c7b0bcafcf64cbd4ebc44cac2f19b9f80df1308 [2020-11-30 01:28:22,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:28:22,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:28:22,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:28:22,097 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:28:22,098 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:28:22,099 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2020-11-30 01:28:22,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/data/7d71ae4a1/859f0dc3934049b2bfc700487e5f5c58/FLAG813e1a924 [2020-11-30 01:28:22,612 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:28:22,613 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2020-11-30 01:28:22,619 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/data/7d71ae4a1/859f0dc3934049b2bfc700487e5f5c58/FLAG813e1a924 [2020-11-30 01:28:23,022 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/data/7d71ae4a1/859f0dc3934049b2bfc700487e5f5c58 [2020-11-30 01:28:23,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:28:23,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:28:23,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:23,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:28:23,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:28:23,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df134aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23, skipping insertion in model container [2020-11-30 01:28:23,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:28:23,060 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:28:23,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:23,302 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:28:23,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:28:23,370 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:28:23,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23 WrapperNode [2020-11-30 01:28:23,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:28:23,372 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:28:23,372 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:28:23,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:28:23,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:28:23,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:28:23,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:28:23,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:28:23,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,417 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... [2020-11-30 01:28:23,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:28:23,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:28:23,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:28:23,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:28:23,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:28:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:28:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:28:23,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:28:23,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:28:23,748 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:28:23,748 INFO L298 CfgBuilder]: Removed 21 assume(true) statements. [2020-11-30 01:28:23,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:23 BoogieIcfgContainer [2020-11-30 01:28:23,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:28:23,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:28:23,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:28:23,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:28:23,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:28:23" (1/3) ... [2020-11-30 01:28:23,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a565db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:23, skipping insertion in model container [2020-11-30 01:28:23,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:28:23" (2/3) ... [2020-11-30 01:28:23,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a565db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:28:23, skipping insertion in model container [2020-11-30 01:28:23,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:23" (3/3) ... [2020-11-30 01:28:23,758 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound1.c [2020-11-30 01:28:23,769 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:28:23,773 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:28:23,785 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 01:28:23,808 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:28:23,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:28:23,808 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:28:23,808 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:28:23,808 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:28:23,808 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:28:23,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:28:23,809 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:28:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-30 01:28:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:28:23,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:23,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:23,827 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:23,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:23,833 INFO L82 PathProgramCache]: Analyzing trace with hash -144177098, now seen corresponding path program 1 times [2020-11-30 01:28:23,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:23,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442910032] [2020-11-30 01:28:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:23,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:23,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442910032] [2020-11-30 01:28:23,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:23,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:28:23,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021107637] [2020-11-30 01:28:23,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:28:23,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:23,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:28:23,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:28:23,981 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-11-30 01:28:23,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:23,994 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2020-11-30 01:28:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:28:23,995 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 01:28:23,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:24,003 INFO L225 Difference]: With dead ends: 45 [2020-11-30 01:28:24,003 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 01:28:24,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:28:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 01:28:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-30 01:28:24,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 01:28:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-30 01:28:24,054 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-11-30 01:28:24,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:24,062 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-30 01:28:24,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:28:24,062 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-30 01:28:24,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:28:24,063 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:24,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:24,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:28:24,064 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:24,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:24,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1281167042, now seen corresponding path program 1 times [2020-11-30 01:28:24,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:28:24,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865035129] [2020-11-30 01:28:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:28:24,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:28:24,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1603270907] [2020-11-30 01:28:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:28:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:28:24,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 01:28:24,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:24,325 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:28:24,326 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:24,382 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:28:24,383 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:24,455 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:28:24,455 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:24,631 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:28:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:28:24,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865035129] [2020-11-30 01:28:24,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:28:24,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603270907] [2020-11-30 01:28:24,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:28:24,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-30 01:28:24,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607953392] [2020-11-30 01:28:24,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 01:28:24,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:28:24,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 01:28:24,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:28:24,731 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2020-11-30 01:28:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:25,235 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-30 01:28:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:28:25,236 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-30 01:28:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:25,237 INFO L225 Difference]: With dead ends: 25 [2020-11-30 01:28:25,237 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:28:25,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-11-30 01:28:25,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:28:25,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:28:25,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:28:25,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:28:25,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-11-30 01:28:25,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:25,239 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:28:25,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 01:28:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:28:25,240 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:28:25,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 01:28:25,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:28:25,548 INFO L274 CegarLoopResult]: For program point L35-2(lines 35 46) no Hoare annotation was computed. [2020-11-30 01:28:25,548 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:28:25,548 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:28:25,548 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:28:25,548 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:28:25,548 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 01:28:25,549 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:28:25,549 INFO L270 CegarLoopResult]: At program point L12-1(line 37) the Hoare annotation is: (let ((.cse1 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (< (+ .cse0 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse1))) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (<= ULTIMATE.start_main_~A~0 1) (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ (* 2 ULTIMATE.start_main_~R~0) ULTIMATE.start_main_~A~0)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_main_~v~0 1)))) [2020-11-30 01:28:25,549 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 01:28:25,549 INFO L277 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: true [2020-11-30 01:28:25,549 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-11-30 01:28:25,549 INFO L274 CegarLoopResult]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2020-11-30 01:28:25,550 INFO L274 CegarLoopResult]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2020-11-30 01:28:25,550 INFO L274 CegarLoopResult]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2020-11-30 01:28:25,550 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:28:25,550 INFO L277 CegarLoopResult]: At program point L50(lines 19 51) the Hoare annotation is: true [2020-11-30 01:28:25,550 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:28:25,550 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 01:28:25,550 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-30 01:28:25,551 INFO L274 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-11-30 01:28:25,551 INFO L274 CegarLoopResult]: For program point L9-4(line 9) no Hoare annotation was computed. [2020-11-30 01:28:25,551 INFO L274 CegarLoopResult]: For program point L9-6(line 9) no Hoare annotation was computed. [2020-11-30 01:28:25,551 INFO L274 CegarLoopResult]: For program point L39(lines 39 45) no Hoare annotation was computed. [2020-11-30 01:28:25,551 INFO L270 CegarLoopResult]: At program point L39-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (div (+ (* ULTIMATE.start_main_~u~0 (- 1)) 1) (- 2)))) (let ((.cse0 (* .cse1 .cse1))) (and (< (+ .cse0 1) (+ ULTIMATE.start_main_~A~0 (* 2 .cse1))) (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (<= ULTIMATE.start_main_~A~0 1) (< (+ (* ULTIMATE.start_main_~R~0 ULTIMATE.start_main_~R~0) 1) (+ (* 2 ULTIMATE.start_main_~R~0) ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= .cse0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (= ULTIMATE.start_main_~v~0 1)))) [2020-11-30 01:28:25,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:28:25 BoogieIcfgContainer [2020-11-30 01:28:25,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:28:25,595 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:28:25,595 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:28:25,595 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:28:25,595 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:28:23" (3/4) ... [2020-11-30 01:28:25,598 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:28:25,611 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-30 01:28:25,611 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:28:25,611 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:28:25,611 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:28:25,661 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bfff6dd8-6d44-4084-b18f-d00e28a7cbf6/bin/uautomizer/witness.graphml [2020-11-30 01:28:25,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:28:25,663 INFO L168 Benchmark]: Toolchain (without parser) took 2636.04 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 54.8 MB in the beginning and 84.5 MB in the end (delta: -29.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:25,663 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:25,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.70 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 67.2 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:25,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.42 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 65.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:25,665 INFO L168 Benchmark]: Boogie Preprocessor took 24.20 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:28:25,666 INFO L168 Benchmark]: RCFGBuilder took 319.33 ms. Allocated memory is still 90.2 MB. Free memory was 64.5 MB in the beginning and 51.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:25,666 INFO L168 Benchmark]: TraceAbstraction took 1842.56 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 50.7 MB in the beginning and 86.6 MB in the end (delta: -35.9 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:25,667 INFO L168 Benchmark]: Witness Printer took 66.58 ms. Allocated memory is still 115.3 MB. Free memory was 86.6 MB in the beginning and 84.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:28:25,670 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 90.2 MB. Free memory is still 70.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.70 ms. Allocated memory is still 90.2 MB. Free memory was 54.7 MB in the beginning and 67.2 MB in the end (delta: -12.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.42 ms. Allocated memory is still 90.2 MB. Free memory was 67.2 MB in the beginning and 65.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.20 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 319.33 ms. Allocated memory is still 90.2 MB. Free memory was 64.5 MB in the beginning and 51.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1842.56 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 50.7 MB in the beginning and 86.6 MB in the end (delta: -35.9 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. * Witness Printer took 66.58 ms. Allocated memory is still 115.3 MB. Free memory was 86.6 MB in the beginning and 84.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && A <= 1) && R * R + 1 < 2 * R + A) && cond == 1) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == r + A) && v == 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((u * -1 + 1) / -2 * ((u * -1 + 1) / -2) + 1 < A + 2 * ((u * -1 + 1) / -2) && (u + 1) % -2 == 0) && A <= 1) && R * R + 1 < 2 * R + A) && 1 <= cond) && cond == 1) && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == r + A) && v == 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 29 SDslu, 7 SDs, 0 SdLazy, 39 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 157 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2868 SizeOfPredicates, 13 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...